ZWO ASI cameras with Canon EF Lenses, focus control via astromechanics EOS Focuser - YungKC/astrophotography GitHub Wiki

Equipment

  1. Astromechanics ASCOM Canon Lens Controller Mark II
  2. ZWO ASI cameras, manuals
  3. Canon EF Lenses
  4. M42 extension tubes to match back focus distance
  5. 1.25" filters: optolong l-enhence, uv-ir cut
  6. T2-1.25" adapter

Back Focus Requirement

  1. total of 44 mm
    1. 17 (Controller) + 10 (extension tube) + 5 (extension tube) + 12.5 (ASI 224mc Sensor Spacing) = 44.5mm
    2. 17 (Controller) + 20 (extension tube) + 6.5 (ASI 294mm pro Sensor Spacing) = 43.5mm
    3. 17 (Controller) + 10 (extension tube) + 11 (ZWO spacer) + 6.5 (ASI 294mm pro Sensor Spacing) = 44.5mm