Friction Drive Telescope Mount

If you’re shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. In the case of the Shane 3-meter, though it is in prinicple possible to observe via internet link from a remote location, observers invariably come to Mount Hamilton to carry. Celestron's newly designed CGX-L Computerized Equatorial Mount is the latest addition to their fully computerized equatorial mount series. Depending on the telescope being used on the mount, there are different assecories available to make the mount complete. Mesu Mount 200 was purchased new by me in October 2017 and has been a solid piece of equipment. We are serving amateur and professional astronomers worldwide. High torque motors with better slewing and tracking ability. The mount has two parts, the rocker box and the ground board. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. By comparison, an equatorial mount is essentially an alt-az mount that is tilted to match your latitude, allowing a telescope to track the stars with the addition of a simple clock drive. We have recently completed a series of measurements of the telescope mount. This took me a few months to build, the brake rotor idea is from ScopeX in South Af. 5 pixels (0. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. Telescope Drive. Experience Celestron's best optical perfomnance with EdgeHD’s flat-field and coma-free optics for pinpoint stars all the way to the edge of today’s largest imaging sensors. The telescope has been fully refurbished, re-aluminised, and the old electromechanical drive mechanisms removed and have been replaced with the most modern encoders and computer operations. After some poking and googling I was able to determine that the mount uses a bipolar stepper motor to compensate for Earth's rotation. Mount is also Ed's fork mount improvement inspiration I will add more "boxing" to my unboxed fork seen at edhiker. astro-imaging. I like doing things in a unconventional manner, so I decided to try building my own telescope mount for astrophotography instead of going out and buying one. ) Our other telescope is a Meade 8 inch Schmidt-Cassegrain. Capable of carrying Celestron's largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging. This is a great telescope to have as you utilize its dual axis Teflon bearings and its altitude tension clutch. A This is a balance problem on the telescope. 1899 Catalog, Astronomical and Terrestrial Telescopes, 6 pages. 1035 Delaware Ave. Fully programmable to match telescope characteristics for retro-fitting. This paper introduces the structure design and. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. The Celestron CGX EQUATORIAL MOUNT AND TRIPOD. The Polar Disk Mount is finally ready for my 6" f/7. This telescope has an f10 focal length in a folded optical path making. This system is renowned for high precision and reliability. The Orion TrueTrack DC drive system provides dual-axis control for high-power viewing and photography with the SkyView Pro mount. Last year I developed a subarcsecond precision reducer for the E. I share the first results, images taken with a 400 mm F8 RC telescope at 0,64"/pixel. Although the tracker would be nice since there is no need to rewind it. An M5 screw (not shown) tightens the clamp around the telescope. 6) Place motor drive into recess. It is based on a system of ball bearings rolling between two surfaces while housed within a rotating bushing. Car Phone Holders and Dashboard Phone Mounts. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. Integra Field Rotator-Microfocuser. A belt drive connects the 55 tooth gear to a 12 tooth gear on the stepper motor. The motion of the platform is reasonably smooth. AstroTrac 360 punches above its weight at just 5 kg (11 lb) in GEM configuration. This mount is a pure engineering solution to a well-established problem - how to accurately locate and track celestial objects. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. The second stage is an internal friction drive. Lie the telescope tube (with an eyepiece and finderscope mounted) on a table. Currently, friction drive with ultra-low speed and high accuracy is widely used in large astronomical telescopes. Instrument shown: 1. 2 Friction lockedjoints 40 6. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. loosening the bolt to free the OTA, 4. Buy more powerful motors which can overcome the friction associated with the weight of the telescope. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. It boasts some key feature distinctions which make it stand out from the crowd. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. A star's visibility depends on aperture: the telescope's light gathering power. CGX Equatorial Mount and Tripod: For eight years, Celestron s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. lazy susan, gear fly wheels, reducer gears, worm gear drives…. $\endgroup$ – Olin Lathrop Apr 19 '16 at 21:46. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. The TNT motor drive system includes adjustable speeds on both axes, high speed centering and one-touch re-positioning of the altitude tangent arm. AWR have advised on motorizing all types of telescopes and mounts with mirrors up to 36 inch diameter. TCF-S Focuser System Components. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. No gears are used. Capturing Planets the Dobsonian Way. 4kg (that's 7. (Sometimes I think it also does duty as some kind of Star Wars laser weapon. A motor drive allows tracking of celestial objects. Celestron CPWI Software interface With any one of three connection methods from your PC to the mount, CPWI's telescope control and Sky Viewer display makes selecting your target easy. It goes without saying that the mount drive control is the key technique which affects the telescope’s resolution and speed mostly. prised more mount manufacturers don't deploy friction drives, but there is a lot of inertia in tradition, and tradition weighs heavily in favor of worm drives. )This is accomplished by a small diameter grooved. Very small guiding correction impulses may remain left unnoticed until the drive train has built up enough torque to cause a sudden „jump“ (an arc second-sized correction overshoot). Mobile high-end telescope mount with unique friction drive SEM SCANNING OPTICAL INSTRUMENTS PROTOTYPES Matrix, features and more details: www. 5 arc seconds. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. friction drive, worm gear, etc. Configurable telescope mount system. fric Precision Friction Drive German Equatorial Mount E. The mount comes with several patented features and a flexible modern control. The motions are reasonably smooth, the mount’s extruded aluminum legs are quite steady with such a lightweight tube. Orion IntelliScope Computerized Object Locator. The coil is also on the floor in a holder set parallel, 2-inches to the left, of the 40" long, 3/4 x 3/4 square, solid aluminum boom and the cow magnet. For information or advice call 020 8763 9953 or email [email protected] As a result, it’s easy to keep the objects that move on the center point of the eyepiece. Springloaded worm assembly for zero backlash: Altitude Drive: Ø120mm bronze worm gear drive. Using a friction drive at the end of a ~26 cm arm (the. (I would have preferred Allen head bolts but they were out of. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. The PETG mount is flexible enough that I can just slide the motor shaft into the knob without separating the motor from the mount. I will supply at no extra cost, a reducing sleeve to fit a smaller shaft diameter, if you wish. But, the have to purchase it separately as it doesn’t come with the unit. The Fork Mount and Base assembly supports the telescope rigidly, and allows the user to point the telescope up or down in altitude or in astronomical terms 'Declination' motion. This system is renowned for high precision and reliability. The DiscMount was designed with Patented Variable Friction Control along with a large friction disc. I expected to use the set screw to secure the motor shaft, but so far it seems that there's just enough friction that the set screw does not need to. Telescope Computer hand controller to add full Go-To functionality. Unleash the power of your smartphone to take you on a guided tour of the night sky with no telescope experience required. 4") diameter 18 mm thick plywood disk with the following add-ons: Three 32 mm track rollers on which the drive board will rotate, positioned exactly above three 76 mm (3") diameter feet. While the first of these two mounts was still equipped with a somewhat idiosyncratic gear motor with belt drive, at second mount, the original Pressberger self-made gearbox unit was used in both axes now. This thesis describes the servo control system which was developed to control the motion of the telescope. The friction of the friction drive can be adjusted. Instrument shown: 1. This is the point in space that the first axis rotates about. 5" matched Byers drive on a friction clutch. Order today from Ontario Telescope and Accessories. Incremental Encoder based friction drive. Capable of carrying Celestron's largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes. Go-Tos generally use friction drives on the altitude and azimuth axes, which can be engaged or disengaged to change between 'go-to' and 'push-to'. But all in all, the mount and the telescope are in quite a good shape. Drive System: The spring loaded anti-backlash mechanism of the worm drive delivers near zero backlash at the telescope. Double your results or double your fun with friends and family. Linear Telescope Equatorial Mount No wear, no frictions! No wearing effects since no relevant frictions occur. face finish is to 600 grit and is mirror like, ready for anodizing. Gilles Gagnon converted an Astro-Physics AP400 mount to OnStep, using the MiniPCB board, and NEMA11 motors. "Choosing Your First Telescope" with J. 5 arc seconds in 5 minutes, +/- 5. This is a great telescope to have as you utilize its dual axis Teflon bearings and its altitude tension clutch. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Evidently the friction drive was sufficient, and reliable. A motor is the mechanical or electrical device that generates the rotational or linear force used to power a machine. As with most newly developed devices, it was expected that there would be some teething problems. In particular the mount control system for the giant telescope. Mesu-Optics sells saddle plates, counter weights, Berlebach tripods, bended knee pillars and polar scopes. The combination of the reflex site and low-friction Dobson mount makes for a very intuitive telescope that the kids greatly enjoy using. 5 arc seconds in 5 minutes and +/- 3 arc seconds in 1 hour. CGX Equatorial Mount and Tripod: For eight years, Celestron s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. Guide to Telescope Mounts. for both axises and (de)coupling mechanism for the two servo motors, it is an improvement on it's predecessor. ject to overtake the telescope. motor, which runs in either direction as desired. QHYCCD - QHY183M Monochrome CMOS Camera with QHYCFW3S-SR-6 Filter Wheel Combo Kit QHYCCD QHY183M Monochrome CMOS Camera The QHY183 is a one-inch, 20 Megapixel back-illuminated COLDMOS color camer. uk or Telephone: 01782 614200. Buy today from FocusCamera. And like HEIDENHAIN, ETEL builds its linear and torque motors, along with motion systems, on a foundation of superior knowledge and technical. Camera Tracker Package - Split the AstroTrac 360 German Equatorial or Single Arm mount and you have two of the best tracking camera mounts on the planet. New Listing iOptron SkyTracker Pro Camera Mount with Polar Scope - (Mount Only) - #3322. Thrust washers between the gear and the holding brackets reduce the lateral friction of the gear. The Celestron CGX-L 925 SCT combines the legendary 9-1/4 inch Schmidt-Cassegrain with Celestron's largest and most capable German equatorial mount. the Shane 3-meter. The mount comes with several patented features and a flexible modern control. 5 GROUNDBASE 44 6. 75" at the upper bearing and 4" at the lower bearing. Our goal with AstroTrac 360 was to do the impossible: engineer a full‑size experience into the smallest, lightest telescope mount possible. With an imaging instrument capacity of 10 kg (22 lb), it easily handles a 100 mm (4-inches) refractor or 200 mm (8-inch) carbon Ritchey Chretien with the camera. It allows you to choose from 3 different speeds as well as a pause mode as well as sidereal tracking for total control. the telescope friction clutch - the plate is on the dec axis and presses a friction pad against a DEC disk mounted on the axle. The mount has been reconfigured into an equatorial, with new bearings and a friction drive on the right ascension axis. 7e-) read n. Capturing Planets the Dobsonian Way. It was priced a bit more than the Edmund 4" but had what appeared to be a better mount. Different type drive systems, such as worm gear drive, spur gear drive, friction drive and direct drive, which were devised and used in telescopes in the past years, have their own inherent. A drive is the electronic device that harnesses and controls the electrical. Telescope mount features dual slow-motion controls and 360-degree azimuth adjustment, for easy manual tracking of celestial objects for extensive viewing Adjustable-height tripod (32. Celestron's newly designed CGX-L Computerized Equatorial mount is the largest and most capable of their computerized equatorial mount series. However friction drive has its own. It features precision roller bearings, Crayford no backlash friction drive and has smooth focusing at high power with 8:1 fine focus. A belt driven motor minimizes backlash but remains smooth even when handling a large telescope. I would assume that they required goodly torque, but obviously don't have numbers. The telescope's friction drive system allows backlash-free control of its altitude-over-azimuth mount. GARMIN Portable Friction Mount from Currys PC World. The lens is attached to a black PVC toilet mount flange with a plumbing squeeze clamp exactly for that purpose; miraculously, the enlarger lens was just a little smaller than. Also, it allows you to add a motor drive that will help you to track the objects routinely. The best model of this buying guide is the Celestron NexStar 1100 HD Deluxe. With top astro-photography qualified mounts, "goodness" is closely related to cost. Attach the Orion EQ-3M Dual-Axis Electronic Telescope Drive to a compatible Orion or Celestron equatorial mount and you can track celestial objects automatically, without needing to touch. Arduino, GPS module and an SD card with an Ephemeris; aim it at two or three bright stars to calibrate. AstroTrac 360 punches above its weight at just 5 kg (11 lb) in GEM configuration. We captured three images with the highest dynamic range, unit gain, and lowest read noise settings. Incremental Encoder based friction drive. This stems from trying to set up my 10" Meade LX200 for astrophotography. Remember you can program and design different drive rates. (I would have preferred Allen head bolts but they were out of. Helpful Resources: Unboxing Video (Backyard Astronomy on YouTube) Celestron CGX-L Equatorial Mount and Tripod – Product Video from Celestron; In March 2019, I took the Celestron CGX-L for a test drive on the Leo Triplet (Click for video). Because of this enormous pressure, it is normal for a "track" to become apparent on the surface of the drawtube with use. Depending how configured, a friction drive can be more efficient than a hub. The telescope mount is an equatorial fork with friction roller drives. This scope is The DEC gear is a 1950s vintage Edmund sideral drive gear set that I cludged a mount for. 1000 to end of part 1910) Revised as of July 1, 2013 Containing a codification of documents of general applicability and future effect As of July 1, 2013. Heavy Duty belt-drive system minimizes backlash while providing smooth motor operation under heavy loads. The Bresser Messier 10" Dobsonian Telescope builds on the success of the smaller 8" model to deliver a telescope with nearly double the light gathering power. The Dobsonian mount usually relies on the friction between the side bearings on the optical tube of the telescope and a frictional material on the saddle to hold the optical tube in place. Capable of carrying a 75 pound instrument load, it will. has some flex along RA. In this paper, the principle and characteristics of friction drive is analyzed. Power input and accessory ports remain stationary while the mount slews to avoid. Although this system worked very well, there were calls for full robotic control worm gears, the Mesu-Mount 200 uses a friction drive - a small driven roller driving a reduction disc, which in turn drives the main disc and results in a 2000:1 reduction. Horry County police say they seized more than $62,000 in cash and 600 grams of heroin in a Myrtle Beach drug bust that landed 5 people in jail. i made some. Without the right telescope mounts, it's difficult to get the best performance from even the best-rated telescopes. Internal cabling for worry-free remote operation. The Celestron CGX-L Telescope Mount is Available at High Point Scientific. The L-600 is ideal for the CDK24 and can hold up to 300 lbs. Solutions range from high-end motion systems with nanometer precision to industrial applications requiring high torque. Linear Telescope Equatorial Mount No wear, no frictions! No wearing effects since no relevant frictions occur. Offered in Alt-Az or Equatorial configuration. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use. (it is only a matter of time before this statement is pointed out as false too, so I'll anticipate that…. 2 Friction lockedjoints 40 6. The Celestron EdgeHD is an aplanatic flat-field Schmidt optical system designed to produce aberration-free images with pinpoint stars all the way to the edge of the field of view of today’s largest imaging sensors and wide field eyepieces. I expected to use the set screw to secure the motor shaft, but so far it seems that there's just enough friction that the set screw does not need to. Making a GEM telescope mount suitable for GOTO and astrophotography and near-unattended operation is extremely daunting. However, the scope's Dec drive gear is a Mathis drive, with its worm mounted in bronze bushings, which I believe will provide more accurate, concentric operation and. Exceptional load capacity to weight ratio Additional Aux accessory ports and autoguider port on the Dec axis for better cable management Larger. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. The new AstroTrac 360's advanced friction drives and optical encoders delivers best unguided tracking performance!. This well-proven azimuth drive was the start point for a fully automated imaging observatory. Full text of "MSFC Skylab Apollo Telescope Mount" See other formats. Now let's look at the DiscMount. fric Precision Friction Drive German Equatorial Mount E. Offered in Alt-Az or Equatorial configuration. Orion IntelliScope Computerized Object Locator. Internal cabling for worry-free remote operation. This is a NEW BYERS 11-1/8" diameter -- 442-tooth Telescope Drive, With Spring-Loaded Slip-Clutch, Bored To Fit A 3. and SCIENTIFIC AMERICAN 187 TINSLEY LABORATORIES Supplies for the Amateur Telescope Maker. 45 arcsec/step (micro stepping) Both telescope axes must include a friction clutch for manual positioning; Isolate the drive mechanics from the GEM with a Sorbothane vibration dampening material. The scope can be driven using one of several different methods. And like HEIDENHAIN, ETEL builds its linear and torque motors, along with motion systems, on a foundation of superior knowledge and technical. During this time I have learned a great deal about the genius of the Clarks, in particular George Basset Clark, whom I believe is responsible for the design of our 8¼-inch telescope’s mount and drive systems. More info here. This system is renowned for high precision and reliability. Need to learn to not call things so tight. I made do with the materials and tools I have, and I'm happy it works! EDIT: It's a bit odd to drive the rotor from the top bearing, but based on my calculations, that force exerted on the drive bearing by the weight of the assembly is about the same as if I had used on of the bottom edge. Hopkins in Arizona. This spectacular telescope makeover can turn your mediocre-performing telescope into a performance giant with minimum backlash, firm clamping capability, precision tracking and GO TO drive performance, total de-greasing and backlash adjustment and careful protective wire routing. With an optical tube assembly weighing only 28 lbs. The Shane's primary is a 3-meter Pyrex disk with a honeycomb backside designed for lightness and rigidity. Due to the greater power of this motor, the friction drive loses control. When using a TDM (Telescope Drive Master), this can be reduced to below +/-0. There's zero backlash due to the friction drive. And like HEIDENHAIN, ETEL builds its linear and torque motors, along with motion systems, on a foundation of superior knowledge and technical. 5 meters, and a slit 1. Telescope mount features dual slow-motion controls and 360-degree azimuth adjustment, for easy manual tracking of celestial objects for extensive viewing. Springloaded worm assembly for zero backlash: Altitude Drive: Ø120mm bronze worm gear drive. It’s available in two variations:. With an optical tube assembly weighing only 28 lbs. Celestron CPWI Software interface With any one of three connection methods from your PC to the mount, CPWI's telescope control and Sky Viewer display makes selecting your target easy. Different type drive systems, such as worm gear drive, spur gear drive, friction drive and direct drive, which were devised and used in telescopes in the past years, have their own inherent. With a timing belt drive you reduce the backlash. It features the largest aperture in the Inspire family line, and its short tube offers a wider field of view perfectly suited for larger, fainter deep sky objects. Note the other dovetail just below the center of the fork (above main picture) for easily separating (dismantling) the entire solid-block polished titanium fork assembly from the lower RA mount assembly. " These are not words one hears applied to a goto smooth-tracking EQ mount. This model has an exceptionally large image circle of 80mm diameter. diameter friction drive in RA and 42 in. Our mount started as a replica of Gregorz Pojmański's instrument for all‐sky monitoring (Pojmański 1997), who kindly shared his plans with our group. The precise balance of the telescope lets you freeze the location, or adjust it with a slight nudge. We are serving amateur and professional astronomers worldwide. Mount Lemmon Sky Center update I have had a hard time posting this month, due to being incredibly busy as well as being limited in my observing time. 48 inch pinion driving 35. Spring engaged, air released servo motor brakes mount to the shaft end of servo motors up to 20 horsepower. Double your results or double your fun with friends and family. But all in all, the mount and the telescope are in quite a good shape. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. has some flex along RA. fric Friction Drive Equatorial Mount based on our unique Friction Drive (without gears) is ideal for astrophotographers working in the field or from an observatory, remote or local. The friction drive is protected by safety clutches on both axis. When I get around to it, I will replace it with a gear drive. , this telescope is still portable enough to be taken to dark skies, and has 89% more light gathering power than an 8" telescope and 40% more than the 9. drives for eliminating the backlash. This motor moves the telescope at the same speed as the terrestrial objects moving in the sky. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Arduino stepper motor controller for a telescope mount. Camera Tracker Package - Split the AstroTrac 360 German Equatorial or Single Arm mount and you have two of the best tracking camera mounts on the planet. We must realise that in astrophotography is usually lumped into the coordinate correction category. 857 inches in diameter (D) is assumed. If you needed 15 W at 10 m/s, then you'll need 1. When using a TDM (Telescope Drive Master), this can be reduced to below +/-0. This German Equatorial mount tracks the stars with the highest precision in its category. Furthermore, the whole setup is pretty light at about 14 pounds. The detection of a contemporaneous optical flash from GRB 990123 prompted a thorough reevaluation of our ROTSE‐II development program. telescopes and to have very Where the telescope pivots is the smooth motion in both axes. I made do with the materials and tools I have, and I'm happy it works! EDIT: It's a bit odd to drive the rotor from the top bearing, but based on my calculations, that force exerted on the drive bearing by the weight of the assembly is about the same as if I had used on of the bottom edge. loosening the bolt to free the OTA, 4. Internal cabling for worry-free remote operation. This stems from trying to set up my 10" Meade LX200 for astrophotography. ball-bearing horizontal adjustment, allowing easy pointing at and tracking of objects. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. ) Additionally, there are two different types of connectors (for LX200 and SBIG standards) to connect TDM to the telescope driver. The concept for Chinese Future Giant Telescope (CFGT) with 30-m aperture has been around for several years, although the requirements for control system are still far from completed and conclusive at this stage. diameter friction drive in DEC contribute to the stiffness that helps promote smooth tracking and excellent accuracy. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. LARGE TELESCOPES are defined as 14 inch diameter mirrors and upwards and could be on FORK, GERMAN , ENGLISH or other Equatorial mounts with worm, friction or chain drives. 5 pixels (0. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium. 2 YOKE BASE 31 6. The Mesu-Mount 200 MKII is the improved version of the original Mesu 200. astro-imaging. The driven gear train is a speed increasing gear train in which a low fric— t ion is desirable for the prevention of stick—slip. From the Factory the friction drive is adjusted fairly tight meaning the mount can only be turned by the internal motors. Telescope gears and Parts Straight knurled knobs for friction drive. • 20" Cassegrain telescope in Kepler observatory Linz (friction wheel drive, largely identical with our own telescope, build 1998-2000) • Mount for 20" Newtonian, built by Michael Mross, Lüneburg Germany (friction wheel drive) • 20" Cassegrain telescope by Erich Kowald, private observatory Posiberg in Styria (friction wheel drive,. 25” SCT Goto Telescope (12070-CELESTRON) is the telescope you want to own. Capturing pin sharp stars at 200 mm or more focal length has never been. (it is only a matter of time before this statement is pointed out as false too, so I'll anticipate that…. Friction will be reduced to about one-third of the original friction. The equatorial mount GM 4000 HPS is the ideal mount for our 18 inch to 24 inch RC telescopes and Newton astrographs. TELESCOPE MOUNT DESIGN 27 6. " These are not words one hears applied to a goto smooth-tracking EQ mount. It works fine, except that the azimuth friction drive has some "dead" spots where it will slew over then stop and just spin the motor without actually slewing the mount. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. The OGEM (Open German Equatorial Mount) is a servo powered (kinematic) friction drive mount. The altitude bearing. the mount which is caused by inaccuracy of of worm. Please specify your requested options in your payment for the deposit. Thrust washers between the gear and the holding brackets reduce the lateral friction of the gear. fric offers the utmost precision available from a pure friction drive without the need for expensive and vulnerable encoders and electronics. lazy susan, gear fly wheels, reducer gears, worm gear drives…. At the heart of the LighTrack is the precision motor and the friction drive. What do you think about these results with the friction drive ? My PHD calibration seems very strange : AD rate = 4. the Shane 3-meter. Celestron RASA 11″ telescope and CGX mount package; Rowe-Ackermann 11-inch f/2. As with most newly developed devices, it was expected that there would be some teething problems. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. 25” SCT Goto Telescope (12070-CELESTRON) is the telescope you want to own. Telescope gears and Parts Straight knurled knobs for friction drive. The rubber friction face provides. TCF-S Focuser System Components. Mount Lemmon Sky Center update I have had a hard time posting this month, due to being incredibly busy as well as being limited in my observing time. Fully programmable to match telescope characteristics for retro-fitting. Celestron's newly designed CGX-L Computerized Equatorial mount is the largest and most capable of their computerized equatorial mount series. fric Precision Friction Drive German Equatorial Mount E. Since the construction consists of optimised RK standard products, the monitor mounting, including all installation options, is economical and available in no time. We are serving amateur and professional astronomers worldwide. This German Equatorial mount tracks the stars with the highest precision in its category. Our own version of the popular maual mount system for large tubes - ideal for deep sky observation Contact our Sales Team by Email: [email protected] The mount reaches a satellite tracking and positioning speed of 10 deg/sec. Offers compatibility with telescopes that have RS-232 serial interfaces, as well as with more recent Meade USB-only telescopes. System performance matched to mount and motors selected. More info here. This took me a few months to build, the brake rotor idea is from ScopeX in South Af. The pillow blocks hold skate board bearings. It has a 220LB payload capacity and yet weights only about 50 lbs. It includes an AC powered synchronous clock drive motor and declination clamp. 5 homemade telescope. RCOS also developed an Elevation over Azimuth tracking mount for Space Debris and LEO tracking. This system is renowned for high precision and reliability. 7e-) read n. The OGEM telescope mount, 100 kg payload friction drive for under 4000 euros. When using a TDM (Telescope Drive Master), this can be reduced to below +/-0. Both of these terms refer to the tripod your telescope sits on. Ultra-Light Conversions. Two pins prevent rotation of the friction pad. Celestron CGX-L 9. Move the tube to the edge so that an approximate location of the centre of gravity is found. The telescope's friction drive system allows backlash-free control of its altitude-over-azimuth mount. 25x was the minimum correction speed in v1 model. telescopes and to have very Where the telescope pivots is the smooth motion in both axes. The drive system should slew at 80-90 deg. TELESCOPE MOUNT: • 30 in. These characteristics and many others combined with G53F's low weight make the G53F Friction Drive German Equatorial Mount an ideal astrophotography mount in the field or in the observatory. Our own version of the popular maual mount system for large tubes - ideal for deep sky observation Contact our Sales Team by Email: [email protected] 4 out of 5 stars, based on 5 reviews 5 ratings Current Price $28. The only other coverage of a friction-drive mount I recall in ATT was Oliver Penrice's report on the Mesu Mount 200 in Volume 6, Issue 3 (2012), Issue 3,. It has a 220LB payload capacity and yet weights only about 50 lbs. Stay tuned with Gemini Telescope Design. This sensor has very high QE, and very low (0. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. The focuser is driven by the friction that results when a great amount of pressure is applied by the drive shaft against the drawtube, which in turn is pressed against the drawtube post bearings. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. 52 mm usable field for larger format sensors. Up to 2" OD, 2" length, name the custom bore. Lightbridge (or any dobsonian rockerbox) upgrades: Click here for info. atop its tabletop tripod, 2. If the D2M Motor Drive Set is installed, and installation is simple, the included DD2 hand controller is normally used to slew the mount and aim the telescope. of 2012 by a team from OMI, and McDonald Austin/West Texas including the OS and PP staff, and Gordon Wesley from Austin. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Equipped with EQ or equatorial mount, it allows you to control the show motions. Sooner or later an upgrade was going to happen. ProClip USA Inc, is the exclusive North American distributor of ProClip vehicle-specific mounts for dashboards and headrests, and device-specific holders, cradles and docks for mobile devices, such as smartphones, tablets, GPS navigation systems, satellite radios, handheld mobile computers, barcode scanners and two-way radios. Product Title Celestron Telescope Astrophotography T-Adapter - 1-1 Average rating: 4. frictionless. GARMIN Portable Friction Mount. So we decided to rebuild the two friction wheels (RA and DEC axes) completely and scrap the old ones. Perhaps with different optics, the unit might become acceptable. The only other coverage of a friction-drive mount I recall in ATT was Oliver Penrice's report on the Mesu Mount 200 in Volume 6, Issue 3 (2012), Issue 3,. Altazimuth mount: An equatorial telescope mount with clock drive was left out of the design. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. This allows the mount to be adjusted to accommodate large changes in eyepiece (or camera) weights. The mount reaches a satellite tracking and positioning speed of 10 deg/sec. Normally it's: "Big. All that is needed is to adjust the mount to accommodate for the telescope configuration, and forget it. As such, it is desirable to provide a telescope system which readily accommodates upgrading of the telescope mount from friction lock mounts to manual worm drives and from manual worm drives to motorized worm drives in a manner which is simple, convenient, and comparatively inexpensive. Please specify your requested options in your payment for the deposit. The DiscMount was designed with Patented Variable Friction Control along with a large friction disc. the Shane 3-meter. Mount your Garmin sat nav in your car with the Garmin Portable Friction Mount. DEC rate = 3. More info here. The mount and the wedge are there to assist you with a superior viewing session and to keep your expensive telescope safe from a fall. However friction drive has its own deficiencies, such as slippage and creepage. A 10” telescope offers an upgrade from an 8” of nearly 50% extra light gathering power, meaning brighter images, better resolution and greater colour saturation. My first logbook entry mentioning the reconstruction of the Drive was back in 2003, over six years ago. The altitude and azimuth axes are supported and located by hydrostatic bearings. The top is 24 inches square. The Celestron CGX-L 925 SCT combines the legendary 9-1/4 inch Schmidt-Cassegrain with Celestron's largest and most capable German equatorial mount. Even at high magnifications, you can move the rockerbox mount around quickly and easily to point at any target in the night sky!. Climbing Everest? - just take the one. The drive system should slew at 80-90 deg. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. This component, more than any other, determines a telescope's characteristics; the primary's diameter often giving the telescope it's name, e. MOFOD Friction Drive Fork Mount. It is based on a system of ball bearings rolling between two surfaces while housed within a rotating bushing. This brake is a high-torque, zero backlash device. These characteristics and many others combined with G53F's low weight make the G53F Friction Drive German Equatorial Mount an ideal astrophotography mount in the field or in the observatory. CGX Equatorial Mount and Tripod: For eight years, Celestron s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. But all in all, the mount and the telescope are in quite a good shape. Motor assembly. It bounces, or reflects, the light off the mirror. , this telescope is still portable enough to be taken to dark skies, and has 89% more light gathering power than an 8" telescope and 40% more than the 9. Mirror cells, upper cage assemblies etc. 1 YOKE DESIGN 29 6. ball-bearing horizontal adjustment, allowing easy pointing at and tracking of objects. It’s available in two variations:. 5 inch Newtonian telescope. Perfect for viewing the night sky, you won't believe the depth and clarity you will see. A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. In this paper, the principle and characteristics of friction drive is analyzed. Arduino stepper motor controller for a telescope mount. Power input and accessory ports remain stationary while the mount slews to avoid snags. All you have to do is attach your camera to the Orion EQ-1 Equatorial mount and tripod with the included 1/4"-20 threaded adapter, then align the. Gemini Telescope Design G53F friction drive german equatorial mount This German Equatorial mount tracks the stars with the highest precision in its category. Most astronomical telescopes use eyepieces with a 1 1/4" barrel diameter, although many amateur observers with larger telescopes designed for viewing dim galaxies at relatively low magnification now use eyepieces with a 2" barrel diameter. The single axis drive unit is known as a clock drive. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. It has a 220LB payload capacity and yet weights only about 50 lbs. One of the weakest points of many new telescopes is not the lens or mirror, but the mount. The Elevation drive ratio is about 30: 1, while the Azimuth drive ratio is about 35:1. This robust field mount was engineered and designed for SCT's, refractors, and Newtonians alike. This Celestron PWI (CPWI) Telescope Control Software unleashes the full pointing accuracy of your Celestron computerised German EQ or alt-az telescope. AstroTrac 360 Single Arm Mount Package. 5 arcsec/seconde. Tracking corrects for rotation of the earth by rotating the telescope at about the speed of an hour hand on a clock. First to use thin etched virgin teflon. LARGE TELESCOPES are defined as 14 inch diameter mirrors and upwards and could be on FORK, GERMAN , ENGLISH or other Equatorial mounts with worm, friction or chain drives. An alt-az mount moves in altitude (up and down) on a horizontal axis and in azimuth (left and right) on a vertical axis like a gun turret on a tank. 5 inch wheel: Finder upgrade: Provide alternate images to CCD from finder: Internal finder with switchable optical path being designed around filter slide: Drive: 1 rpm synchronous motor to 60:1 speed reducer: Shaft directly coupled to drive pinion. The drive system should slew at 80-90 deg. Can be upgraded to absolute encoders & lifetime warranty on the drive. My first logbook entry mentioning the reconstruction of the Drive was back in 2003, over six years ago. of 2012 by a team from OMI, and McDonald Austin/West Texas including the OS and PP staff, and Gordon Wesley from Austin. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. The friction of the friction drive can be adjusted. Telescope structure and kinematics 413 Major Characterisitcs: • M1 – M2 de-space 120 m • Primary mirror diameter 100 m • Rotating mass 16800 tons. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. With other Dobson the tube is attached or placed on the Rockerbox. The altitude and azimuth axes are supported and located by hydrostatic bearings. The following pictures give an impression of this second telescope:. The English mount or yoke mount addresses a problem with the fork mount: the fork itself still experiences an unbalanced load from the telescope, which means the base of the fork must be of heavy construction. This sensor has very high QE, and very low (0. The telescope impacts visual detection differently depending on the type of object. This fork arm also contains a 7. In star trackers the system to track at sidereal rate usually employs a worm drive on a circular gear ring to rotate the mount head at sidereal rate. The drive system should slew at 80-90 deg. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. In addition, once you find your object, it automatically keeps it in the eyepiece by moving the telescope with a motor. 24 arcsec/seconde instead off 7. A direct drive mechanism is one that uses the torque coming from a motor without any reductions (such as a gearbox). High torque motors with better slewing and tracking ability. Sometimes I worked intensely on the DIY telescope mount project, and sometimes the project laid untouched for months and months. An altazimuth telescope's drive rates vary continuously, When driving the mount the motors prefer it if in today's epoch coordinates. Due to the greater power of this motor, the friction drive loses control. Solutions range from high-end motion systems with nanometer precision to industrial applications requiring high torque. Friction drives are rare. Direct drive telescope mounts are not a new idea, and are commonly found on professional observatory telescopes and very expensive high-end telescope mounts. From the Factory the friction drive is adjusted fairly tight meaning the mount can only be turned by the internal motors. The entire drive mechanism is otherwise my design. 2 Friction lockedjoints 40 6. MMT = multiple mirror telescope. The brake acts as an adapter between dissimilar mounting features. Very impressive! EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. 75" at the upper bearing and 4" at the lower bearing. We must realise that in astrophotography is usually lumped into the coordinate correction category. 2 DRIVE REQUIREMENTS 23 5. i found it on there website. The friction drive is protected by safety clutches on both axis. The worm turns in lapped oilite. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. Climbing Everest? - just take the one. Note the other dovetail just below the center of the fork (above main picture) for easily separating (dismantling) the entire solid-block polished titanium fork assembly from the lower RA mount assembly. Getting ready for the solar eclipse in my own backyard! I wanted a sidereal tracking mount for my camera that is fitted out with a homemade solar filter using Baader solar film Baader Planetarium AstroSolar Safety Film Visual, 7. And visually, with a 1/2 degree eyepiece I can slew over 50 degrees and find a star in. googlepages. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. The Event Horizon Focuser (EV) is a low-profile, friction-drive focuser designed for both the amateur and professional market. Lots of help for converting a fork mount. Using a friction drive at the end of a ~26 cm arm (the. 48 inch pinion driving 35. It bounces, or reflects, the light off the mirror. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Friction drive and super tracking accuracy. 5 arrested in Myrtle Beach drug bust. The Dobsonian mount usually relies on the friction between the side bearings on the optical tube of the telescope and a frictional material on the saddle to hold the optical tube in place. Making a GEM telescope mount suitable for GOTO and astrophotography and near-unattended operation is extremely daunting. 5" RA and declination drive, matching worm and the Losmandy Gemini-1 System. Like the finest focusers that employ similar drive technology, the Half Hitch’s motion controls are instantly responsive, free of backlash, and dead-on precise. Solutions range from high-end motion systems with nanometer precision to industrial applications requiring high torque. The gear is held in place by a piece of 90° aluminum on each side of the gear. Setting Ideas Into Motion Since 1950, design engineers have depended on SDP/SI for high-quality components, subassemblies, and engineering expertise. But it is quite easy to star hop with the 9'x12' fov of the ccd camera. So, for a telescope, the mount and its control system play an important role during the telescope operation. The drive system should slew at 80-90 deg. The pillow blocks hold skate board bearings. The Celestron CGX-L Computerized Equatorial Mount is the extra heavy-duty version of the innovative, accurate, and stable CGX! The CGX-L has been designed with an even better load capacity to weight ratio, and is capable of handling an OTA and other astronomical equipment weighing a total of 75 pounds. HEIDENHAIN offers the largest direct drive motor range on the market via ETEL. more of a sensation of riding an electric bike. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. A direct-drive system is composed of a threaded rod pressed against the rim of a large drive circle. It allows you to choose from 3 different speeds as well as a pause mode as well as sidereal tracking for total control. Celestron CGX-L 1400 combines Celestron's largest and most advanced optics and mount together in an observatory class telescope system. Guide to Telescope Mounts. Type: Polarizing. This mount is a pure engineering solution to a well-established problem - how to accurately locate and track celestial objects. Telescope structure and kinematics 413 Major Characterisitcs: • M1 – M2 de-space 120 m • Primary mirror diameter 100 m • Rotating mass 16800 tons. Consequently, a drive in the telescope has alternately both functions. face finish is to 600 grit and is mirror like, ready for anodizing. Not directly but to drive a generator that would supply electrical power to the mount (sorry about that but I need to make sure that all pages on this site have some astronomical reference ;} Perhaps a "SteamPunk" telescope application???. astro-imaging. This tracking camera mount looks and acts differently than all of the other star trackers I have previously reviewed, including the wildly popular models from iOptron. The existing solutions in the field of trajectory measurement telescopes installed on a deck of the ship require a gyrostabilized platform. This system is renowned for high precision and reliability. Instead of one equatorial axis drive motor, mount two motors so the sphere can be moved in both azimuthal and declination. HEIDENHAIN offers the largest direct drive motor range on the market via ETEL. The Celestron CGX-L 925 SCT combines the legendary 9-1/4 inch Schmidt-Cassegrain with Celestron's largest and most capable German equatorial mount. It can be decomposed into two components dry friction and viscous - friction. The OGEM telescope mount, 100 kg payload friction drive for under 4000 euros. Mechanical Aspects of the Drive. DIY mounts for astronomy. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. We must realise that in astrophotography is usually lumped into the coordinate correction category. Linear Telescope Equatorial Mount No wear, no frictions! No wearing effects since no relevant frictions occur. If I choose the other way with timing belt I have seen a kit cost about 190 Euro, is this old mount worth it?. To drive the mount we choose friction drives for their very low PE and rock solid operation. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. Two other hand screws control the friction. An amateur astronomer in Korea made a harmonic drive telescope using machined aluminum. A drive is the electronic device that harnesses and controls the electrical. 50 deposit at the order time, rest, including options and shipping will be paid before the delivery (~30 days after the deposit) via a Paypal invoice. 2 optical design; Rare-earth glass for images free of false color, coma, and field curvature; 43. Ending Feb 23 at 12:36PM PST. TELESCOPE MOUNT DESIGN 27 6. The brake acts as an adapter between dissimilar mounting features. This robust field mount was engineered and designed for SCT's, refractors, and Newtonians alike. The Omegon Dobsonian telescope gives you clear views of planets, nebulae and galaxies. It's styled like a traditional Leica M rangefinder and brings a host of updates to the hugely popular original Leica Q (Typ 116) that was launched in 2015. mount is brushed cast aluminum, aircraft polyurethane painted, with friction drive alt-azimuth controls. The first stage is a worm gear with a backlash free spring loaded worm assembly. CGX Equatorial Mount and Tripod: For eight years, Celestron s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. Yugioh Led6-en011. First no tools assembly, no tools primary collimation. If you're shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. All azimuth drive systems require a motor drive using either a friction drive or a cog drive of some kind, a control box, a position sensor (encoder), a home sensor and control software. A previous test of my scope indicated something around 5Nm would be required. DEC rate = 3. The new AstroTrac 360's advanced friction drives and optical encoders deliver even better-unguided tracking performance than the AstroTrac TT320X-AG. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. The mount accepts both Vixen (narrow style) and Losmandy (wide style) dovetails, an improvement over the CGEM, which allows you to use any telescope that has a standard mounting system with the CGX, provided you can balance the mount with enough counterweights and keep the weight on the mount under around 25 kilograms. Avalon Instruments: The M-uno Fast Reverse telescope mount is a portable single arm fork mount devoted to deepsky imaging in the capacity range up to 20 kg (44 lb). To fit an OTA, tube rings and blocks are required to suit your OTA size. Offers compatibility with telescopes that have RS-232 serial interfaces, as well as with more recent Meade USB-only telescopes. 1 YOKE DESIGN 29 6. Allen wrenches are stowed beneath the rubber mount base, for adjusting the stiffeness of the altitude and azimuth axes. fric Friction Drive Mount is based on the following important concepts. fric Friction Drive Mount. These are coupled by friction to large diameter drive disks on each axis. Celestron CGX-L Equatorial Mounted 1100 Schmidt-Cassegrain Telescope 11" Schmidt-Cassegrain Optical Tube Assembly Aluminum Optical Tube Celestron's premium StarBright XLT coatings 2800 mm focal length (f/10) 40mm eyepiece included (70x) Visual back allows use with 1. 6 DRIVE ASSEMBLY 46. Mount includes: Rocker box, all PTFE bearing surfaces, polymer non scratch screw on feet, declination CNC machined bearing rings. Solutions range from high-end motion systems with nanometer precision to industrial applications requiring high torque. In particular the mount control system for the giant telescope. Here is a view of the platform without the telescope sitting on it. Before you attach the optical tube, make sure that the declination and right ascension clutch knobs are tight. This system is renowned for high precision and reliability. Fully programmable to match telescope characteristics for retro-fitting. The telescope mount configurations have what is called an "Instrumental Pole". To enable the telescope to be slewed by hand, a wing-nut inside the driven roller-skate wheel provides friction control. friction drive. This German Equatorial mount tracks the stars with the highest precision in its category. Making a GEM telescope mount suitable for GOTO and astrophotography and near-unattended operation is extremely daunting. I have two options in mind, one is a tracker system based on the Ioptron Skytracker and the other is a friction drive system based on the Fornax10 light mount ii. for both axises and (de)coupling mechanism for the two servo motors, it is an improvement on it's predecessor. The Mesu-Mount 300 is a scaled up development of the Mesu-Mount 200 with 300mm friction wheels and an advanced version of the driving mechanism used in the Mesu-Mount 200. This is the point in space that the first axis rotates about. In fact we use multiple types of drive systems i. $\endgroup$ – Olin Lathrop Apr 19 '16 at 21:46. Most telescope mount uses a set of spur gears to reduce motor speed and then a worm wheel for the final reduction. More info here. ) When using auto guiding, the mount reacts immediately, so corrections are very fast and completely free of play. Equipped with EQ or equatorial mount, it allows you to control the show motions. Capable of carrying Celestron's largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes. An amateur astronomer in Korea made a harmonic drive telescope using machined aluminum. I picked up an old DS2000 mount for next to nothing.