Reducers - Correctors

2" / 1¼" Economy-Reducer suitable for 2" focusers and clamps ...

For clamping of eyepieces with 24.5mm diameter at 1¼ "eyepiece holder...

0.5x focal reduction - 1.25" - for observation & photography...

0.5x Reducer - 2" - for visual observation & photography - focal reduction...

The Levenhuk Ra f/4 Newtonian coma corrector is compatible with Newtonian reflectors of any brand...

The Baader Glasspath Compensator/Corrector may be useful for binoviewing with refractor or Newtonian telescopes. Unlike...

The Baader Glasspath Compensator/Corrector may be useful for binoviewing with refractor or Newtonian telescopes. Unlike...

The Baader Glasspath Compensator/Corrector may be useful for binoviewing with refractor or Newtonian telescopes. Unlike...

Superb quality, non-focal reducing Field Flattener optimised for DSLR imaging on refractor telescopes with focal ratio...

Your telescope's focuser is used to compensate for your near- or far-sightedness; DIOPTRX™ compensates for your astigmat...

This combination focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 1...

The Multi Purpose Coma Corrector Mark III eliminates coma across the full photographic field without manipulating the fo...

The Flattener corrects the field of view and illuminates it up to full format cameras...

Coma corrector for Newton telescopes that neither reduces the focal length nor the image field of your telescope...

Optimized for all Sky-Watcher fast-ratio f/5 Newtonian Reflectors /Dobsonians, with 2” focuser. Delivers stunning wide-f...

TS Optics Reducer and Corrector for astrophotography through APO refractor telescopes...

ZWO has released a brand-new FF65APO 0.75× full frame reducer with a four-element optical design. It has a reduction fac...

The focal reducer Alan Gee Mark II increases the aperture ratio from f/10 to f/5.9 and reduces the necessary exposure ti...

The Flattener corrects the field of view and illuminates it up to full format cameras...

Increase field of view while decreasing the exposure time with the Vixen VC200L f/6.4 Focal Reducer and dramatically inc...