An ideal visual and photographic tool for fast Dobsonian optical tube assemblies (OTAs), the Alpine Astronomical Baader 2" Mark III Multi-Purpose Coma Corrector (MPCC) improves your views and image quality on any OTA with a removable 2" collar. It eliminates distracting off-axis comas and ensures stars remain tack sharp all the way to the edges—without adding any magnification, reducing the focal length, or narrowing the field of view.
The MPCC is optimized for fast f/3.5 to f/6 Dobs and will transmit enough light to completely cover today's large DSLR camera and CCD imager sensors without vignetting or requiring addition back focus distance. Phantom Group Multi-Coatings maximize transmission through the visual bands while blocking ultraviolet (UV) and infrared (IR) wavelengths to prevent ghosting by sensors that are sensitive to them. The MPCC has standard 2" eyepiece filter threads and a second set of male threads that match their T-2 Astro modular accessory system to give users access to a wide assortment of adapters and rings that allow the corrector to be attached to gear from eyepiece holders to imagers with relative ease.