103APO 0.8x Full-frame Reducer

The Askar 103 APO comes with three optional premium accessories, a 1.0x flattener, a 0.8x reducer, and a 0.6x reducer. Introduced here is the 0.8x reducer, which is optimized for the Askar 103APO, and can provide more possibilities for telescope use.

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Product introduction

 

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

0.8x Reducer Parameters

(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)

0.8x Reducer Size Diagram

11

0.8x Reducer Installation

11

Spot Diagram

11

Video

Images

photo by SANDWALL

Photo by:Drew Evans |  Bat and Squid  |  Askar 103APO+ 0.8X reducer+ZWO ASI2600MCP

 

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