ASKAR 185APO 0.8 Reducer
![](https://omo-oss-image.thefastimg.com/portal-saas/new2022072923460240318/cms/image/18c752b6-355c-4842-9e5c-fa1179d7531d.jpg)
The 0.8x reducer can bring Askar 185APO’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 M92*1. At the camera end, it is equipped with M68*1, M54*0.75, and M48*0.75 three 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.
![](https://omo-oss-image.thefastimg.com/common/design/detail/e1e747bd-bd76-4f66-9431-28ee7a567042.jpg)
Specifications
0.8x Reducer Parameters | ||
(After attaching)140APO Focal length | 1036mm | |
(After attaching)140APO Focal ratio | f/5.6 | |
Lens Number | Quadruplet design | |
Back Focus | 55mm(from the base of M48 male thread) | |
Weight | 0.95kg | |
Rear-end thread type | M68×1 M54×0.75 M54×0.75-M48×0.75 (M48×0.75 filter thread inside) |
0.8x Reducer Size Diagram |
0.8x Reducer Installation |
Spot Diagram |
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