stepper motor for telescope focuser


Thanks and clear skies ! Testing my ASCOM telescope focuser motor, using an Arduino Mega, a 400 step motor and the Big Easy Stepper motor driver. By amateur astronomers for amateur astronomers. Select options. Micro Touch Focusing System - 2 Piece Kit (hub/hand control and motor . Please note, it will not work with two single port controllers. ±8mm (at focal plane ±48mm) Minimum step. The gear coupling of the stepper to focus shaft provides up to 9,600 steps per revolution in full step mode and 19,200 in half step mode to supply the exceptionally fine focus movement required for fast telescopes. More on this below. Page 1 of 2 - Stepper Motor Focuser For 6/8SE Scopes - posted in Celestron Computerized Telescopes: Well folks, the project is finally complete. (c) Copyright Robert Brown 2014-2021. This book describes in precise detail how amateur astronomers can find comets and capture spectacular images of them using modern telescopes, CCDs, and digital SLRs. I'll describe the basic connections and setup, details left up to you. Not so much a cost exercise, but yes, the commercial alternatives are all at least 200+. I’ve also added the Pegasus Astro Pocket Powerbox to the mix, and it now powers everything from my camera to the dew heaters. Moreover motor's gearbox has a low backlash which can easily . The focuser would only move one direction (outwards) no matter which command I sent. Supplied Motor is a high resolution geared stepper motor (Step Angle 7.5, Deg 120, Gear Ration 1:120). This "Handy" stepper motor unit works exclusively on the Focuser Boss II electronic focuser. This document shows how the unipolar motor of the MOONLITE focuser can be controlled with a board from the Arduino shield set or with a TAYGETA-3 board fitted with the unipolar stepper motor driver. ASCOM telescope focuser with Arduino. The Seletek Limpet controller, includes the power supply cable, with screwed on terminal, and a tripod thread screw; Stepper motor (3600 steps/turn) Arduino-based Telescope Focuser. it is compatible to most iOptron later version mounts. Prodigy includes 2xUSB2 . Read more. The computer outside ran the focus motor controller, which was plugged into the stepper motor via a D-Sub connection. $335.00. This sketch implements telescope focuser controller logic for a stepper motor and a Pololu DRV8825 stepper driver board. Please don't fill out this field. The controller is fully compatible with ASCOM 6. FocusDream is a control unit for electrical focusers which designed in order to to expand the user and technical capabilities of standard electrical and moto focuser produced under Sky-Watcher (Synta), Orion, Levenhuk and other brands. While PixInsight is extremely powerful, very little has been printed on the subject. The first edition of this book broke that mold, offering a comprehensive look into the software’s capabilities. Once installed, it allows you to make precision adjustments to your telescope focus without touching the telescope. This is a simplified version of the Arduino Focuser, no Rotary encoder, no keypad, no LCD readout. Micro Touch Focusing System - 3 Piece Kit (hub/hand control, motor . Thanks Matt, I will continue looking into it:), Not completely, no! Starlight Instruments is proud to announce the release of the SI-RCEF which allows you to electronically control the helical focuser of the William Optics Red Cat 51mm Telescope with a modified version of our Handy Stepper Motor (HSM). The stepper motor and shaft adapter installed on the Moonlight focuser. All Rights Reserved. Quick question. Please provide the ad click URL, if possible: Anytime, anywhere access lets you remotely control devices and help keep your clients up and running. My project idea is, I hope, a simple idea but I do need help on getting started. Focuser Boss II Electronic Focusing Control $325.00. It take automatic control of the CCD camera and focuser, and dances around magically on the screen, arriving at perfect focus within about 30s to 3 minutes depending on where you started from. Add a stepper motor to any telescope. (This may not be possible with some types of ads). Love the channel. You’ll find up-to-date drivers and software downloads for the focus controller on the Pegasus Astro website under “support“. Ill post enough information to show you how its set up. I then examined various ways of doing it, and I ended up with the following: The best motor to use is a stepper motor (which has the peculiarity that you can precisely control its revolutions and it speed). A popular DIY ASCOM focuser with more than 106,000+ downloads. Motorize your focuser with the powerful Rigel nSTEP Stepper Motor. - The high resolution stepper motor option . No More Second Guessing Using focus automation software, you don't need to waste unnecessary time trying to double and triple check focus.By using V-Curve models to automatically identify the best focus position, software can accurately find perfect focus on . Get full visibility and control over your tasks and projects with Wrike. Necessary cookies are absolutely essential for the website to function properly. The probe can be placed near the focuser so the exact temperature of the focuser / environment can be seen through the supplied software or ASCOM driver. Here is the first test to drive the stepper from an Arduino. Telescope Focuser control software for the Arduino board and a Visual Basic Ascom driver for windows. It take automatic control of the CCD camera and focuser, and dances around magically on the screen, arriving at perfect focus within about 30s to 3 minutes depending on where you started from. I am also running a separate 5V supply for the ULN2003 Motor Drivers and 28BYJ-48 Stepper Motors. Wrike offers world-class features that... MASV is the fastest and most reliable way for video and creative professionals to securely send large files. This is my first experience with an Arduino project. MicroTouch Low-Profile Stepper Motor. With over 140,000 separate dictionary-style entries, and over 20 years in collation, StarBriefs 2001 represents the most comprehensive and accurately validated collection of abbreviations, acronyms, contractions, and symbols within ... Found inside – Page 199The box farthest from the telescope contains stepper motor drivers and a thermometry circuit . ... GRIM incorporates an array of cold slits , a collimated beam section , a focuser , a grism for low resolution spectroscopy , a large ... Right-click on the ad, choose "Copy Link", then paste here → But opting out of some of these cookies may have an effect on your browsing experience. I still use the DSLR all the time:). Found inside – Page 331A motorised focuser would make life very much easier, allowing all the adjustments to be done by remote control ... Many authorities recommend deliberately unbalancing the telescope in right ascension so that the drive motor has to work ... Found inside – Page 210Schmidt Cassegrain telescope was announced in September 1980. ... The clock drive uses a stepper motor, but with no speed control. The mount and drive work in very cold weather, but its mirror focuser freezes. for the ultimate in accurate auto-focusing. System includes custom designed stepper motor, RF3 control module, mounting hardware (brackets, shaft coupler, and/or timing sprocket), power converter/adapter (110vAC to 12vDC), cables, PC software (on CD) and comprehensive instruction manual. Extreme Precision High-resolution stepper motors allow for the finest micro-adjustments to be made so you can dial in razor-sharp focus. Now you can focus the telescope by pushing a hand controller button. We'll assume you're ok with this, but you can opt-out if you wish. Two push buttons are used to slew the telescope north or south. At first, I roughly planned to use a motor, whose speed could have been regulated by the user, to let the focuser knob rotate. Onehub... opencv_python‑4.1.1‑cp37‑cp37m‑win_amd64.whl, ASCOM driver tested with FocusMax, Nebulosity 4.1.1, APT v3.13 and ScopeFocus, Supported Driver Boards - A4998, ULN2003, L293D, L298N, DRV8825, EasyDriver, ST6128, RAPS128, TMC2225/2209, Software - Windows Application or fully compliant ASCOM driver, Create using stripboard layout or using PCB design, Tested with INDI moonlite driver under Ubuntu and Ekos, Tested on MacBook with TheSky and Moonlite driver, Manual or full automated remote control (eg focusmax), Manual control by Push Buttons, Infra-red controller, rotary encoder, Manual zero position (hold down both push buttons for 2 seconds) or via application/ASCOM driver, Arduino code, ASCOM driver and Windows Application support for all build options, LED indications for IN, OUT (optional) and external PWR, LCD1602/I2C display (optional) for positional information (Current and Target positions), Temperature probe support (optional - DS18B20 accurate to 0.5 degree), Reverse voltage protection on 12VDC input, Option1: 28BYJ-48 Stepper Motor and ULN2003 driver board using Arduino Nano, Option2: NEMA17HS15-0404S-PG5 Stepper Motor and L293D Motor Shield using Arduino Uno. I used the following parts: Aluminum 50 tooth MXL pulley with 15 mm bore Aluminum 30 tooth MXL . Why are there so many variations of positions of targets in astro imaging? Focuser not included. $325.00. I have been using a Robofocus focus controller for many years now to control a Robofocus geared stepper motor on my various imaging telescopes. Under the focusing knob's rubber grip was a smooth shaft, which made it a snap to add a pulley and a belt going to the stepper motor. I’ll continue to share my experiences using the stepper motor kit and controller over the coming months. SKU MTAF-LPSM. From the reviews: "This is one of several dozen books in Patrick Moore's "Practical Astronomy" series. Amid this large family, Mobberley finds his niche: the beginning high-tech amateur. The developer is very responsive to help and feature requests. This motor has a built-in temperature thermistor for temperature control through the SI-EFS and the Focuser Boss II digital system. Peter Manly surveys more than 150 unusual telescopes designed by amateur and professional astronomers to suit some special need. In the video I saw that the actual focuser position is shown in the window of the software package. Feather Touch® Micro Focuser for Celestron CPC9.25 $ 625.00. The rotator is a double row bearing design that installs between the focuser's existing upper and lower flange assembly. The evolution of technology in astronomy requires a system which will assist the focusing of the telescope with great accuracy. The addition of a Pegasus Astro Dual Focus Motor controller means that I can now adjust my focus on the fly, without venturing back outside once everything is set up. With the Pi Zero and a stepper motor, he's now able to focus the telescope with more accuracy and repeatability than clumsy human fingers will be able to replicate. SGL Focuser Control. Using 2 push buttons, you can select 5 focusing speeds, increasing every time you press the same button and decreasing as you press the other one. Your email address will not be published. The evolution of technology in astronomy requires a system which will assist the focusing of the telescope with great accuracy. It’s ASCOM compliant, so you’ll be able to use it with your favorite camera control and image sequence software. I understand that I can withdraw my consent at anytime. I've done this in the past with a stepper and an arduino but it was cumbersome, the motor was crap and there were other issues. The Pegasus Astro Stepper Motor Kit Installed on my Explore Scientific ED102. Thank you very much for sharing this project. All Rights Reserved. Although this book is highly comprehensive, it is suitable for beginners – there is a chapter on "Astronomy Basics" – and experts alike. Designed in high quality with modern electronics it can provide digital precise control of compatible motor focusers from a PC. The tripod mount on the scope's body had some extra room on it, so it was the perfect place to put a stepper motor bracket. IT MOVED!!! Feather Touch® Micro Focuser for Meade F10 14″ Schmidt . If your focuser has the Shaft lock option, just the knob is removed. It runs on the firmware developed by R. Brown (2021). The mounting bracket for the motor is cut from a 4" piece of right-angle aluminum stock. The author maintains the project updated and he is always ready to answer any suggestions or queries. In terms of the motor resolution, FocuserOne supports full-step mode, half step mode, and two microstepping modes - 1/8 and 1/32 step. Having the ability to adjust the focus of my camera while sitting indoors still blows me away! This powerful Motor Focus Kit enables both fast and accurate telescope focusing. It works the way it should, but I do not have anything to compare this to, as I have never owned a focus motor controller before. For me, the process of installing the stepper motor to my telescope involved disassembling the focuser drawtube. I simply leave this application running during my imaging session to control the focus. Description. Remove Left side knob or shaft lock knob off the shaft by backing out the setscrew with an 5/64" Allen wrench. Hi Trevor, great video again. The stepper motor has a 0.1-degree step size and can effortlessly lift up to 8 lbs. . How Auto Focus Works. Although I mainly control the stepper motor using the Focus Control software from Pegasus Astro, I certainly appreciate the ability to make manual adjustments using the dial. This was something I had never done before and definitely felt a little strange. Focuser has a 25mm of draw tube travel and a clear aperture of 76mm / 3". The stepper installed on the mount. Its gearbox has very low backlash and high torque suitable to focus in micron scale. Pegasus Astro offers step by step instructions for installing the focuser on their website. Stepper motor has 0.1 degree step size, easily lifts 8 pounds. The digital probe of length of one (1) m is supplied. The stepper motor is driven with an A4988 stepper motor driver board and controlled with an Arduino Uno microcontroller. You can update the controller’s firmware using a USB 2.0 connection to your PC if updates become available in the future. Best Sellers in Telescope Motor Drives #1. Powerful stepper motor Zero backlash This is the must-have guide for all amateur astronomers who double as makers, doers, tinkerers, problem-solvers, and inventors. Hey Drew – Sorry about that, I’ve added a link in the post. :-) First update 12 September 2011. Its high torque is suitable for lifting heavy imaging equipment. Lakeside Motor Focuser - Telescope Bracket (1) £49.00 Add to Basket. Hi. The image above was captured using the Stepper Motor Kit to focus the telescope. Focuser Boss II Electronic Focusing Control $325.00. This includes framing my target using Cartes Du Ciel to control the mount. To find out if you need to update the software, just click on the “i” (information) icon within the standalone software, and click “check for updates”. The Pegasus Astro stepper motor kit is an affordable way to give your astrophotography telescope a huge upgrade. With Pegasus Astro DMFC, you could empower your telescope with motorised focuser capability and with the right. Pegasus Astro: Prodigy is our new 3" robotic microfocuser. Quantity. Those of you that own a personal observatory with a permanent setup are more likely to invest in an automated focus solution. This website uses cookies to improve your experience while you navigate through the website. Provides easy to understand information and guidelines about the design and construction of binoscopes Focusing on both homemade and commercial products, this book provides the reader with simple and straightforward information about the ... Astrophotography enthusiasts looking to automate their focusing procedure have a few options. Just frame it as it suits you best. This motor has a built-in temperature thermistor for temperature control through the . Once the mount was polar aligned and ready to go, all further imaging steps were taken remotely from in the house. One would have to remove a knob on the focuser which is what other Stepper motors do then attach the unit to be able to then control the Focuser, So in fact the EAF is a Stepper motor in a metal housing as others on the market with the exception it will be controlled with ASIair via Tablet / Smart Phone - Laptop ,which is what makes it unique to us who wait for its release! Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. This eliminates the backlash (and potential cause of defects) induced by gearboxes which would have to be used with lower power motors. Hi Scott, I saw your question to Trevor and think I can explain. PegasusAstro Focuser upgrades. Hey Ken – I didn’t route the connection for the Pegasus focuser into the CEM60 (or any connections for that matter) I’ve been using a separate powered USB hub (ANKER) and that’s been working well.
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