Askar 0.8x Full Frame Reducer for 185 APO Triplet

Product code: ASKAR-RED185APO
in stock
£315.00 UK Price
£262.50 (ex. VAT) International Price
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Product information

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.


0.8x Reducer Parameters

(After attaching)140APO Focal length


(After attaching)140APO Focal ratio


Lens Number

Quadruplet design

Back Focus

55mm(from the base of M48 male thread)



Rear-end thread type

M54×0.75-M48×0.75 (M48×0.75 filter thread inside)

0.8x Reducer Size Diagram

0.8x Reducer Installation

Spot Diagram

Product Info

Product Code ASKAR-RED185APO
Delivery Weight Package