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FREE SHIPPING FOR ORDERS OVER $500* Some exceptions may apply. / This is Astronomy Plus OFFICIAL website.
FREE SHIPPING FOR ORDERS OVER $500* Some exceptions may apply. / This is Astronomy Plus OFFICIAL website

Flatteners, Correctors, Reducers & ADC

This is our collection from various brands of image correctors. Field flattener, coma correctors, reducers etc. This is a need when you are into astrophotography!

Original price $173.00 - Original price $173.00
Original price
$173.00
$173.00 - $173.00
Current price $173.00

ZWO Atmospheric Dispersion Corrector (ADC)

ZWO Atmospheric Dispersion Corrector ZWO Atmospheric Dispersion Corrector (ADC) is used to reduce the effect of atmospheric dispersion on lunar and...

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Original price $173.00 - Original price $173.00
Original price
$173.00
$173.00 - $173.00
Current price $173.00
Original price $269.00 - Original price $269.00
Original price
$269.00
$269.00 - $269.00
Current price $269.00

Askar 103APO 1x Full-frame Flattener (103APO-1-FFF)

Askar 103APO 1x Full-frame Flattener The Askar 103 APO comes with three optional premium accessories, a 1.0x flattener, a 0.8x reducer, and a 0.6x ...

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Original price $269.00 - Original price $269.00
Original price
$269.00
$269.00 - $269.00
Current price $269.00
Original price $121.00 - Original price $121.00
Original price
$121.00
$121.00 - $121.00
Current price $121.00

Antares 0.63x Focal Reducer for SCT (SCTFR)

Antares 0.63x Focal Reducer for SCT The Antares 0.63x Focal Reducer for SCT is the standard thread-on F/6.3 4-element fully multicoated reducer use...

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Original price $121.00 - Original price $121.00
Original price
$121.00
$121.00 - $121.00
Current price $121.00
Original price $163.00 - Original price $163.00
Original price
$163.00
$163.00 - $163.00
Current price $163.00

Starizona Field Flattener for SkyWatcher EvoGuide 50ED (EVOFF-V3)

Starizona Field Flattener for SkyWatcher EvoGuide 50ED The new Starizona EvoFF field flattener turns the Skywatcher Evoguide 50 into a sharp, po...

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Original price $163.00 - Original price $163.00
Original price
$163.00
$163.00 - $163.00
Current price $163.00
Original price $550.00 - Original price $550.00
Original price
$550.00
$550.00 - $550.00
Current price $550.00

Celestron Reducer Lens .7x - EdgeHD 800 (94242)

Celestron Reducer Lens .7x - EdgeHD 800 Celestron’s new EdgeHD 800 Reducer Lens .7x  feature a custom 4 element optical design engineered to mainta...

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Original price $550.00 - Original price $550.00
Original price
$550.00
$550.00 - $550.00
Current price $550.00
Original price $253.00 - Original price $253.00
Original price
$253.00
$253.00 - $253.00
Current price $253.00

Celestron 0.63x Reducer-Corrector for SCT (94175)

Celestron Reducer-Corrector Imagine having two telescopes in one — a long focal length instrument for lunar and planetary work and a short focal le...

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Original price $253.00 - Original price $253.00
Original price
$253.00
$253.00 - $253.00
Current price $253.00
Original price $269.00 - Original price $269.00
Original price
$269.00
$269.00 - $269.00
Current price $269.00

Askar 103APO 0.8x Full-Frame Reducer (103APO-08-FFR)

Askar 103APO 0.8x Full-Frame Reducer The 0.8x reducer can bring Askar 103APO's focal ratio down to F5.4. This is a standard reducer with field flat...

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Original price $269.00 - Original price $269.00
Original price
$269.00
$269.00 - $269.00
Current price $269.00
Original price $265.00 - Original price $265.00
Original price
$265.00
$265.00 - $265.00
Current price $265.00

SharpStar 61EDPHⅢ f/4.5 Full-Frame Reducer (SHRD61III)

SharpStar 61EDPHⅢ f/4.5 Full-Frame Reducer The special full-frame reducer of 61EDPH Ⅲ: One end of the thread is M68 × 1, connected to the focuser; ...

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Original price $265.00 - Original price $265.00
Original price
$265.00
$265.00 - $265.00
Current price $265.00
Original price $202.00 - Original price $202.00
Original price
$202.00
$202.00 - $202.00
Current price $202.00

SVBONY SV209 1.0x Flattener for SV550 80F6 M63x1 (W9161A)

SVBONY SV209 1.0x Flattener for SV550 80F6 M63x1  75 filter thread for the use of 2" filters in the camera adapter Maximum working distance from th...

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Original price $202.00 - Original price $202.00
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$202.00
$202.00 - $202.00
Current price $202.00
Original price $54.00 - Original price $54.00
Original price
$54.00
$54.00 - $54.00
Current price $54.00

Antares 0.5x 2" Focal Reducer (FR2-0.5)

Antares 0.5x 2" Focal Reducer Focal reducers can be used either visually or photographically to decrease focal length and increase true field at th...

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Original price $54.00 - Original price $54.00
Original price
$54.00
$54.00 - $54.00
Current price $54.00
Original price $117.00 - Original price $135.00
Original price
$117.00 - $135.00
$117.00 - $135.00
Current price $117.00

Daystar Flat Cap Imaging Diffuser

Daystar Flat Cap Imaging Diffuser The DayStar FlatCap is a Gaussian diffuser that is temporarily installed over the front of your telescope when t...

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Original price $117.00 - Original price $135.00
Original price
$117.00 - $135.00
$117.00 - $135.00
Current price $117.00
Original price $135.00 - Original price $135.00
Original price
$135.00
$135.00 - $135.00
Current price $135.00

Askar 50EDPH 0.84x Reducer (50EDPH-FR)

Askar 50EDPH 0.84x Reducer  The Sharpstar 50EDPH comes with an optional specific 0.84x reducer, which is optimized for the Sharpstar 50EDPH and can...

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Original price $135.00 - Original price $135.00
Original price
$135.00
$135.00 - $135.00
Current price $135.00
Original price $547.00 - Original price $547.00
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$547.00
$547.00 - $547.00
Current price $547.00

Starizona SCT Corrector IV - 0.63X Reducer / Coma Corrector (SCTCORR-4)

Starizona SCT Corrector IV 0.63X Reducer / Coma Corrector Performance   The diagram above shows how the SCT Corrector improves the off-axis spot s...

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Original price $547.00 - Original price $547.00
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$547.00
$547.00 - $547.00
Current price $547.00
Original price $580.00 - Original price $580.00
Original price
$580.00
$580.00 - $580.00
Current price $580.00

Celestron Reducer Lens .7x - EdgeHD 925 (94245)

Celestron Reducer Lens .7x - EdgeHD 925 Celestron’s new EdgeHD 925 Reducer Lens .7x  feature a custom 4-element optical design engineered to mainta...

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Original price $580.00 - Original price $580.00
Original price
$580.00
$580.00 - $580.00
Current price $580.00
Original price $294.00 - Original price $356.00
Original price
$294.00 - $356.00
$294.00 - $356.00
Current price $294.00

Baader 2" Mark III MPCC Multi Purpose Coma Corrector (MPCC)

Baader 2" Mark III MPCC Multi Purpose Coma Corrector Coma corrector for Newton telescopes, that reduces neither the focal length nor the image...

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Original price $294.00 - Original price $356.00
Original price
$294.00 - $356.00
$294.00 - $356.00
Current price $294.00
Original price $20.00 - Original price $20.00
Original price
$20.00
$20.00 - $20.00
Current price $20.00

SVBONY 0.5X Focal Reducer 1.25" (F9115A)

SVBONY 0.5X Focal Reducer 1.25" Fits all standard 1.25" scope eyepieces Its role is to shorten the focal length, increasing the field of view, usua...

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Original price $20.00 - Original price $20.00
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$20.00
$20.00 - $20.00
Current price $20.00
Original price $19.00 - Original price $19.00
Original price
$19.00
$19.00 - $19.00
Current price $19.00

SVBONY 1.25 inch 0.5x Focal Reducer (F9154A)

SVBONY 1.25 inch 0.5x Focal Reducer 0.5x focal reducer cuts the telescope's focal length in 0.5 times of original's to get a wider field of viewFul...

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Original price $19.00 - Original price $19.00
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$19.00
$19.00 - $19.00
Current price $19.00
Original price $245.00
Original price $245.00 - Original price $245.00
Original price $245.00
Current price $232.75
$232.75 - $232.75
Current price $232.75

HoTech SCA Field Flattener 2" (SCA-FFT58)

HoTech SCA Field Flattener 2" High Quality Optics Designed for Refractor Telescopes The HoTech SCA Field Flattener 2" is fully multi-coated on two-...

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Original price $245.00
Original price $245.00 - Original price $245.00
Original price $245.00
Current price $232.75
$232.75 - $232.75
Current price $232.75
Save $12.25 Save $0.00
Original price $336.00 - Original price $336.00
Original price
$336.00
$336.00 - $336.00
Current price $336.00

Askar 0.7x F/3.9 Full Frame Reducer for FRA400/FRA500 (FRA400FR)

Askar 0.7x Full Frame Reducer for FRA400/FRA500 5.6 The Askar new FRA400/FRA500 F3.9 full-frame reducer reduces the telescope’s effective focal rat...

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Original price $336.00 - Original price $336.00
Original price
$336.00
$336.00 - $336.00
Current price $336.00
Original price $253.00
Original price $253.00 - Original price $253.00
Original price $253.00
Current price $180.00
$180.00 - $180.00
Current price $180.00

Celestron 0.63x Reducer-Corrector for SCT Used (94175-U)

Celestron Reducer-Corrector Used Used, in good condition! Imagine having two telescopes in one — a long focal length instrument for lunar and plane...

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Original price $253.00
Original price $253.00 - Original price $253.00
Original price $253.00
Current price $180.00
$180.00 - $180.00
Current price $180.00
Sold out
Original price $404.00 - Original price $404.00
Original price
$404.00
$404.00 - $404.00
Current price $404.00

Askar 103APO 0.6x Full-Frame Reducer (103APO-06-FFR)

Askar 103APO 0.6x Full-Frame Reducer The 0.6x reducer can bring the Askar 103APO's focal ratio down to F4 while also providing field flattening. As...

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Original price $404.00 - Original price $404.00
Original price
$404.00
$404.00 - $404.00
Current price $404.00
Original price $265.00 - Original price $265.00
Original price
$265.00
$265.00 - $265.00
Current price $265.00

SVBONY SV209 Focal Reducer/Field Flattener 0.8x for SV550 122F7 (W9161B)

SVBONY SV209 Focal Reducer/Field Flattener 0.8x for SV550 122F7 This 0.8X focal reducer/field flattener is designed specifically for prime focus as...

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Original price $265.00 - Original price $265.00
Original price
$265.00
$265.00 - $265.00
Current price $265.00
Original price $269.00 - Original price $269.00
Original price
$269.00
$269.00 - $269.00
Current price $269.00

Askar 120APO 1x Full-frame Flattener (120APO-FFF)

Askar 120APO 1x Full-frame Flattener The Askar 120 APO comes with three optional premium accessories, a 1.0x flattener and a 0.8x reducer. Introduc...

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Original price $269.00 - Original price $269.00
Original price
$269.00
$269.00 - $269.00
Current price $269.00
Original price $211.00
Original price $211.00 - Original price $211.00
Original price $211.00
Current price $150.00
$150.00 - $150.00
Current price $150.00

SVBONY ADC 1.25" Atmospheric Dispersion Corrector (W9157B)

SVBONY ADC 1.25" Atmospheric Dispersion Corrector The main function of ADC is to reduce the color change caused by atmospheric dispersion and imp...

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Original price $211.00
Original price $211.00 - Original price $211.00
Original price $211.00
Current price $150.00
$150.00 - $150.00
Current price $150.00
Save $61.00 Save $0.00
Original price $265.00 - Original price $265.00
Original price
$265.00
$265.00 - $265.00
Current price $265.00

SharpStar 61EDPHⅢ Full Frame Flattener (SHFL61III)

SharpStar 61EDPHⅢ Full Frame Flattener 61EDPH Ⅲ is also equipped with a special full-frame flattener, providing users with more options. The flatte...

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Original price $265.00 - Original price $265.00
Original price
$265.00
$265.00 - $265.00
Current price $265.00
Original price $200.00 - Original price $200.00
Original price
$200.00
$200.00 - $200.00
Current price $200.00

Starfield Optics 1.0x Field Flattener (FF-10)

Starfield Optics 1.0x Field Flattener The Starfield 1.0x Field Flattener enhances the imaging capabilities of refractors by eliminating field curva...

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Original price $200.00 - Original price $200.00
Original price
$200.00
$200.00 - $200.00
Current price $200.00
Original price $296.00
Original price $296.00 - Original price $296.00
Original price $296.00
Current price $269.00
$269.00 - $269.00
Current price $269.00

Askar 0.75x Full Frame Reducer for Askar 65PHQ Telescope (65PHQ-FFR)

Askar 0.75x Full Frame Reducer for Askar 65PHQ Telescope Askar’ s new-launched 65PHQ 0.75× full-frame reducer has a quadruplet design. The 0.75× re...

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Original price $296.00
Original price $296.00 - Original price $296.00
Original price $296.00
Current price $269.00
$269.00 - $269.00
Current price $269.00
Save $27.00 Save $0.00
Original price $66.00 - Original price $66.00
Original price
$66.00
$66.00 - $66.00
Current price $66.00

William Optics Longer Adjusting Adapter for FLAT68III, FLAT7A (AD-M80-45-M48)

William Optics Longer Adjusting Adapter for FLAT68III, FLAT7A This adjustable adapter offers a convenient, efficient way to upgrade your WO diagona...

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Original price $66.00 - Original price $66.00
Original price
$66.00
$66.00 - $66.00
Current price $66.00
Original price $886.00
Original price $886.00 - Original price $886.00
Original price $886.00
Current price $780.00
$780.00 - $780.00
Current price $780.00

William Optics Flattener FLAT68III (P-FLAT68III)

William Optics Flattener FLAT68III The William Optics Flattener 68III was made for 6 -7.5 F ratio refractors. This high-quality flattener has been ...

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Original price $886.00
Original price $886.00 - Original price $886.00
Original price $886.00
Current price $780.00
$780.00 - $780.00
Current price $780.00
Save $106.00 Save $0.00
Original price $309.00 - Original price $309.00
Original price
$309.00
$309.00 - $309.00
Current price $309.00

William Optics Flat61 for ZenithStar 61 (P-FLAT61A)

William Optics Flat61 for ZenithStar 61 This flattener is for ZenithStar 61.            Technical Specifications Telescope Side Connection M54x...

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Original price $309.00 - Original price $309.00
Original price
$309.00
$309.00 - $309.00
Current price $309.00
Original price $396.00 - Original price $396.00
Original price
$396.00
$396.00 - $396.00
Current price $396.00

William Optics 0.8x Flattener/Reducer for Fluorostar 91 (P-FLAT6AIII-M92)

William Optics 0.8x Flattener/Reducer Flat6AIII Special Edition For Fluorostar 91 All New Adjustable Flat6AIII with M92 thread adapter for use wi...

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Original price $396.00 - Original price $396.00
Original price
$396.00
$396.00 - $396.00
Current price $396.00
Original price $590.00 - Original price $590.00
Original price
$590.00
$590.00 - $590.00
Current price $590.00

Sky-Watcher Quattro Coma Corrector (S20204)

Sky-Watcher Quattro Coma Corrector Delivers stunning wide-field views with pinpoint stars to the edge of the field. Magnification remains unalte...

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Original price $590.00 - Original price $590.00
Original price
$590.00
$590.00 - $590.00
Current price $590.00
Original price $140.00 - Original price $140.00
Original price
$140.00
$140.00 - $140.00
Current price $140.00

Sky-Watcher Field Flattener for EvoGuide 50 (S20214)

Sky-Watcher Field Flattener for EvoGuide 50 Corrects for field curvature, allowing the Evoguide 50ED and 50DX to be used for astrophotography Thre...

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Original price $140.00 - Original price $140.00
Original price
$140.00
$140.00 - $140.00
Current price $140.00
Original price $410.00 - Original price $410.00
Original price
$410.00
$410.00 - $410.00
Current price $410.00

Starizona Night Owl - .4x SCT Reducer Corrector (SCT-OWL)

Starizona Night Owl - .4x SCT Reducer Corrector *** Currently Unavailable - Working on new regular and HD versions for 2023 *** With the 0.4x foca...

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Original price $410.00 - Original price $410.00
Original price
$410.00
$410.00 - $410.00
Current price $410.00
Original price $200.00 - Original price $200.00
Original price
$200.00
$200.00 - $200.00
Current price $200.00

Starfield Optics 0.8x Reducer Flattener (FFR-08)

Starfield Optics 0.8x Reducer Flattener The Starfield Optics 0.8x Reducer Flattener is a must for anyone that is imaging with a DSLR or dedicated a...

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Original price $200.00 - Original price $200.00
Original price
$200.00
$200.00 - $200.00
Current price $200.00
Original price $560.00 - Original price $560.00
Original price
$560.00
$560.00 - $560.00
Current price $560.00

Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED (S20212)

Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED Compatible with both APS-C and full frame sensors, APS-C (crop sensors) and smaller recommend...

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Original price $560.00 - Original price $560.00
Original price
$560.00
$560.00 - $560.00
Current price $560.00
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