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.
Celestron
Reducer 0.63x / Corrector
( 4.5 / 5 )
$ 172.00
ready for shipping in 1-2
weeks
Omegon
0.5X reducer for photography
( 3 / 5 )
$ 34.90
ready for shipping in 24
h
Baader
MPCC Mark III - Multi Purpose Newton Coma Correktor
$ 215.00
ready for shipping in 1-2
weeks
Celestron
Reducer 0.7x EdgeHD 800
$ 550.00
ready for shipping in 24
h
ZWO
F65 Reducer 0,75x
$ 345.00
ready for shipping in 24
h
Omegon
Field Flattener 2''
( 4 / 5 )
$ 249.00
ready for shipping in 24
h
TS Optics
1.0x2" coma corrector
$ 381.00
ready for shipping in 3-7
days
Skywatcher
Flattener 0.85x EvoStar 72 ED
$ 345.00
ready for shipping in 24
h
Skywatcher
0.85x Focal Reducer/Corrector for Evostar-100ED DS-PRO
$ 345.00
ready for shipping in 24
h
William Optics
Flattner Flat61A for Z61
$ 334.00
ready for shipping in 24
h
Celestron
Reducer 0.7x EdgeHD 925
$ 680.00
ready for shipping in 1-2
weeks
Omegon
Pro Reducer 0.75x for 106 f/6.6 Triplet ED APO
$ 369.00
Sale price:
$ 295.00
ready for shipping in 24
h
Celestron
Reducer 0.7x EdgeHD 1100
$ 1,390.00
ready for shipping in 1-2
weeks
Askar
Reducer 0.8x 103APO
$ 299.00
ready for shipping in 24
h
Askar
Reducer 0.75x 60F
$ 276.00
ready for shipping in 1-2
weeks
Askar
Reducer 0.8x 140APO
$ 460.00
ready for shipping in 24
h
TS Optics
Flattener/Reducer 0.8x CF-APO 80
$ 300.00
ready for shipping in 3-7
days
Omegon
Pro Reducer 0.75x für RC
$ 89.00
ready for shipping in 24
h
Celestron
Reducer 0.7x EdgeHD 1400
$ 1,390.00
ready for shipping in 1-2
weeks
ZWO
FF80 Apo 0.76x Full Frame Reducer
$ 437.00
Product can be shipped as of 15.04.2026
Omegon
Reducer 0.7x for 72/400 Quintuplet APO
$ 279.00
ready for shipping in 24
h
Askar
Reducer 0.8x 120APO
$ 299.00
ready for shipping in 3-5
weeks
Skywatcher
2", F4 aplanatic coma corrector
( 5 / 5 )
$ 421.00
ready for shipping in 1-2
weeks
Omegon
Pro Reducer 0.92 Reducer for 85mm and 96 mm f/6 Triplet ED APO
$ 289.00
ready for shipping in 24
h
William Optics
Flattener Flat73A for ZenithStar 73
$ 334.00
ready for shipping in 24
h
William Optics
Adjustable Flattener Reducer Flat6AIII
$ 334.00
ready for shipping in 3-5
weeks
TeleVue
Komakorrektor Paracorr Type 2
RRP:
$ 880.00
Our price:
$ 735.00
ready for shipping in 6-10
weeks
TS Optics
Coma corrector 0.95x 2"
$ 329.00
ready for shipping in 3-7
days
Askar
Reducer 0.7x
$ 345.00
ready for shipping in 24
h
William Optics
Flattener Flat68III
$ 1,010.00
ready for shipping in 3-5
weeks
TS Optics
F/6.3 focal reducer/corrector for SC telescopes
RRP:
$ 191.00
Our price:
$ 138.00
ready for shipping in 3-7
days
Baader
MPCC V-1 Mark III Newton Coma Correktor Set 2"
$ 260.00
ready for shipping in 1-2
weeks
TS Optics
Flattener 1.0x M63
$ 344.00
ready for shipping in 3-7
days
Explore Scientific
Flattener ED80 & ED102
$ 207.00
ready for shipping in 1-2
weeks
TS Optics
2'' CCD reducer, 0.67X for RC telescopes up to f/8
$ 294.00
ready for shipping in 3-7
days
Tecnosky
Four Elements Flattener/Reducer 0,8x
$ 202.00
ready for shipping in 24
h