Flatteners, Reducers & Extenders

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...

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...

This Astro-Tech AT115EDTFF 1X field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT115EDT ED triplet apo...

This Astro-Tech AT130EDTFF 1X field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT130EDT ED triplet apo...

This Astro-Tech AT90FF 1X field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT90CFT or AT90EDX ED tripl...

This Astro-Tech AT80EDTFF 1X field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT80EDT ED triplet apo. ...

This Astro-Tech AT115EDTFFV3 1X field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT115EDT ED triplet a...

This Astro-Tech AT130EDTFFV3 1X field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT130EDT, or AT130EDX...

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

  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...

Explore Scientific’s 3” Field Flattener .7x Focal Reducer is a multi-faceted accessory designed to enhance your astrophotography experiences. The E...

Explore Scientific 2" Field Flattener – Precision Imaging for Fast Refractors If you're a deep-sky astrophotographer using a fast refractor, you’ve...

Sky-Watcher Field Flattener for EvoGuide 50DX – Bring Sharpness to the Corners If you're using the Sky-Watcher EvoGuide 50DX as a wide-field astrog...