The Askar 140 APO 0.8x reducer is optimized for the Askar 140APO and can provide more possibilities for telescope use.
The 0.8x reducer brings the Askar 140APO´s focal ratio down to F5.6. 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 quadruplet design and supports a 44mm full-frame image circle.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 54*0.75, and M48*0.75 threads, 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.
Scope of Delivery:
- Askar 0,8x Reducer - Corrector for the 140mm f7 Triplet APO
Products specifications
| Technical Data | | 140APO Focal length with 0.8x reducer: | 784mm | | 140APO Focal ratio with 0.8x reducer: | f/5.6 | | Optical design: | Triplet | | Back Focus: | 55mm（from the base of M48 male thread） | | camera side threads: | M54×0.75, M54×0.75-M48×0.75 (M48×0.75 filter thread inside) |
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