When the reducer is used with V60 objective lens, the focal length is reduced to 270mm, and the focal ratio is increased to f/4.5; when the reducer is used with V80 objective lens, the focal length is reduced to 384mm, and the focal ratio is increased to f/4.8.
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Take action now and embark on your astronomical adventure with the Askar 120APO! Askar 120APO adopts a triplet air-spaced APO lens design, including one piece of ED glass. Askar 120APO is light and compact with a total weight of 6.5kg (including the tube rings).
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A SQA70 OTA, an Oxford cloth case. SQA70 Electronic Focuser Assembly Diagram. Quintuplet petzval APO（including two pieces of ED glass）. Gross weight（including tube ring and dovetail plate）. Rear-end connection distance.
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65PHQ has a focal ratio of f/6.4 and a focal length of 416mm. Instead of buying extra field flatteners lens, calculating the back focus of the flattener, or making a tedious connection to match the correct distance, you can simply equip it with any possible imaging accessories, make the target stay at the focus, and then the whole optical system is perfect for imaging.
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The 0.6x reducer can bring the Askar 103APO's focal ratio down to F4 while also providing field flattening. The Askar 103APO is a 103mm aperture, 700mm focal length, and 6.8 native focal ratios OTA.
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The reducer has a backfocus of 55mm and includes threads for M48X0.75 (2") filters.
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