Askar 103APO 0.6× Reducer This 0.6× reducer is designed specifically for the Askar 103APO. Its quadruplet design corrects the photographic field across a 44 mm full-frame image circle. With the matched telescope, Askar publishes 420.24mm focal length and f/4.08.
Manufacturer model: Askar 103APO 0.6× Reducer · Specifications checked against manufacturer data on 2026-11-04
This 0.6× reducer is designed specifically for the Askar 103APO. Its quadruplet design corrects the photographic field across a 44 mm full-frame image circle. With the matched telescope, Askar publishes 420.24mm focal length and f/4.08.
Optical configuration
Reduction widens the photographed field and lowers the focal ratio while providing field correction. It is a matched optical accessory, rather than a universal reducer for other telescope models. Remove the 103APO’s detachable rear tube section for this 0.6× configuration, as shown in the manufacturer instructions.
Connections and filters
The telescope-side connection is M84×1. Supplied camera-side interfaces are M68×1, M54×0.75 and M48×0.75. An internal M48×0.75 thread accepts a 2-inch filter.
Sensor spacing
Set 55 mm from the base of the M48 male thread to the sensor. This reference applies to the stated M48 camera arrangement; changing the adapter changes the reference face. Include all intervening adapters and optical components when arranging the train.
Construction and storage
The CNC-machined housing has threaded metal caps at both ends for dust protection during storage. The manufacturer technical table lists a weight of 0.98kg. Telescope, camera and filters are separate equipment.
Askar 103APO 0.6× Reducer This 0.6× reducer is designed specifically for the Askar 103APO. Its quadruplet design corrects the photographic field across a 44 mm full-frame image circle. With the matched telescope, Askar publishes 420.24mm focal length and f/4.08.
Manufacturer model: Askar 103APO 0.6× Reducer · Specifications checked against manufacturer data on 2026-11-04
