Flattener / Reducer / Correctors
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Flattener / Reducer / Correctors
Corrective optics are a very important component, especially in astrophotography. They turn almost every refractor, Newtonian or other telescope into an astrograph. They flatten the image field, shorten the focal length or correct system-related image errors.
This Reducer Flattener is designed to take the optical performance of your telescope to a new level. With a reduction factor of X0.8 and an outstanding flattener function, it minimizes distortions and aberrations that can occur during observation and photography.
The 0.8x Flattener corrector from William Optics is optimized for full-frame format and suitable for all apos from 102mm aperture with large extensions.
- Connection thread on the telescope side M92x1 - adapters to M68 or M54 are optionally available
- The distance is precisely adjustable, so the corrector can be individually
- optimized to the refractor for best possible stars
- Triplet design with Ohara glass (Japan)
- M48x0.75 camera mount with possibility to screw in 2" filter
This flattener is designed for the Askar 103APO and corrects curvature and coma.
- Designed for the Askar 120APO
- Corrects curvature and cona
- Screwed to the focuser
- Camera-side threads M54x0.75 and M48x0.75
- 55 mm backfocus from the base of the M48 thread
The corrector from Skywatcher reduces the focal length of the Evostar-100EDX and Esprit-70EDX and improves the image in the field.
- Suitable for Skywatcher Evostar-100EDX and Esprit-70EDX
- Shortening factor 0.92x
- Is screwed to the focuser
- Connection at the camera side - M48x0.75 male thread
- Working distance - 55 mm
Focal length reducer for VSD90ss and VSD70ss with two ED lenses for high-end astrophotography and an illumination of 44 mm for full-frame cameras
- Elaborately designed focal length reducer for the VSD90ss/VSD70ss
- Suitable for a 24x36 full format camera
- Four lens elements in four groups for exceptionally sharp star images
- Guarantees a large illumination of the image field up to 44 mm
- Very sharp stars up to the edge of the field of view
- The VSD90ss thus allows extremely short exposure times
- High-quality standard ‘Made in Japan’
- Reduces the focal ratio of the VSD90ss from f5.5 to f3.9
- Dimensions: 92 mm diameter x 59.2 mm length / Weight: 589 g
The Askar 0,8x Reducer - corrector for the 160 mm f/7 triplet apo turns the 140 mm apo into a fast astrograph.
- designed for the Askar 160APO
- brings the focal ratio down to f/5.6
- suitable for full frame cameras
The Askar 1.0x corrector for the 160 mm f/7 triplet apo provides a very good image quality across the entire field of view.
- developed for the Askar 160APO
- provides very good image quality across the entire field of view
- suitable for full-frame cameras
Characteristics:
- Universal Reducer/Flattener for many Apochromats
- High quality optics, calculated by Massimo Riccardi
- High-quality multi coatings
- Excellent image quality up to full frame sensors
The Askar 1.0x corrector for the 140mm f7 Triplet APO provides a very good image quality across the entire field of view.
- developed for the Askar 140APO
- provides very good image quality across the entire field of view
- suitable for full-frame cameras
The Askar 0,8x Reducer - Corrector for the 140mm f7 Triplet APO turns the 140 mm APO into a fast Astrograph.
- designed for the Askar 140APO
- brings the focal ratio down to f5.6
- suitable for full frame cameras
