About this product
Model: askar_120_flatt
Part Number: ASKFL12010
Askar Full-Frame 1.0x Flattener for 120APO.
This Askar 1.0x flattener does not change the telescope's focal ratio. After connecting to the Askar 120APO, the focal ratio remains F/7.
It corrects field curvature and coma, resulting in flatter field edges and finer star points.
The triplet optical design design provides a 44mm full-frame image circle.
The back focus distance from the M48 thread is a standard 55mm.
The front thread is M84x1.
At the camera end, it is equipped with M54*0.75 and M48*0.75 adapters, which are convenient for connection.
At the same time, it has a built-in M48*0.75 2-inch filter thread, so a 2" filter can be directly installed and used.
Threaded metal caps are provided to prevent dust from entering when not in use.
The overall weight is 0.75kg.
Flattener Installation
Specifications
(After attaching)120APO Focal length | 840mm |
(After attaching)120APO Focal ratio | f/7 |
Lens Number | Triplet design |
Back Focus | 55mm(from the base of M48 male thread) |
Weight | 0.75kg |
Rear-end thread type | M54×0.75 M54×0.75-M48×0.75(M48×0.75 filter thread inside) |
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