Field Reducers and Flatteners at BuyTelescopes.com

T2-15 - Baader Planetarium Reducer 2"/1.25" includes T-2 thread, permits you convert your 2" focuser for use with 1¼” eyepieces and accessories.

$49.00

Threaded adapter for Stellarvue SFF7-21

Convert your SFF7-21 into a threaded field flattener that works with the 3” Feather Touch focuser.

$69.00

Stellarvue SSF3-SVA threaded adapter for SFF7-21

Convert your SFF7-21 into a threaded field flattener that works with the new SV 3” dual speed focuser.

$69.00

Optec (CCD Photo Accessories) WideField-FLI 0.5X Telecompressor Lens

Optec (CCD Photographic Accessories) WideField-FLI 0.5X Telecompressor Lens.
Special WideField f/5 telecompressor designed to fit directly into the FLI camera faceplate using a 2" 24tpi thread.

$95.00

Meade Series 4000 f/6.3 Focal Reducer

07545 - Threaded on to the telescope’s rear cell in front of the #62 T-Adapter or Off-Axis Guider, and the camera body, the f/6.3 Focal Reducer reduces the main telescope’s focal ratio by a factor of 0.63 (e.g. from f/10 to f/6.3), thereby reducing photographic exposure times by about 50%.

$99.99

Astro-Tech 2" Flattener for f/6-f/8 Scopes

The Astro-Tech photographic field flattener reduces the normal field curvature inherent in all refractors to provide you with images that are sharply focused out to the very corners of your DSLR or large format CCD imager frame. Also works surprisingly well with the 6”, 8”, and 10” Astro-Tech RC's.

$150.00

Astro-Physics CCD Telecompressor (.67)

Astro-Physics CCD Telecompressor for SBIG CCD Cameras (.67).
Clear aperture is 1.75". Compression ratio is 0.67x with SBIG ST7/8/10 + Color Filter Wheel installed, 0.75x without the Color Filter Wheel. Suitable for telescopes with focal lengths of f7 to f18 including Maksutov-Cassegrains, Schmidt-Cassegrains, Ritchey-Cretiens, and refractors.

$165.00

Optec NextGEN MAXfield 0.33X Telecompressor Lens

Optic NextGEN MAXfield 0.33X Telecompressor Lens.

$245.00

Borg DX 0.85X Focal Reducer for Digital Imagers

DX 0.85X Focal Reducer for Digital Imagers

$263.00

Stellarvue Field Flattener for Astrophotography

This system will flatten the field photographically to increase the in-focus image circle. Plugs directly into the focuser and the camera mounts to it using a standard photographic t-thread. Works with f-6 - f-8 telescopes and is optimized for the f-7 light cone.

$265.00

Photographic Field Flattener for the Stellarvue f-7 Refractors

$Picture of Photographic Field Flattener for the Stellarvue f-7 Refractors$

This is the most popular modular flattener designed for all Stellarvue telescopes that operate at a certain focal ratio. The lens inserts into the 2” focuser and uses a tapered insert tube to more accurately seat the flattener in the focuser.

$265.00

Photographic field flattener for the Stellarvue f6 refractors

$Picture of Photographic field flattener for the Stellarvue f6 refractors$

This field flattener is designed to work with the Stellarvue f-6 optical systems. This includes the Stellarvue SV70ED, SV80ST2 and SV80S.

$265.00

Optec NextGEN WideField 0.5X Telecompressor Lens

The Optec NGW (Next Generation WideField) telecompressor increases the effective speed of the Meade and Celestron Schmidt-Cassegrain telescopes from f/10 to f/5. This 1/2 times reduction in focal length allows for 4 times greater field area and 1/4 reduction in exposure time for extended surface objects such as bright nebulae.

$275.00

Takahashi FC-76D Flattener F/7.8

New field flattner for the FC-76D refractor.

$284.99

TeleVue 0.8x Reducer for NP and NPis Series Telescopes

0.8x reducer for NP and NPis series telescopes. For up to 43mm diagonal formats, it's constructed to fit both 2" focuser NP scopes (RAD-1074 required) and the threaded NPis accessories on the input end. Requires CWT-1070, STL-1071 or TRG-1072 to connect to camera.

$288.99

TeleVue 0.8X Reducer/Flattener for Pronto/TV-76/TV-85

0.8X Reducer/Flattener for Pronto, TV-76 and TV-85 refractors.

$293.99

Stellarvue SFF7-3SV field flattener

Dedicated APS sized f-7 field flattener for use with the new Stellarvue 3” dual speed focuser.

$295.00

TeleVue 0.8x Reducer / Flattener for TV-102 Telescopes

0.8x reducer / flattener for TV-102 telescopes. For up to 43mm diagonal formats, it's constructed to fit both the standard 2" focuser of the TV-102 and the threaded TV-102iis accessories on the input end. Requires CWT-1070, STL-1071 or TRG-1072 to connect to camera.

$313.99

Stellarvue Field Flattener for 3" Feather Touch Focuser

This unit threads into the rear of the Feather Touch 3” focuser. Use this with SV telescopes made with the 3” Feather Touch focuser.

$319.00

Stellarvue Large Chip Field Flattener for 2.5” Stellarvue Focuser

This flattener is made for our f-7 refractors.

$329.00