Field Flatteners

Looking to make your Astro-Tech (or variant) scope faster and flatter for photography? Then the .8x reducer/flattener is exactly what your are loo...

Looking to make your Astro-Tech (or variant) scope faster and flatter for photography? Then the .8x reducer/flattener is exactly what your are loo...

New for August 2021, thread on adatper tops to choose between 42mm T-threads and 48mm T-threads. Named a Sky & Telescope Hot Product of the Yea...

You've got 115mm of ED triplet glass pointed at the sky. The AT115EDT's optics deliver clean color correction — three FK-61 elements working togeth...

This thread on field flattener for the AT60ED is a must for full frame photography.The Astro-Tech 60ED 1x flattener easily threads on to the focuse...

You've got 130mm of ED triplet glass pointed at the sky. The AT130EDT's optics deliver clean color correction — three FK-61 elements working togeth...

The AT102EDL is a versatile doublet APO at 714mm f/7 — plenty of focal length for mid-range targets and sharp enough for visual work on any given n...

The AT115EDT has become one of the most popular imaging refractors we sell — 115mm of FK-61 triplet glass at 805mm f/7, enough aperture and focal l...

The AT90CFT and AT90EDX are excellent visual scopes at 540mm f/6, but if you're imaging through either one, you already know the two things an f/6 ...

The AT90EDX and AT90CFT are triplet APO refractors with essentially perfect on-axis optics — guaranteed .95 Strehl or higher. But point a camera at...

The AT125EDL is a serious visual scope at 975mm f/7.8, but when you turn it toward astrophotography, two things work against you: the curved field ...

The AT130EDT is one of the more capable imaging refractors in our lineup — 130mm of FK-61 triplet glass at 910mm f/7, sharp enough to resolve detai...

Astro-Tech AT115EDTRFv3 0.8× Reducer/Field Flattener The AT115EDT is a triplet apochromat — three air-spaced elements that bring color under tight ...

The Astro-Tech AT152FF 0.8x focal reducer/field flattener is designed specifically for prime focus astrophotography with the AT152EDT triplet refra...

There's a specific kind of frustration that comes from imaging with a refractor and reviewing your frames the next morning. The core of M33 is exac...

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

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 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...

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...

  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...

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...