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Flatteners, Reducers & Correctors

Field flatteners, focal reducers, extenders and coma correctors — matched to the telescope they were made for. Part of Telescopes.

138 products

Showing 97 - 120 of 138 products

Showing 97 - 120 of 138 products
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Starfield - 0.8x Reducer and Field FlattenerStarfield - 0.8x Reducer and Field Flattener
Starfield Starfield - 0.8x Reducer and Field Flattener
$199.99 CAD
src:https://takahashius.com/media/catalog/product/s/c/screenshot_2026-08-26_at_2.00.51_pm.pngsrc:https://takahashius.com/media/catalog/product/s/c/screenshot_2026-08-26_at_2.01.10_pm.png
Takahashi Takahashi AUX Ring 0.7x 645 Reducer for TOA-130/FSQ-130ED
$201.00 CAD
Starfield 1.0x Field FlattenerStarfield 1.0x Field Flattener
Starfield Starfield 1.0x Field Flattener
$194.00 CAD
Explore Scientific 3x 1.25" Field Extender
Explore Scientific Explore Scientific 3x 1.25-Inch Telecentric Focal Extender
$196.95 CAD
Explore Scientific Field Flattener f/5 to f/7Explore Scientific Field Flattener f/5 to f/7
Explore Scientific Explore Scientific Field Flattener f/5 to f/7
$196.95 CAD
Explore Scientific ES-FR0.8x focal reducer, a short black anodised barrel with threaded ends, shown uprightSide view of the Explore Scientific 0.8x focal reducer showing its threaded camera-side connection
Explore Scientific Explore Scientific 0.8x Focal Reducer for f/5 to f/7 Refractors with 55mm Back Spacing
$196.95 CAD
Explore Scientific HR Variable Coma Corrector, a black 2-inch cylindrical corrector standing uprightSide view of the HR Variable Coma Corrector showing the marked spacer used to set the working distance
Explore Scientific Explore Scientific HR Variable Coma Corrector 2-inch, NO Camera Adapters Included
$281.95 CAD
Explores Scientific 2x 1.25" Field Extender
Explore Scientific Explore Scientific 2x 1.25-Inch Telecentric Focal Extender
$168.95 CAD
Field Flattener for EvoGuide 50
Sky-Watcher Field Flattener for EvoGuide 50
$160.00 CAD
Starfield Coma CorrectorStarfield Coma Corrector
Starfield Starfield Coma Corrector
$160.00 CAD
Takahashi AUX Ring for 645 Reducer medium-format imaging train adapter
Takahashi Takahashi AUX Ring for 645 Reducer
$157.00 CAD
Takahashi Extender-C2X focal length extender for FS-60CB, FC-76D and FC-100D astrophotographyTakahashi Extender-C2X side profile
Takahashi Takahashi Extender-C2X Extender
$154.00 CAD
Takahashi 645 Reducer adapter ring for medium-format 645 imaging train
Takahashi Takahashi 645 Reducer Adapter Ring
$148.00 CAD
Takahashi RD Aux Ring Extender M72 extension ring for Mewlon-300CR and 300CRS astrophotography trainTakahashi RD Aux Ring Extender M72 extension ring side profile
Takahashi Takahashi RD Aux Ring Extender for Mewlon-300
$144.00 CAD
Explore Scientific Adapter for FFFR507X-00 to 2.5" Hex Focuser
Explore Scientific Explore Scientific Adapter for FFFR507X-00 0.7x Corrector to 2.5-Inch Hex Focuser
$140.95 CAD
Explore Scientific 2" Adapter for FFFR507X-00
Explore Scientific Explore Scientific 2-inch Adapter for FFFR507X-00 Field Flattener Focal Reducer
$140.95 CAD
Takahashi TOA-130 25mm spacer ring for 67FL Flattener large-format astrophotography system
Takahashi Takahashi TOA-130 25mm Spacer Ring for 67 Flattener
$127.00 CAD
Baader 2" to 1¼" ClickLock ReducerBaader 2" to 1¼" ClickLock Reducer
Baader Planetarium Baader 2" to 1¼" ClickLock Reducer
$112.00 CAD
William Optics 4 inch extender adapter for flattener spacing
William Optics William Optics 4 inch Extender
$111.99 CAD
F/6.3 focal reducer for F/10 SCT, visual or imaging
Antares F/6.3 focal reducer for F/10 SCT, visual or imaging
$106.95 CAD
Antares 0.7x 2" focal reducer
Antares Antares 0.7x 2" focal reducer
$106.92 CAD
William Optics 54mm flattener extender for GT81 WIFD
William Optics William Optics 54mm Flattener Extender for GT81 WIFD
$95.20 CAD
William Optics Flat4 draw tube adapter for flattener compatibility
William Optics William Optics Flat4 Draw Tube Adapter
$88.00 CAD
William Optics 2 inch push-in nosepiece to M63 adapter for FLAT 6AIII
William Optics William Optics 2 inch Push-In Nosepiece to M63 Adapter for FLAT 6AIII
$82.60 CAD