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This reducer, when used with the 65PHQ astrograph, can effectively shorten the exposure time and significantly increase the field of view.
specially designed for the 65PHQ reduces the focal length by 0.75x four-lens system camera-side threads M54 and M48 65 or 55 mm backfocus
This reducer, connected with the astrographs,
can effectively shorten the exposure time and dramatically increase
your field of view. Designed for 107PHQ, 130PHQ and 151PHQ Reduces focal length by 0.7x Triplet design with ED glass Connection threads M68x1 male, M54x0.75 male, M48x0.75 male 55 mm backfocus from M48 thread
The Askar 0,8x Reducer - Corrector for the 185mm f7 Triplet APO turns the 185 mm APO into a fast Astrograph.
designed for the Askar 185APO brings the focal ratio down to f5.6 suitable for full frame cameras
The Askar 1.0x corrector for the 185mm f7 Triplet APO provides a very good image quality across the entire field of view.
developed for the Askar 185APO provides very good image quality across the entire field of view suitable for full-frame cameras