Flatteners, Reducers & Extenders

Astro-Tech AT130EDTRFv3 0.8× Reducer/Field Flattener A triplet apochromat like the AT130EDT does one thing very well: it controls color. Three elem...

The AT80EDT is one of our most popular grab-and-go imaging refractors — 80mm of FK-61 triplet glass at 480mm f/6, compact enough for airline travel...

Astro-Tech AT130EDTFFv3 1× Field Flattener Sometimes you don't want to speed up your system. You want to sharpen it. The AT130EDT is a 910mm f/7 tr...

The EDQ series scopes are designed with imaging in mind. The quad-element optical system builds field correction right into the telescope — no sepa...

This focal reducer and field flattener consists of a four-element multicoated 40mm lens in a metal cell. It threads onto the rear cell of 5" to 16"...

This Celestron EdgeHD 0.7x focal reducer makes your 14" f/11 EdgeHD telescope into a full f-stop faster f/7.7, increasing your photographic field o...

This 0.8X reducer/field flattener assembly converts the 600mm focal length f/7 TeleVue TV-85 refractor into a 480mm f/5.6 telephoto lens for faster...

This auxiliary multicoated lens system sharpens 35mm and large format CCD images taken through the TeleVue NP-101is and NP-127is imaging system ref...

The AT80EDLRF is the dedicated 0.8× reducer and field flattener for the Astro-Tech AT80EDL f/7 doublet APO refractor. It does two things at once: i...

.85x Reduction For Your Sky-Watcher Pro 100 ED APO Refractor Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring So you wa...

If you are needing a faster version of your ZWO FF65APO Quad, this reducer will take your f/ratio from f/6.4 to f/4.8. ZWO has released a brand-new...

  Explore Scientific Adapter for 3" Field Flattener / 0.7x Reducer to Attach to 2.5" Hex Focuser If you're using the Explore Scientific 2.5" Hex Fo...

.85x Reduction For Your Sky-Watcher Pro 80 ED APO Refractor Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring So you wan...

.85x Reduction For Your Sky-Watcher Pro 120 ED APO Refractor and 150ED Refractor. Helps Correct Distortion Out to the Edge of the Field Requires a ...

If you are needing a faster version of your ZWO FF107APO or FF130APO, this reducer will get you there. ZWO has released a new 3-inch 0.7× full fram...

A reducer has the optical property of decreasing the effective focal length of a telescope. This results in a wider-field and faster imaging time o...

The TOA-35 Reducer is a 0.7X reducer for use with the TSA-120, TOA-130 and TOA-150 telescopes.  The reducer consists of 4 elements in 3 groups and ...

The TOA-35 Reducer is a 0.7X reducer for use with the TSA-120, TOA-130 and TOA-150 telescopes.  The reducer consists of 4 elements in 3 groups and ...

If you are needing a faster version of your ZWO FF80APO Quad, this reducer will take your f/ratio from f/7.5 to f/5.7. ZWO has also released a new ...

This TeleVue 0.8x magnification multicoated auxiliary lens system reduces by 20% the focal length of the TeleVue TV-102iis and the TV-102 and other...

The Sky Rover 90 GPS continues the premium legacy of the GPS lineup. Ninety millimeters of Super ED triplet glass at f/6, delivering 540mm of focal...