The SharpStar 1x MPCC 2" Coma Corrector is a full-frame quadruplet air-spaced corrector for Newtonian reflectors, with an extra-low dispersion lens to control chromatic aberration and a backfocus of 55mm.
Suitable for 150mm-600mm reflectors with a focal ratio of f/3 -f/6.
Chromatic aberration 1x MPCC Coma Corrector Spot diagram 1x MPCC Coma Corrector
||55 mm from baffle ring|
||50.8 mm (2")|
|Optical coatings||Fully multi-coated|
Brought this for a modified 10" f5 Newt and my ASI294MC camera (19x13mm sensor size). Out of the box plug in and default 55mm back spacing worked flawlessly. I have used it with backspacing between 55mm and 57mm (with filters) without any noticeable changes in the quality . I haven't yet detected any coma within the field of view I have access to on my camera. Image here is a completely unedited live stack (166x 30sec live) - full frame of the 294MCP without any crop or modification (just auto stretch by ASI Studio)