(3mm); this gives just as good control as any 2-speed focuser. By PhotoGav, May 28, 2017 in Discussions - Scopes / Whole setups. Focuser Utility software for Windows provides a simple user interface. It is also cheaper than adding a Crayford focuser. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Pegasus SCT Focuser upgrade. DUAL SPEED FOCUSER: For a clear and detailed view, this Celestron telescope focuser has a dual-speed focusing mechanism that offers a 10:1 reduction ratio. It fits into the focus shaft of the telescope for smooth control and fine focusing. Calibrate the focuser position. I show you how to install a. The bigger issue for me is the space it takes up leaves little room for other equipment in the optical chain because of fork clearance 1 x 13 mm bore size of Pulley GT2 (6",8",9.25") or 22mm bore size of Pulley GT2 (11" ,14" Celestron) 4 x M3x6mm length screws (to attach the enclosure on the bracket) 3 x metric screws and 3 x plastic . This focuser will ensure enhanced optical . Share. 1 x Motor Focus Kit Zero. I have now also made a video of how to calibrate it and also how to measure the backlash of the rack and pinion gear of the focuser. $24 95. After you release the arrow button, compensation winds the motor back the other direction to reengage the gears and resume tracking. Get rid of backlash when adjusting the angle or direction! Focuser Utility software for Windows provides a simple user interface. Count how many clicks of the fine focus adjust button it took before the physical focus knob . Focuser Utility software for Windows provides a simple user interface. The Focuser has a number of features that make it well suited to an SCT. DUAL SPEED FOCUSER: For a clear and detailed view, this Celestron telescope focuser has a dual-speed focusing mechanism that offers a 10:1 reduction ratio. $24 95. A more serious drawback for SCT focusers, however, especially for astrophotographers, is image shift. This high resolution geared box has a 0,06 degree step size can can easily lift more than 6 Kg (per cm). Operation Connecting Also compatible with Celestron PWI. . The Celestron Focus Motor for SCT and EdgeHD enables electronic focusing using a computer or Celestron computerized mount hand controller for remote/hands-free observing. Also compatible with Celestron PWI. Stephen suggested the method of hyperbola fit for finding the exact focus point by exploring a range of data points and made the "prove of concept" tests. Focuser Utility software for Windows provides a simple user interface. Focuser Utility software for Windows provides a simple user interface. Buy Celestron Focus Motor v2 for SCT and EdgeHD OTAs featuring Precise Focusing with Zero Backlash, Servo Motor with Microprocessor, Low, Medium, High Focus Speeds, Use with Mount's Hand Controller, External PC Control via USB Cable, ASCOM Compatible. Try turning the focus knob all the way it can go in one direction then the other. Check description for full list. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Also compatible . This method is not limited to a starlight feather touch focuser but could be performed on all kinds of focuser. 3 years 9 months ago #27941. . Buy Celestron Focus Motor v2 for SCT and EdgeHD OTAs featuring Precise Focusing with Zero Backlash, Servo Motor with Microprocessor, Low, Medium, High Focus Speeds, Use with Mount's Hand Controller, External PC Control via USB Cable, ASCOM Compatible. Motorized Focuser Accessory: 7.16.9300: . I am trying to understand how the INDI Focuser "main control" tab backlash setting works. Also compatible with Celestron PWI. Above: A typical motorized focuser, Celestron's Motofocus. Check description for full list. Available in other Styles, Configurations & Kits. This focuser will ensure enhanced optical . All EdgeHD optical tubes. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. This focuser will ensure enhanced optical . Focuser Utility software for Windows provides a simple user interface. Enables the Use of a Focus Motor; Hands- and Vibration-Free Focusing; See All Details. So in the above example, if your real backlash is, say 100, then set the field to 200 and you'll be fine. Check description for full list. Check description for full list. 17. Key Features. I have one and no problems fitted to my CPC925. . New model Celestron Focus Motor (94155-A) for Celestron Schmidt-Cassegrain, EdgeHD and Rowe-Ackermann Schmidt Astrograph (RASA) optical tubes . A little guide about how I approach setting up a new focuser in NINA: estimating backlash, ideal step size, and exposure time. is here at OpticsPlanet with competitive prices $17.96 Off ! Focuser Utility software for Windows provides a simple user interface. That's assuming the focus knob isn't loose of course. Electronics and stepper motor are enclosed in a compact-sized box. Pulley and Belt design allows the motor to stay away from your filter wheel (and not collide with it) when you use a focal reducer. 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. . FocusCube SCT has been replaced by the Focus Cube Zero. Check description for full list. Available in other Styles, Configurations & Kits. - focuser backlash: it is quite bad, mostly due to the fact that the . Beware the road you're embarking on! Focuser Utility software for Windows provides a simple user interface. Key Features. This does not eliminate mirror shift but minimizes backlash and improves focus accuracy. B&H # CEFRKIT MFR # 94255. Benjamin wrote a computation library . Focus accurate and fast your Celestron SCT telescope using our powerful motor focus kit SCT. The device includes a stepper motor for absolute position focusing. Designed in high quality with modern electronics, FocusCube can provide digital precise focus control from a PC. . The hokey-cokey will be use this value. It is especially a problem when moving in the direction opposite the scope's tracking, when the lag before the scope moves can be on the order of 10 seconds if the backlash is bad. Like many things in life, focussing is boring and we should let robots do all the work so we can do more important, human things. Also . Also compatible with . Focuser Utility software for Windows provides a simple user interface. . When this focus motor is installed, you will be able to bring celestial objects into sharp, precise focus using your telescope's hand controller or a computer instead of using the focuser knob. Here's how to focus it: Use your lowest power, longest focal-length eyepiece; turn the knob left to get closer to infinity focus, right for close focus (roughly 20 feet). It has various control functions, including focuser backlash compensation, automatic GoTo indexed focuser position, and multiple speed rates. This focuser will ensure enhanced optical . Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Zero allows backlash free movement and is way faster than older motor. If you have more backlash than this 2 * Initial Step Size then you might see a flat line at the start of the second pass whilst the remaining backlash is "taken up". It is also cheaper than adding a Crayford focuser. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Focus accurately and fast your Celestron SCT telescope using our powerful Motor Focus Kit Zero. B&H # CEFRKIT MFR # 94255. Backlash causes the delay in scope movement when using the direction arrows on the hand control. The new Auto Focusing Aid that comes with APT 3.88 and later is combined effort of Stephen King, Benjamin Schulz, Jim Hunt, Ivaylo and Maria Stoynovs. . The full list is as follows: All SCTs from 6" to 14" in aperture that have been produced since the year 2006. The focus motor also enables autofocusing via third-party software. The NexStar scopes employ backlash compensation, or Anti-backlash as Celestron calls it, to rewind the motor and take up the slack so that the scope starts moving immediately after pressing an arrow button. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Above: A typical motorized focuser, Celestron's Motofocus. THE PERFECT FIT: Starlight Instruments MicroFocuser for the CPC-800 is the ideal upgrade for your Celestron CPC8 or Compatible Telescope (FTM-CPC8) Focuser Utility software for Windows provides a simple user interface. Linear . It fits into the focus shaft of the telescope for smooth control and fine focusing. This driver can be used to : Move the focuser to an absolute position (specific absolute steps) Focus IN and OUT using selected steps (relative position) Abort the focuser motion; Set backlash. Focuser Utility software for Windows provides a simple user interface. DUAL SPEED FOCUSER: For a clear and detailed view, this Celestron telescope focuser has a dual-speed focusing mechanism that offers a 10:1 reduction ratio. The Celetron focus motor is compatible with the Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Check description for full list. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. 1 x Black Aluminium Anodised Margarita Bracket for Celestron SCT Telescopes. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. You can find all your favorite deep sky objects in CPWI's . When connected directly to a computer, USB provides the power 1x . Focuser Utility software for Windows provides a simple user interface. I've followed ZWO's methodology to measure the backlash - drive the focuser 1000 steps one direction, then use the fine focus adjust buttons to move 10 steps at a time the opposite direction until you see the physical fine focus knob on your scope move. Zero Backlash or Flex; Show More. It is pretty much essential if you are to retain accurate focus during auto-focus routines as it makes an allowance for. OTAs: Celestron 8" Edge HD w/Celestron Focus Motor, Meade 80mm APO Triplet Refractor w/ZWO EAF Cameras: ASI533MC Pro, ASI183MC Pro, ASI224MC, ASI120MC-S, ZWO ASI290MM . Instead, use the Celestron Mount driver to control the focuser. Buy now & save $91. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. and focuser backlash compensation. This does not eliminate mirror shift but minimizes backlash and improves focus accuracy. Celestron's 9.25" Edge HD . . You can also use this focus motor with the 11 . Focuser Utility Software for Windows Provides a Simple User . Our focuser gives absolute precision and eliminates inherent image-shift and backlash, even when the primary mirror in the telescope is moved to focus. Celestron's award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. The Celestron Focus Motor for SCT and EdgeHD, Black, 94155-A Additional Features: Compatible with the 9.25in EdgeHD, Color: Black, Weight: 15 oz. This Focus Motor is designed for Celestron Schmidt-Cassegrain (SCT) and EdgeHD telescope optical tube assemblies. Bresser Messier 10:1 Gear Set For . Compatibility: All SCTs produced after 2006 except 5 SCT, all EdgeHD, RASA 8, RASA 36cm, 7 Mak-Cass. At 1,000 counts per turn, it provides up to 65 turns in a single numeric range. . Celestron Focuser Retrofit Kit for RASA 11. Accessory Type: Focusers & Accessories. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Known World Wide for their amazing quality and durability, Starlight Instruments focuser's gives absolute precision and eliminates inherent image-shift and backlash. Check description for full list. Focuser Utility software for Windows provides a simple user interface. Enables autofocusing with a camera and third-party software via ASCOM. Discussions - Scopes / Whole setups. In the Box. Get rid of backlash when adjusting the angle or direction! Focuser Utility software for Windows provides a simple user interface. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. The grease they use on the focusing mechanism isn't always evenly ditributed and doing this will spread the grease out evenly. OTAs: Celestron 8" Edge HD w/Celestron Focus Motor, Meade 80mm APO Triplet Refractor w/ZWO EAF Cameras: ASI533MC Pro, ASI183MC Pro, ASI224MC . Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Most other focus motors are lacking on both counts when used on an SCT. For some observers, the standard focusing mechanism for SCTs is somewhat coarse, exhibits backlash (play in the focus gears), and only operates at a single 'speed' without any fine control of the focus position. Check description for full list. Check description for full list. Add to Cart. Never turn the knob beyond the point where resistance is encountered, or you may damage the focusing mechanism. It fits into the focus shaft of the telescope for smooth control and fine focusing. Moreover motor's gearbox has a low backlash which . The Feathertouch SCT MicroFocuser replaces the original focus knob and adds a 10:1 fine focus adjustment. Focuser Utility software for Windows provides a simple user interface. Focuser Utility software for Windows provides a simple user interface. Get rid of backlash when adjusting the angle or direction! Removed "backlash" features from main UI; Download: Celestron Firmware Manager: 2.7.9144: August-2019: Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. DC jack power: 12V DC, 1A, 5.5mm/2.1mm tip positive plug. . Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. The speed range is good for high speed travel between various optical configurations yet slow enough for fine focusing. and focuser backlash compensation. The controls for the motor include the following: multiple speed rates, an automatic GoTo indexed focuser position and a focuser backlash compensation. Add to Wish List. Fits all 8" Newtonian scopes such as Orion, Sky Watcher, Celestron , Vixen, GSO, Meade Light bridge, DBA, Hardin, Antares, Parks, and Astro Tech. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. A focus motor is great for visual observers who want to dial in exact focus (especially . Motor controls include multiple speed rates automatic goto indexed Focuser position and Focuser backlash compensation ; Focuser Utility software for Windows provides a . Check description for full list. (Reverse these directions for the 4SE.) This video is about understanding and applying focuser backlash compensation. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. It is also compatible with the 8" Rowe-Ackermann Schmidt Astrograph (RASA), the 36cm RASA, the 7" Maksutov-Cassegrain, and all the EdgeHD optical tubes except for the 9.25". This fast and zero backlash stepper motor has the required torque to focus your SCT telescope with great precision. Zero Backlash or Flex; Show More. Even when going to a higher number of ticks, the number of ticks goes up by the backlash, the focuser moves out extra+ y (y is the desired movement outward) ticks . The Celestron focus motor for SCT and EdgeHD enables electronic focusing using a computer or Celestron Computerized mount hand controller for remote/hands-free observing . Check description for full list. I would suggest to Celestron to have rings to improve the overall rigidity of the OTA - thermal expansion: it is very sensitive to change in temperature; the focus position changes dramatically with just 1C deg temperature variation. I also go through the various . Three small screws used to attach a cosmetic cover plate to the OTA are. Losmandy G11G, ZWO OAG, Celestron OAG, ASI 120MM mini guide camera, SV 80ST, TPO RC8, ASI 1600MM Pro, ASI 294MM Pro, ASI filters and filter wheel. I tried fiddling-with and fettling my cheap Celestron focuser, I dismantled it, cleaned, regressed, shimmed, replaced the knobs and in the end became so disenchanted with the sloppy build quality and tolerances I replaced it with a lovely CNC machined Crayford focuser. It fits into the focus shaft of the telescope for smooth control and fine focusing. . Also compatible with Celestron PWI. . Enables autofocusing with a camera and third-party software via ASCOM. Add to Cart. DUAL SPEED FOCUSER: For a clear and detailed view, this Celestron telescope focuser has a dual-speed focusing mechanism that offers a 10:1 reduction ratio. By Mick the Lob May 5. gt71. Get rid of backlash when adjusting the angle or direction! 28% Off: Celestron Focus Motor for SCT and EdgeHD Telescopes MFR: 94155-A. Check description for full list. Check description for full list. The 8" Rowe-Ackermann Schmidt Astrograph (RASA) Please Note: This Celestron Focus Motor for SCT and EdgeHD cannot be used in conjunction with the Celestron .7x Focal Reducer for EdgeHD 925 telescopes. Get rid of backlash when adjusting the angle or direction! 2. Automatic Goto Indexed Focuser Position, and Focuser Backlash Compensation. The Indexed focus position allows the . It fits into the focus shaft of the telescope for smooth control and fine focusing. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. . The Senso (and the Celestron motor focus) look interesting - I am not sure about back focus issues using a moonlight. Review Celestron null The Stepper motor provides high speed, focus accuracy, and zero backlash. Focus fast, reliable and accurate your Celestron SCT telescope by using the "FocusCube Zero".The evolution of technology in astronomy requires a system which will assist the focusing of the telescope with great accuracy. Focuser Utility software for Windows provides a simple user interface. AUX port power: Powered by Celestron computerized mount AUX port, connecting cable supplied. 219.00 VAT inc The Celestron Focus Motor enables electronic focusing using a computer or Celestron computerized mount hand controller for remote/hands-free observing Self-powering: When connected to a Celestron computerized mount, the mount provides the power. focus out and then in same distance so focuser move 1-2mm focus in by small steps while holding caliper and looking when you get focuser into same position note how many steps you needed to do and set this value as backlash compensation focus out and in now with backlash enabled to check with caliper if focuser gets into same position Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Discuss cause of binding between the Celestron focus motor and the SCT focuser shaft. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. 1 x Timing Belt. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. User entered backlash into on-screen backlash field. 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. INSTRUCTIONS TO INSTALL: Before installation, confirm the back cell style of the Celestron SCT telescope, whether it has a flat or triangular pattern. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Backlash under 0.002". The Celestron Focus Motor for SCT and EdgeHD enables electronic focusing using a computer or Celestron computerized mount hand controller for remote/hands-free observing. Used for seamless electronic focusing, this motor can be connected either to a Celestron computerised mount or computer. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. DUAL SPEED FOCUSER: For a clear and detailed view, this Celestron telescope focuser has a dual-speed focusing mechanism that offers a 10:1 reduction ratio. I hope this video makes it easier for anyone out there having problems with backlash. A high quality CNC Machined 10:1 dual-speed Crayford focuser designed as . Focuser Utility software for Windows provides a simple user interface. Repeat a couple of times and it should sort it. Its high torque is suitable for lifting heavy imaging equipment. USB port power: USB3 or USB2 providing at least 900mA. Celestron PWI (CPWI) Telescope Control Software unleashes the full pointing accuracy of your new Celestron computerized telescope. Focuser Utility software for Windows provides a simple user interface. The focus motor is compatible with all Celestron SCTs from 6" to 14" in aperture that have been produced since the year 2006. Enables the Use of a Focus Motor; Hands- and Vibration-Free Focusing; See All Details. In this video, I am calibrating the Sesto Senso focuser, but also showing you how to measure the backlash of any focuser.Feel free to like and subscribe and . Review Celestron null Add to Wish List. Check description for full list. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Auto-Focusing a Celestron EdgeHD 8". When I use the simulator and enable Backlash control in the INDI tab, set a backlash value to 100 steps (for example), and then subsequently use the Ekos focus tab to manually push to a position (forward or backward), it's not apparent from the step count that any backlash adjustment has occurred. Compatible with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD, and Rowe-Ackermann Schmidt Astrograph optical tubes. Celestron PWI (CPWI) Telescope Control Software unleashes the full pointing accuracy of your new Celestron computerized telescope. Takes a few min for the OTA to settle. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. Celestron Focuser Retrofit Kit for RASA 11. Motor controls include multiple speed rates, automatic GoTo indexed focuser position, and focuser backlash compensation. More. The Feathertouch SCT MicroFocuser replaces the original focus knob and adds a 10:1 fine focus adjustment.