Barlow ve Focal Reducer

Askar’s new-launched 3” 0.7x full-frame reducer adapts for 107PHQ & 130PHQ & 151PHQ. It has a triplet design with one ED glass. This reducer, connected with the astrographs, can  effectively shorten the exposure time and dramatically increase your field of view, bringing more conve..

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Askar’ s new-launched 65PHQ 0.75× full-frame reducer has a quadruplet design. The 0.75× reduction gives 65PHQ a shortened focal ratio of f/4.8 and a shortened focal length of 312mm. This reducer, connected with the astrograph, can effectively shorten the exposure time and dramatically increase your ..

Parameter  （After attaching）71F Focal length 369mm  （After attaching）71F Focal ratio f/5.2 Lens Number Triplet design Back Focus 55mm（from the bas..

The Askar new 3 inch 0.76x full frame reducer,with a triplet design and specifically for the 80PHQ, offers a 0.76x reduction in focal ratio, when used with the ..

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Askar provides a brand-new F3.9 full frame reducer for FRA400 astrograph, further reducing the focal length and thus shortening the exposure time on its original 400 focal length and f/5.6 focal ratio design basis. The reduction factor is 0.7×, and the reduced focal length is 280mm, which can satisf..

The Askar 3 inch F3.9 full frame reducer features 4 elements optical design specifically for the FRA600, offers a 0.7X reduction in focal ratio, when used with the FRA600 astrograph, this reducer effectively shortens the exposure time, its focal length is reduced to 420MM, dramatically increases you..

0.7x Reducer Parameters （After attaching）FRA400C Focal length 280mm （After attaching）FRA400C Focal ratio f/3.9 Lens Number Triplet design Back Focus 55..