The Askar 140 APO 1.0 flattener is optimized for the Askar 140APO and provides a very well corrected image field.
The 1.0x flattener does not change the telescope´s focal ratio itself. After connecting with the Askar 185APO, it still maintained a focal ratio of 7. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
The 1.0x flattener adopts a triplet design and 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 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.
Scope of Delivery:
Askar 1.0x Corector for the 140mm f7 Triplet APO
Products specifications
| Technical Data | | Optical design: | Triplet | | Back Focus: | 55mm（from the base of M48 male thread） | | camera side threads: | M68×1, M54×0.75, M54×0.75-M48×0.75 (M48×0.75 filter thread inside) | | Weight: | 0.75kg |
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