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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.

Correctors and Reducers

Filters

Tele Vue Paracorr Type 2 2
Tele Vue Paracorr Type 2 1
$577.00 - $577.00
$577.00
$577.00 - $577.00
$577.00

Tele Vue Paracorr Type 2

TV-VIP-2010
1 in stock

Corrects Coma in Fast Newtonian Reflectors For f-ratios as fast as f/3 1.15x Magnification Factor Adjustable "Tunable Top" for Eyepiece Optimizati...

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$577.00 - $577.00
$577.00
$577.00 - $577.00
$577.00
$278.00 - $278.00
$278.00
$278.00 - $278.00
$278.00

William Optics Adjustable Flat61 for Z61

WO-P-FLAT61A
1 in stock

1.0x Flattener Power Designed for William Optics Zenithstar 61 Full-Frame Sensor Coverage Adjustable Back Focus Mechanism M54 Telescope Thread &am...

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$278.00 - $278.00
$278.00
$278.00 - $278.00
$278.00
$269.00 - $269.00
$269.00
$269.00 - $269.00
$269.00

William Optics Adjustable Flat6AIII

WO-P-FLAT6AIII
2 in stock

0.8x Focal Reducer & Field Flattener Optimized for GT71, GT81, Z81 & Z103 Refractors Illuminates Full-Frame Sensors Adjustable Back Focus ...

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$269.00 - $269.00
$269.00
$269.00 - $269.00
$269.00
$348.00 - $348.00
$348.00
$348.00 - $348.00
$348.00

William Optics Adjustable Flat6AIII for FLT91

WO-P-FLAT6AIII-M92

Dedicated Field Flattener for the William Optics FLT91 Telescope Corrects Field Curvature for Pinpoint Stars Edge-to-Edge Integrated Adjustment Ri...

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$348.00 - $348.00
$348.00
$348.00 - $348.00
$348.00
$278.00 - $278.00
$278.00
$278.00 - $278.00
$278.00

William Optics Adjustable Flat73A for Z73

WO-P-FLAT73A
1 in stock

Designed specifically for the William Optics ZenithStar 73 APO Delivers a 1.0x, perfectly flat field across full-frame sensors Connects to the Z73...

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$278.00 - $278.00
$278.00
$278.00 - $278.00
$278.00
$284.00 - $284.00
$284.00
$284.00 - $284.00
$284.00

William Optics Adjustable Reducer Flattener Flat61R for Z61

WO-P-FLAT61R

Adjustable reducer and field flattener for William Optics Z61 telescope Improves image sharpness and reduces distortion Description ...

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$284.00 - $284.00
$284.00
$284.00 - $284.00
$284.00
$284.00 - $284.00
$284.00
$284.00 - $284.00
$284.00

William Optics Adjustable Reducer Flattener Flat73R for Z73

WO-P-FLAT73R

Reduces focal length by a factor of 0.8x Designed for the William Optics Zenithstar 73 telescope Provides edge-to-edge flat field for full-frame s...

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$284.00 - $284.00
$284.00
$284.00 - $284.00
$284.00
$788.00 - $788.00
$788.00
$788.00 - $788.00
$788.00

William Optics Flattener 68III

WO-P-FLAT68III

1.0x Flattener Power preserves native focal length Corrects field curvature for Full Frame sensors Designed for William Optics FLT132, GT102, and ...

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$788.00 - $788.00
$788.00
$788.00 - $788.00
$788.00
$806.00 - $806.00
$806.00
$806.00 - $806.00
$806.00

William Optics WO x0.72 Reducer Flattener 8

WO-P-FLAT8

Reduces focal ratio by a factor of 0.72x Corrects field curvature for full-frame sensors 3-element, 3-group optical design Connects to telescope v...

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$806.00 - $806.00
$806.00
$806.00 - $806.00
$806.00
$788.00 - $788.00
$788.00
$788.00 - $788.00
$788.00

William Optics x0.8 Reducer Flattener 7A

WO-P-FLAT7A

Reduces focal ratio by a factor of 0.8x Triplet lens design with 3 elements in 3 groups Corrects field curvature for full-frame sensors Designed f...

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$788.00 - $788.00
$788.00
$788.00 - $788.00
$788.00
$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00

ZWO Atmospheric Dispersion Corrector

ZWO-ADC
8 in stock

Corrects atmospheric dispersion for sharper planetary images Uses two H-K9L prisms with 2° deviation angles Features 1/10 wave optical accuracy to...

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$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00
Sold out
$309.00 - $309.00
$309.00
$309.00 - $309.00
$309.00

ZWO FF107/FF130 APO 0.7× Universal Reducer

ZWO-F107130RE

0.7x Focal Reduction Factor Designed for ZWO FF107 & FF130 APO Refractors Triplet Optical Design with 1 ED Element Standard 55mm Back Focus In...

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$309.00 - $309.00
$309.00
$309.00 - $309.00
$309.00
Sold out
$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00

ZWO FF65 APO 0.75× Full Frame Reducer

ZWO-F65RE
Only 1 left!

Reduces FF65 APO focal ratio to f/4.8 0.75x reduction factor for wider fields of view Standard 55mm back focus from the M48 thread Integrated M48x...

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$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00
$249.00 - $249.00
$249.00
$249.00 - $249.00
$249.00

ZWO FF80 APO 0.76× Full Frame Reducer

ZWO-F80RE
Only 1 left!

0.76x focal reduction factor Designed for the ZWO FF80-APO Refractor Triplet optical design with one ED element Standard 55 mm back focus Integrat...

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$249.00 - $249.00
$249.00
$249.00 - $249.00
$249.00