Askar 103APO f/6.8 Triplet air-spaced APO Telescope 2"/1.25" visual adapters
The 0.6x reducer can bring the Askar 103APO's focal ratio down to F4 while also providing field flattening. The Askar 103APO is a 103mm aperture, 700mm focal length, and 6.8 native focal ratios OTA.