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Before the image generated by the telescope reaches the camera sensor, additional correction is useful:

  • Flatteners smooth the slightly curved image from mirror telescopes and Schmidt-Cassegrain optics.
  • Coma correctors eliminate a Newtonian telescope’s coma defect
  • Reducers are strictly speaking not correctors. They simply shorten the focal length and therefore reduce the required exposure time.

The properties of a reducer are often included in the flatteners and coma correctors, that is, these lenses also change the focal length.

These correctors are not required for purely visual observation, in this case the quality of the eyepiece is more important.

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Omegon Pro Reducer 0.92 Reducer for 85mm and 96 mm f/6 Triplet ED APO
Omegon
Pro Reducer 0.92 Reducer for 85mm and 96 mm f/6 Triplet ED APO
Our price:
RRP:  $ 349.00
$ 299.00
ready for shipping in 24 h
ZWO FF80 Apo 0.76x Full Frame Reducer
ZWO
FF80 Apo 0.76x Full Frame Reducer
$ 325.00
ready for shipping in 3-5 weeks
Lacerta Field Flattener 2"
Lacerta
Field Flattener 2"
$ 216.00
ready for shipping in 1-2 weeks
Tecnosky Variabler Flattener 1.0x M48
Tecnosky
Variabler Flattener 1.0x M48
$ 205.00
ready for shipping in 1-2 weeks
TS Optics Flattener 1.0x
TS Optics
Flattener 1.0x
Our price:
RRP:  $ 178.00
$ 140.00
ready for shipping in 3-7 days
Omegon Reducer 0.7x for 72/400 Quintuplet APO
Omegon
Reducer 0.7x for 72/400 Quintuplet APO
Our price:
RRP:  $ 389.00
$ 369.00
ready for shipping in 24 h
Tecnosky Variabler Flattener 1.0x Full Frame
Tecnosky
Variabler Flattener 1.0x Full Frame
$ 325.00
ready for shipping in 1-2 weeks
Artesky Reducer 0.8x 80ED
Artesky
Reducer 0.8x 80ED
$ 170.00
ready for shipping in 3-5 weeks
Tecnosky Flattener/Reducer 0,8x für 70 und 72 ED Apo
Tecnosky
Flattener/Reducer 0,8x für 70 und 72 ED Apo
$ 151.00
ready for shipping in 1-2 weeks
TS Optics Flattener/Reducer 0.8x
TS Optics
Flattener/Reducer 0.8x
$ 277.00
ready for shipping in 3-7 days
TS Optics Korrektor 0,8x
TS Optics
Korrektor 0,8x
$ 379.00
ready for shipping in 3-7 days
TS Optics Flattener 0.75 M63
TS Optics
Flattener 0.75 M63
$ 434.00
ready for shipping in 3-7 days
TS Optics Flattener/Reducer 0.92x
TS Optics
Flattener/Reducer 0.92x
$ 650.00
ready for shipping in 3-7 days
Meade Komakorrektor 1.0 x 2"
Meade
Komakorrektor 1.0 x 2"
$ 216.00
ready for shipping in 3-5 weeks
TS Optics Korrektor 0,75x
TS Optics
Korrektor 0,75x
Our price:
RRP:  $ 650.00
$ 620.00
ready for shipping in 3-7 days
TeleVue Reducer 0.8x NPR
TeleVue
Reducer 0.8x NPR
$ 600.00
ready for shipping in 3-5 weeks
Explore Scientific Flattener ED80 & ED102
Explore Scientific
Flattener ED80 & ED102
Our price:
RRP:  $ 195.00
$ 140.00
ready for shipping in 1-2 weeks
TS Optics Flattener/Reducer 0.92x
TS Optics
Flattener/Reducer 0.92x
$ 325.00
ready for shipping in 3-7 days
Askar Reducer 0.7x
Askar
Reducer 0.7x
$ 620.00
ready for shipping in 3-7 days
TS Optics Flattener/Reducer 0.92x
TS Optics
Flattener/Reducer 0.92x
$ 325.00
ready for shipping in 24 h
Artesky Reducer 0.8x 102ED
Artesky
Reducer 0.8x 102ED
$ 170.00
ready for shipping in 3-5 weeks
William Optics Flat6A III Special Edition FLT91
William Optics
Flat6A III Special Edition FLT91
$ 590.00
ready for shipping in 3-5 weeks
Omegon Pro Reducer 0.75x for 106 f/6.6 Triplet ED APO
Omegon
Pro Reducer 0.75x for 106 f/6.6 Triplet ED APO
$ 469.00
ready for shipping in 24 h
Sharpstar Flattener 1.0x
Sharpstar
Flattener 1.0x
Our price:
RRP:  $ 350.00
$ 314.00
ready for shipping in 3-7 days
Tecnosky Flattener/Reducer 0,8x OWL 180 SLD
Tecnosky
Flattener/Reducer 0,8x OWL 180 SLD
$ 1,520.00
ready for shipping in 1-2 weeks
Askar Flattener/Reducer 0.8x
Askar
Flattener/Reducer 0.8x
$ 487.00
ready for shipping in 3-7 days
Toscanoptics Korrektur-Platte SC 9"
Toscanoptics
Korrektur-Platte SC 9"
$ 850.00
ready for shipping in 6-10 weeks
Toscanoptics Korrektur-Platte SC 11"
Toscanoptics
Korrektur-Platte SC 11"
$ 1,080.00
ready for shipping in 6-10 weeks
Toscanoptics Korrektur-Platte SC 8"
Toscanoptics
Korrektur-Platte SC 8"
$ 550.00
ready for shipping in 6-10 weeks
Toscanoptics Korrektur-Platte SC 14"
Toscanoptics
Korrektur-Platte SC 14"
$ 1,850.00
ready for shipping in 6-10 weeks
Starizona SCT Corrector LF Large Format Reducer
Starizona
SCT Corrector LF Large Format Reducer
$ 880.00
ready for shipping in 3-7 days
Omegon 0.5X reducer for photography
Omegon
0.5X reducer for photography
( 3 / 5 )
$ 39.90
ready for shipping in 24 h
Omegon Field Flattener 2''
Omegon
Field Flattener 2''
( 4 / 5 )
$ 259.00
ready for shipping in 24 h
Omegon Pro Field Flattener 2,5"
Omegon
Pro Field Flattener 2,5"
$ 299.00
ready for shipping in 24 h
William Optics Full-Frame Flattener/Reducer 0.72x
William Optics
Full-Frame Flattener/Reducer 0.72x
$ 970.00
ready for shipping in 3-5 weeks
William Optics Flattener Flat73A for ZenithStar 73
William Optics
Flattener Flat73A for ZenithStar 73
$ 336.00
ready for shipping in 24 h