Corporate In a relatively short time, William Optics has established itself and its products as one of the world leaders in short-tube, highly-portable refractors, and has achieved quality recognition for many accessories such as the well celebrated WO Diagonals.
We plan to keep producing fine instruments both for the entry-level and the top-end segments. In the coming year, you will have many pleasant surprises: on top of a whole new range of larger Apochromatic telescopes, we will begin marketing new accessories and binoculars for all pockets.
From the beginning, the goal was to create the best possible design for an affordable, small, lightweight, and fast Apochromatic refactor for astrophotography.
William offers with the REDCAT61 Astrograph a very well corrected telescope for astrophotography up to full frame format.
Aperture 61 mm / Focal length 300 mm / Focal ratio f/4.9
Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)
Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary
Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm
360° rotation of the camera for the right display window
Focusing via internal focusing (William Internal Focus Design - WIFD) as with telephoto lenses
Tilting option for individual adjustment of the camera sensor to the telescope
Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread
Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery