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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.

SharpStar Optics Field Flatteners, Reducers & Coma Correctors

SharpStar Optics correctors complete a SharpStar refractor or reflector for imaging. Dedicated focal reducers exist for the 50EDPH (0.84x), 61, 76 and 94EDPH (0.8x) and the 140PH (0.74x), shortening the focal length while flattening the field. General-purpose field flatteners come in 2" and 2.5" sizes for other refractors.

For Newtonians, the MPCC Full Frame coma corrector gives round stars to the edge of large sensors. Match each corrector to its tube and back focus.

Filters

$219.00 - $219.00
$219.00
$219.00 - $219.00
$219.00

SharpStar 61EDPH 0.8x Focal Reducer

SSO-SHRD61

Converts the SharpStar 61EDPH to a fast f/4.5 astrograph Provides a 44mm image circle for full-frame sensor coverage Three-element air-spaced opti...

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$219.00 - $219.00
$219.00
$219.00 - $219.00
$219.00
$305.00 - $305.00
$305.00
$305.00 - $305.00
$305.00

SharpStar MPCC Full Frame Coma Corrector

SSO-SH1XMPCC
2 in stock

Corrects coma in Newtonian reflectors from 150mm to 600mm aperture Optimized for fast focal ratios from f/3 to f/6 Provides a 44mm image circle fo...

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$305.00 - $305.00
$305.00
$305.00 - $305.00
$305.00
$195.00 - $195.00
$195.00
$195.00 - $195.00
$195.00

SharpStar Field Flattener - 2.5"

SSO-FF25

Designed to fully illuminate full frame sensor on most APO refractors. The SharpStar 2.5" field flattener has a M69 male thread to connect the came...

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$195.00 - $195.00
$195.00
$195.00 - $195.00
$195.00
$355.00 - $355.00
$355.00
$355.00 - $355.00
$355.00

SharpStar 94EDPH 0.8x Focal Reducer

SSO-94EDPHFR
1 in stock

0.8x Focal Reduction for SharpStar 94EDPH Creates a Fast f/4.4 Optical System 4-Element Optical Design 50mm Corrected Image Circle Standard 55mm B...

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$355.00 - $355.00
$355.00
$355.00 - $355.00
$355.00
$265.00 - $265.00
$265.00
$265.00 - $265.00
$265.00

SharpStar 76EDPH 0.8x Focal Reducer

SSO-76EDPHFR

Converts 76EDPH to a fast f/4.5 focal ratio Produces a 44mm image circle for full-frame sensors Standard 55mm back focus for easy camera integrati...

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$265.00 - $265.00
$265.00
$265.00 - $265.00
$265.00
$109.00 - $109.00
$109.00
$109.00 - $109.00
$109.00

SharpStar 50EDPH 0.84x Focal Reducer

SSO-SHREDU50

Reduces telescope focal ratio to f/4.6 Converts focal length to 230mm Quadruplet optical design with field flattening Standard 55mm back focus req...

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$109.00 - $109.00
$109.00
$109.00 - $109.00
$109.00
$439.00 - $439.00
$439.00
$439.00 - $439.00
$439.00

SharpStar 140PH 0.74x Focal Reducer

SSO-140PHFR

Reduces focal ratio to f/4.8 0.74x reduction factor 3-element optical design 44mm corrected image circle Standard 55mm back focus Description F...

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$439.00 - $439.00
$439.00
$439.00 - $439.00
$439.00
$120.00 - $120.00
$120.00
$120.00 - $120.00
$120.00

SharpStar Field Flattener - 2"

SSO-FF2

Designed to fully illuminate APS-C sensor on most APO refractors. The SharpStar 2" field flattener has a M42x0.74 male thread to connect the camera...

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$120.00 - $120.00
$120.00
$120.00 - $120.00
$120.00