Field Flatteners & Coma Correctors

Superb quality, non-focal reducing Field Flattener optimised for DSLR imaging on refractor telescopes with focal ratios of between f/5.5 to f6.0. Will also provide much improved results on refractors with focal lengths narrowly outside this optimised f/range.

For Vixen R200Ss Newtonian reflector telescope. Reduces coma aberration around the edge of field of view. The focal length is not changed. Fits directly into the focuser drawtube.

This adapter is specifically designed to use the SBIG STL-11000 CCD cameras together with our TMB-designed FLT field flattener.

Explore Scientific MPCC Field Flattener with Canon EOS T2. Custom designed to be used with the Explore and Meade APOs. Includes a Canon fitting as standard.

The image plane of many telescopes is not plane, but curved. This results in a picture that has its optimal focus only in the center of the field of view - the edge of the field is out of focus and thus unsharp.

An optically-matched M48-fitting doublet field flattener for Skywatcher's Esprit 80 ED PRO triplet refractor.

Optimised for all Sky-Watcher fast-ratio f/5 Newtonian Reflectors / Dobsonians, with 2” focuser. Delivers stunning wide-field views with pinpoint stars to the edge of the field. Magnification remains unaltered.

The Baader Mark-III Coma Corrector is the long awaited replacement for the highly regarded Baader MPCC Coma Corrector.

Baader Planetarium Rowe Coma Corrector - Use this fantastic product to correct the Coma that is inherent in fast Newtonian imaging.

An optically-matched M48-fitting doublet field flattener for Skywatcher's Esprit 100 ED PRO triplet refractor.

Introducing the brand new RVO Horizon® 1.0x Field Flattener with integrated rotator to suit the RVO Horizon® 72 ED refractor. This high quality flattener will provide a beautifully flat field across the full width which is ideal for widefield imaging.

Brand new adjustable field flattener for the William Optics Zenithstar 61 OTA. This is a brand new 2019 item which is now in stock at Rother Valley Optics.

Brand new adjustable field flattener for the William Optics Zenithstar 73 OTA. This is a brand new 2019 item which is now in stock at Rother Valley Optics.

This very elegant 2" reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics F/6 to F7.5 ratio refactors. WO Flat 6Alll will provide good illumination and flat field across 97% of full frame sized sensors.

Designed for serious Astro-Imagers. Optimised for the Evostar-72ED PRO, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction.

An optically-matched M48-fitting doublet field flattener for Sky-Watcher's Esprit 120 ED PRO triplet refractor.