3D Printed Motorized OAG Focuser - Part II - Project Updates & Calibration

Dark Sky Geek
Dark Sky Geek
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Published 2023-02-04
At long last, here is the follow up video I had promised last July on the ASCOM-compatible motorized OAG focuser I designed and built. In this episode, I will share a few project updates, and cover the calibration procedure in great detail.

ASCOM-Compatible OAG Focuser GitHub repository:
github.com/jlecomte/ascom-oag-focuser

French subtitles available! / Sous-titres en Français disponibles!

Music credits:
* Scott Holmes Music: Feeling Home
* The 126ers: See You On The Other Side
All Comments (7)
  • @Mhornfeck72205
    I've been using this for focusing my OAG-L, and I built a second one for the primary focuser on my celestron 6SE using your ASCOM driver, but with my own 3d printed mount. Surprisingly, the little 12v stepper works great in direct drive, coupled straight to the brass 13mm shaft underneath the rubber cap of the main focuser. Both focusers have been working great, thanks for coming up with this project! I've been toying with the idea of taking the usual ~500mA 5v input from USB, and adding a 12v pololu boost regulator to charge an extremely small 3s lipo for a mini fpv drone at 12v ~200mA(along with an appropriate BMS), and that will be used to drive the motor. My thought is that it would be able to handle the sudden energy demands of running a focus routine, but then while it's idle during the rest of the imaging session, the boost regulator will be topping the 3s pack back up to ~12v. Maybe you could implement some version of that for your next revision so you won't even need to plug in to charge.😁
  • @Adler69
    you do very cool projects. Explain it in a way that everyone can understand and share it for everyone for free. Thank you for your commitment
  • @larrymatney52
    Thank you for designing this focuser. It is a great project.
  • @screetch82
    Hi, aweseome project and so neede. Could you build one for other users? I have a remote observatory and sometimes the OAG gets out of focus and i have to revert back to my guide scope. I have the same ZWO OAG. Happily suggest a compensation. Thanks
  • @jmlocci
    Excellent projet, que j'ai réalisé sans tarder pour motoriser et compenser non pas la caméra sur l'OAG mais mon focuser principal (ma caméra d'acquisition est une ASI294MM Pro avec ZWO Filter Wheel). J'utilise un stepper en 12V pour l'entrainement direct de la sortie démultipliée de mon focuser JMI. Tout est parfait pour une utilisation standard (un grand MERCI pour le partage de ce projet), sauf que NINA refuse de connecter le Filter Wheel Proxy (<>). J'ai essayé pas mal de choses sans succès. Tout le reste fonctionne normalement. Je n'ai donc pas encore pu déterminer si l'utilisation de la compensation via le proxy était pertinente dans mon cas ou pas. Très curieux... Une idée ?