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.
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
Designed for 107PHQ, 130PHQ and 151PHQ Reduces focal length by 0.7x Triplet design with ED glass Plugs into focuser Connection threads M68x1 male, M54x0.75 male, M48x0.75 male 55 mm backfocus from M48 thread
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
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
Perfect astrophotography: Whether you are an experienced astrophotographer or an enthusiastic beginner - with this Reducer Flattener you can take impressive pictures with ease.
A valuable addition for the large refractors from William Optics
- Image correction right to the edge
- Reduction factor 0.72x
- M92 threaded connection to the telescope
- Universal connection with M48 to camera or filter wheels etc.
- Very high quality workmanship
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
- Optimized for full-frame photography
- Variable adjustable distance to chip
- No focal length change
- M48 filter thread
It consists of two components:
- The flattener body containing the optics, with M92 male outer thread on the telescope side and M72 female inner thread on the camera side
- An M72 to M48 adaptor-spacer with M72 male outer thread on the flattener side and M48 male outer thread on the camera side. The adaptor has a 21.62mm optical length, to give 55mm sensor to flange distance.
The 3" Photoline 0.8x reducer and corrector is optimized for full frame cameras and suitable for all apos from 102mm aperture - with integrated fine tuning for optimal working distance.
- Optimally suited for large sensors (full frame and larger)
- Connection thread on the telescope side is M92x1 male thread - adapters for focusers from 3" are available
- The distance from the corrector to the camera is precisely adjustable with the camera connected for optimal field sharpness - Position is fixable
- Triplet design with improved color correction - Special glass from Ohara (Japan)
- Camera connection via M48x0.75 adapter with integrated female thread for 2" filter
- Additional M54x0.75 thread for larger camera sensors - prevents vignetting due to M48
- High-quality multi-coating, internal blackening and anti-reflective thread prevent reflections and ghost images
- Dust caps for screwing on the M92 thread and M48 thread are included in the scope of delivery
The corrector and focal reducer is designed for the TSCFAPO130 and allows astrophotography through this telescope.
- Suitable for the TS 130 mm f/7 CF Apo and similar telescopes
- Also Suitable for the TS APO130F7-DEL with the 3.7" RAP focuser
- The focal length is reduced to 80% and the focal ratio is improved - f/7 becomes f/5.6
- The corrector is designed for cameras up to full frame format
- Connection at the telescope side via M92x1 thread (suitable for TSCFAPO130)
- Connection at the camera side via M48x0.75 photo thread
- Intermediate thread M72x1 for individual adaptations
- Working distance is 55 mm from M48 thread, ideal for DSLR, system cameras and astro cameras
- 2" filter thread for connection of nebula filters is available
The corrector fits to the 2" receptacle of the focuser, it corrects the image field for astrophotography
- Suitable for refractor telescopes up to 102 mm aperture or smaller (ED, apo, achromat... )
- Connection telescope side 2" barrel with filter thread
- Connection camera side T2 thread
- Working distance from T2 thread to camera sensor is 55 mm
- No shortening factor, the focal length of the refractor is not changed
Flattener and field corrector for compact 70 mm and 72 mm APO refractors for astrophotography and countryside photography.
- Designed for APO and ED refractor telescopes with 70-72 mm aperture for optimal and sharp astro images.
- Connection at telescope side by M63x1 male thread (with rotation) - M54x0,75 and M68x1 male thread (wihout rotation)
- Connection at camera side by M48x0.75 photo thread
- Working distance from the M48 thread of 55 mm - you have automatically the correct distance if using a DSLR camera and the matching T-adapter.
- The distance is extendable to 71 mm.
- Illumination and field correction possible up to full frame size.
- The focal length of the telescope is not changed.
- The telescope is not included in the scope of delivery.
The corrector fits to the 2" receptacle of the focuser, it corrects the image field for astrophotography
- Suitable for refractor telescopes up to 102 mm aperture or smaller (ED, apo, achromat... )
- Connection telescope side 2" barrel with filter thread
- Connection camera side M48x0.75 thread
- Working distance from M48 thread to camera sensor is 55 mm
- No shortening factor, the focal length of the refractor is not changed
3" 0.7x Reducer/corrector
- Reducer and Field Flattener
- Reduces the focal length by 0.7x
- Flattens the field for astrophotography
- Developed for ED127 and ED152 APO telescopes
- Free aperture of 65mm for large sensors
- Works very well with most coma free systems: apochromats, RCs, Meade ACF
The Photoline corrector is optimized for the TS 85 mm f/6 APO and ED refractor telescopes and corrects the field of view for astrophotography up to full frame format.
- Shortening factor 0.92x
- Connection telescope side: M63x1 male thread
- Connection camera side: M48x0.75 male thread
- Working distance: 55 mm from the connection thread
- ED design for good correction on axis and in the field
- The corrector is optimized for all refractors with 85 mm aperture and f/6, but it will also give good results with similar telescopes.
The TS Photoline 1.0x full-frame flattener corrects the field of view of refractor telescopes and allows astrophotography with perfect edge sharpness
- Full illumination and correction of the image field up to 55 mm sensor diameter
- Factor 1.0x, the focal length remains unchanged.
- Suitable for all refractor telescopes with focusers from 2.5" upwards
- No reflections and ghost images due to high quality coating and anti-reflection thread
- Connections at the telescope side M68x1 male thread and M63x1 male thread (reducing adapter)
- Connections at the camera side M48x0.75 male thread with adaption for 2" filter
- Practical working distance of 55 mm from M48 thread (can be extended to 88 mm)
- Refractors require a working distance of at least 145 mm from the M68 or M63 female thread.
The corrector is optimized for the TS 96 mm f/6 APO and ED refractor telescopes and corrects the field of view for astrophotography up to full frame format.
- Shortening factor 0.92x
- Connection telescope side: M63x1 male thread and M70x1 male thread
- Connection camera side: M48x0.75 male thread
- Working distance: 55 mm from the connection thread
- ED design for good correction on axis and in the field
- The corrector is optimized for all refractors with 96 mm aperture and f/6, but it will also give good results with similar telescopes.
The 1.0x image field corrector is designed for refractor telescopes with 60mm aperture and 360mm focal length and flattens the image field for astrophotography.
- Designed for the TSMPT60 60mm f/6 ED refractor for optimal results.
- Can be used on all 60mm f/6 refractors
- Connection telescope side M54x0.75 male thread
- Connection camera side M48x0.75 male thread
- Working distance from camera thread to sensor is 55 mm - optimal for DSLR system and astro cameras
The 4" corrector and reducer is designed for the large 180mm f/7 Triplet APO and allows astrophotography with full frame cameras at the highest level.
- Improves the focal ratio from f/7 to f/5.6 and reduces the focal length of the apo to 1008 mm
- Full illumination and correction up to full frame
- Working distance is 55 mm from the M48 connection thread
- The corrector is screwed to the focuser of the apo
