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 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
This reducer effectively shortens the exposure time and significantly increases the field of view.
- Designed for the Askar 103APO
- Reduces the focal length by a factor of 0.6
- Screwed to the focuser
- Camera-side threads M68x1, M54x0.75 and M48x0.75
- 55 mm backfocus from M48 thread
This reducer effectively shortens the exposure time and significantly increases the field of view.
- Designed for the Askar 103APO
- Reduces the focal length by a factor of 0.8
- Screwed to the focuser
- Camera-side threads M68x1, M54x0.75 and M48x0.75
- 55 mm backfocus from M48 thread
This flattener is designed for the Askar 103APO and corrects curvature and coma.
- Designed for the Askar 103APO
- corrects curvature and cona
- Screwed to the focuser
- Camera-side threads M68x1, M54x0.75 and M48x0.75
- 55 mm backfocus from M48 thread
