Model:  askar_140apo_flattener
Part Number:  ASKAR140FL

This 1.0x flattener for the Askar 140 APO Triplet telescope corrects field curvature and coma, resulting in flatter field edges and finer star points.

It does this without changing the telescope's focal ratio, which remains f/7. 

The 1.0x flattener features a triplet optical design that supports a 44mm full-frame image circle.

The overall weight is 0.75kg.

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 three separate adapters, M68*1, M54*0.75 and M48*0.75, which are convenient for connection.

It also has a built-in M48*0.75 2-inch filter thread, so a 2" filter can be directly installed and used. 

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