The 0.6x reducer can bring the Askar 103APOs focal ratio down to f/4 while also providing field flattening. Askar 103APO adopts a detachable tube design, where the rear part of the tube can be removed when using the 0.6x reducer, allowing the telescope to have the necessary length to achieve an f/4 focal ratio.
The 0.6x reducer adopts a quadruplet design that also supports a 44 mm full-frame image circle. The overall weight is 0.98 kg. The back focus from the M48 thread is a standard 55 mm. The front thread is M84x1. At the camera end, Askar has equipped three sizes of adapter - M68x1, M54x0.75, and M48x0.75 - for easy subsequent connection and use. At the same time, the built-in M48x0.75 (2-inch) filter thread can be used to install filters directly. The overall CNC-machined, both end threaded metal caps protect the reducer when not in use.
Scope of Delivery:
Products specifications
| Technical Data | | Type: | Focal reducer | | Suitable for telescopes: | Askar 103APO | | Shortening factor: | 0.6x | | Optical design: | four lenses | | Connection to telescope: | M84x1 | | Filter thread telescope side: | M48x0.75 inside | | Camera side threads: | M68x1 male, M54x0.75 male, M48x0.75 male | | Backfocus: | 55 mm from flange of M48 thread |
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