Askar 103APO 1.0× Flattener This 1× flattener is designed specifically for the Askar 103APO. Its triplet design corrects the photographic field across a 44 mm full-frame image circle. With the matched telescope, Askar publishes 700.4mm focal length and f/6.8.
Manufacturer model: Askar 103APO 1.0× Flattener · Specifications checked against manufacturer data on 2026-11-04
This 1× flattener is designed specifically for the Askar 103APO. Its triplet design corrects the photographic field across a 44 mm full-frame image circle. With the matched telescope, Askar publishes 700.4mm focal length and f/6.8.
Optical configuration
The 1× design retains the telescope’s native focal length and focal ratio while correcting field curvature and coma towards the edge of the image.
Connections and filters
The telescope-side connection is M84×1. Supplied camera-side interfaces are 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 0.58kg. Telescope, camera and filters are separate equipment.
Askar 103APO 1.0× Flattener This 1× flattener is designed specifically for the Askar 103APO. Its triplet design corrects the photographic field across a 44 mm full-frame image circle. With the matched telescope, Askar publishes 700.4mm focal length and f/6.8.
Manufacturer model: Askar 103APO 1.0× Flattener · Specifications checked against manufacturer data on 2026-11-04
