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.
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Flattener Installation
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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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