Askar 0.8x Full Frame Reducer / Flattener for 103APO Telescope

The 0.8x reducer can bring Askar 103APO's focal ratio down to F5.4. This is a standard reducer with field flattening capabilities as well. A shorter focal ratio allows the OTA to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters, and faint, fast-moving celestial objects.

The 0.8x reducer adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.48kg. The back focus from the M48 thread is a standard 55mm. The front thread is M84*1. At the camera end, it is equipped with M54*0.75 and M48*0.75 two sizes of adapters, which are convenient for connection. At the same time, it has a built-in M48*0.75 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use.

Specifications:

• (After attaching) 103APO Focal length: 560.32mm
• (After attaching) 103APO Focal ratio: f/5.44
• Lens Number: Triplet design
• Back Focus: 55mm (from the base of M48 male thread）
• Weight: 0.48kg
• Rear-end thread type:
  • M54×0.75
  • M54×0.75-M48×0.75 (M48×0.75 filter thread inside)