The Vixen Coma Corrector 2 R200SS is designed specifically for the R200SS f/4 reflector and does not fit any other scope.
It eliminates coma for both visual observation and photography; it is the "2" because the original version did not have a filter threading. The Coma Corrector 2 accepts 52mm photographic filters to enhance images. Both in observing and in imaging, you will notice the difference that the Coma Corrector makes as the point light sources (such as stars) remain as tight points from the center to the edge of the field.
As fine as the R200SS is as a reflector, it does have some natural off-axis image distortion inherent to the design of a reflector telescope which this device corrects.
Connects to R200SS' Direct Focus Ring, Direct Wide Photo Adapter, & 2" Eyepiece Adapter (#3725) via 56mm diam/0.75mm pitch threading
52mm Photographic filter thread
For imaging and for observing
In the Box
Vixen Optics Coma Corrector 2 for the R200SS f/4 Reflector Telescope