eFinder CM is a digital finder for astronomical telescopes, utilising plate-solving to improve pointing accuracy, and an IMU to estimate telescope position in-between plate-solves. The DIY versions are,
- Full Version, functionally the same as the commercially available device (AstroDevices).
- Lite Version, with no UART board it has no ServoCat/SkyTracker support.
Requires:
- microSd card loaded with Raspberry Pi 64bit Bookworm OS Lite (No desktop)
- Raspberry Pi CM4 or Pi4b
- BNO085 IMU
- Waveshare Nano Base Board (B)
- CP2303 UART module (Full version only)
- A custom housing. 3d print files will be available
- A Camera, the RPi HQ Camera module is recommended, although the Arducam equivalent can work.
- Camera lens, 25mm f1.2 cctv lens
- A host computer (or Nexus DSC Pro)
Full details at https://astrokeith.com/equipment/efinder
The repo includes a pdf describing how to prepare a complete working micro sdCard for the Pi CM4
The eFinder CM is designed to operate alongside a host computer or Nexus DSC Pro
ssh & Samba file sharing is enabled at efinder.local, or whatever hostname you have chosen.
A forum for builders and users can be found at https://groups.io/g/eFinder
The eFinder CM uses olive-solve.