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

So you have the 3" Explore Scientific FFFR507X-00 Field Flattener/.7x reducer and you want to attach it to your 2.5" Hex focuser.  This is the part...

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

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

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

Sky-Watcher EvoGuide 50ED Flattener Highlights Corrects for field curvature, allowing the EvoGuide 50ED and 50DX to be used for astrophotography T...

This field flattener from Explore Scientific is designed to work with refrators from f/5 to f/7. This is a field flattener for refractor-type tele...