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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Askar Field Flatteners, Reducers & Coma Correctors

Askar field flatteners and reducers are matched to specific Askar telescopes to flatten the field or shorten the focal length for imaging. The range includes 1x flatteners and 0.8x reducers for the 103APO, 120APO, 140APO, 160APO and 185APO, reducers for the PHQ, F and FRA lines, and a 0.85x reducer for the 80ED.

The Sharpstar 3" 0.85x MPCC (CRC3085) adds a coma corrector with a slight reduction. Each corrector is designed for one optical system, so choose the model named for your tube.

Filters

$274.00 - $274.00
$274.00
$274.00 - $274.00
$274.00

Askar 2.5" F/3.9 Full Frame Reducer for FRA400 and FRA500

ASK-ASKAR7256RD
2 in stock

Reduces focal ratio to a fast f/3.9 0.7x reduction factor 44mm image circle fully illuminates full-frame sensors Standard 55mm back focus for easy...

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$274.00 - $274.00
$274.00
$274.00 - $274.00
$274.00
$219.00 - $219.00
$219.00
$219.00 - $219.00
$219.00

Askar 1x Field Flattener for 103APO

ASK-ASKFL10310
1 in stock

Corrects field curvature and coma for the Askar 103APO Maintains the native 700.4mm focal length and f/6.8 ratio Triplet optical design delivers s...

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$219.00 - $219.00
$219.00
$219.00 - $219.00
$219.00
$384.00 - $384.00
$384.00
$384.00 - $384.00
$384.00

Askar 0.7x Universal Reducer for 107PHQ/130PHQ/151PHQ

ASK-ASF107130RE
1 in stock

0.7x Focal Reduction Factor 44mm Full-Frame Image Circle Maintains a Standard 55mm Backfocus 3-Element Air-Spaced Design with ED Glass Optimized f...

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$384.00 - $384.00
$384.00
$384.00 - $384.00
$384.00
$208.00 - $208.00
$208.00
$208.00 - $208.00
$208.00

Askar 0.75x 71F Reducer

ASK-ASKAR71R
1 in stock

0.75x Reduction Factor Transforms Askar 71F to f/5.2 New Focal Length: 369mm Standard 55mm Back Focus Triplet Optical Design Description FAQ Sp...

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$208.00 - $208.00
$208.00
$208.00 - $208.00
$208.00
$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00

Askar 0.6x Reducer for 103APO

ASK-ASKRE10306
3 in stock

Transforms Askar 103APO to an f/4.08, 420.24mm focal length system Quadruplet optical design provides field flattening for full-frame sensors Stan...

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$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00
$214.71 - $214.71
$214.71
$214.71 - $214.71
$214.71

Askar 1x Field Flattener for 120APO

ASK-ASKFL12010

Designed specifically for the Askar 120APO Telescope 1x Magnification Factor Triplet Optical Design Maintains Native f/7 Focal Ratio Standard 55mm...

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$214.71 - $214.71
$214.71
$214.71 - $214.71
$214.71
$214.71 - $214.71
$214.71
$214.71 - $214.71
$214.71

Askar 0.8x Reducer for 120APO

ASK-ASKRE12008

Reduces Askar 120APO to a fast f/5.6 focal ratio Shortens focal length to 672mm for wider fields of view Triplet optical design provides field fla...

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$214.71 - $214.71
$214.71
$214.71 - $214.71
$214.71
$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00

Askar 0.8x Reducer for 140APO

ASK-ASKAR140R
1 in stock

Reduces 140APO Focal Ratio to f/5.6 Shortens 140APO Focal Length to 784mm Standard 55mm Back Focus Requirement Triplet Optical Design with Field F...

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$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00
$439.00 - $439.00
$439.00
$439.00 - $439.00
$439.00

Askar 3" F/3.9 Full Frame Reducer for FRA600

ASK-ASKAR656RD

Reduces FRA600 focal ratio to F/3.9 Designed for full-frame sensors Maintains a standard 55mm backfocus Features integrated M48 (2-inch) filter th...

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$439.00 - $439.00
$439.00
$439.00 - $439.00
$439.00
$263.00 - $263.00
$263.00
$263.00 - $263.00
$263.00

Askar 0.76x Reducer for 80PHQ

ASK-ASKAR80R

0.76x reduction factor specifically for the Askar 80PHQ Reduces focal ratio from f/7.5 to a faster f/5.7 Creates a new focal length of 456mm Gener...

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$263.00 - $263.00
$263.00
$263.00 - $263.00
$263.00
$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00

Askar 1x Field Flattener for 140APO

ASK-ASKAR140FL
1 in stock

Engineered for the Askar 140APO Triplet Refractor 1x Flattener Preserves Native f/7 Focal Ratio Corrects a 44mm Full-Frame Image Circle Standard 5...

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$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00
$219.00 - $219.00
$219.00
$219.00 - $219.00
$219.00

Askar 0.8x Reducer for 103APO

ASK-ASKRE10308

Reduces telescope focal ratio to a faster f/5.44 Shortens 103APO focal length to 560.32mm for wider fields Triplet optical design provides field f...

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$219.00 - $219.00
$219.00
$219.00 - $219.00
$219.00
Askar 91F 0.75x Reducer
$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00

Askar 91F 0.75x Reducer

ASK-ASKAR91R

Reduces focal ratio to a fast f/5 0.75x reduction factor for wider fields of view Triplet optical design provides field-flattening correction Stan...

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$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00
Askar 60F 0.75x Reducer
$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00

Askar 60F 0.75x Reducer

ASK-ASKAR60R

0.75x Focal Reduction Reduces Focal Length to 311mm Creates a Fast f/5.1 Focal Ratio 44mm Full-Frame Image Circle Standard 55mm Back Focus Triplet...

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$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00
Askar 131F 0.74× Reducer
$299.00 - $299.00
$299.00
$299.00 - $299.00
$299.00

Askar 131F 0.74× Reducer

ASK-ASKAR131FRD

Reduces telescope focal ratio to f/5.6 Achieves a 733.6mm final focal length Triplet optical design for field flattening Standard 55mm back focus ...

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$299.00 - $299.00
$299.00
$299.00 - $299.00
$299.00
Askar 185APO 0.8x Full-frame Reducer
$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00

Askar 185APO 0.8x Full-frame Reducer

ASK-ASKRE18508
1 in stock

Reduces Askar 185APO to f/5.6 Resulting Focal Length: 1036mm 4-Element Quadruplet Optical Design Standard 55mm Back Focus Illuminates Full-Frame S...

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$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00
Askar 185APO 1x Full-frame Flattener
$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00

Askar 185APO 1x Full-frame Flattener

ASK-ASKFL18510
1 in stock

Maintains Native f/7 Focal Ratio Maintains Native 1295mm Focal Length Triplet Optical Design Standard 55mm Back Focus Includes M68, M54 & M48 ...

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$329.00 - $329.00
$329.00
$329.00 - $329.00
$329.00
Askar 111F 0.74× Reducer
$299.00 - $299.00
$299.00
$299.00 - $299.00
$299.00

Askar 111F 0.74× Reducer

ASK-ASAPO111R
1 in stock

Reduces Telescope Focal Ratio to f/5.1 Creates a 566mm Focal Length Imaging System Triplet Optical Design for Field Flattening Provides Standard 5...

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$299.00 - $299.00
$299.00
$299.00 - $299.00
$299.00