DYI accessories for astrophotography
Astrodevice is a non-commercial project in which I publish my own designs for astronomy and astrophotography accessories.
News and releases
2025-12-06 - Rev 1.1 of the M87 filter drawer has been released.
- Added M87 filter drawer version for Player One cameras
- Changed directory structure
- Fixed bug: added missing side blinder file for 860 mm diameter camera versions
- Changed recommended 3D printing settings
2025-12-06 - Added notes on PETG+CF filaments
The full list of announcements is available here. If you would like to be personally informed about new releases, updates and other announcemens, please contact me.
If you have a ZWO ASI or Player One camera with a 17.5 mm backfocus, you probably have quite a problem to attach this camera to a Celestron RASA 8 telescope in such a way that you can determine the correct distance of the sensor to the front of the telescope. According to the manufacturer, this should be 28.73 mm. You can use various adapters for this, but the real trouble comes when you want to use the filter drawer. To solve this problem, I designed a brand new drawer, deduced just for such an astrophotography kit.
My drawers work with the cameras:
- ZWO ASI 2400 MC Pro
- ZWO ASI 2600 MM/MC Pro | Duo | Air
- ZWO ASI 4400 MC Pro1
- ZWO ASI 6200 MM/MC Pro
- ZWO ASI 071 MC Pro
- Player One Zeus 455 M/C Pro
- Player One Poseidon M/C Pro
- Player One Artemis M/C Pro
Adapters allowing the use of unmounted 36 mm or 31 mm filters in standard 2" filter slots.
Adapters for 31 mm and 36 mm unmounted filters enable their mechanical mounting in standard 2" (M48) threaded slots used in drawers and filter wheels. The body, with a diameter of 50.8 mm and a height of 7.18 mm, ensures proper seating in the 2" socket without the risk of collision with optical elements and maintains the required backfocus in typical astrophotography kits. When the unmounted filter is placed in the adapter, we obtain a functional equivalent of a 2" filter, which allows the same LRGB and narrowband sets to be used with cameras requiring different filter formats. This solution minimizes vignetting for APS-C and many full-frame sensors and simplifies system configuration by reducing the need to purchase duplicate filters in different mechanical standards.
The band mounted on the astrophotography camera allows for orderly routing of power and signal cables, reducing the risk of snagging on the mount or other elements of the setup. The element is designed as an easy-to-print, flexible 3D organizer that, after slight expansion, slides onto the camera body and securely covers the housing. The outer profile contains several parallel channels and slots for cable ties, allowing for the separation of USB cables and 12 V power cables. The design is compatible with most astro-cameras, including ZWO, QHY, Touptek, Ogma and Svbony.
With this cable band, the fixed cable arrangement reduces stress on the connectors, improves the aesthetics of the set, and reduces the risk of tracking errors during long exposures.