William Optics RedCat 61 WIFD Apo - 61 mm f/4.9 Flatfield Refractor for Astrophotography

William Optics REDCAT 61 mm f/4.9 WIFD Travel Apochromat and Astrograph

The William RecdCat 51 is a successful model and has found its following. Now William offers a more powerful RedCat with 61 mm aperture. The refractor is again designed for mobile astrophotography and is carried by smaller mounts or by stable startrackers.

The apo is aimed at astrophotographers and nature photographers who are looking for a portable and powerful manual telephoto lens. Focusing works internally, as with many telephoto lenses, but via knobs with an additional fine focus knob (dual speed), as with telescopes. The Pezval design offers a very good correction and illumination for all cameras up to full frame format.

The application areas of the RedCat 61 apo:

Astrophotography: With 300 mm focal length and fast f/4.9, short exposure times are possible. The working distance of 55 mm allows the use of all common astro cameras, mirrorless system cameras and DSLR/SLR cameras. The fine focusing allows a precise focus, the rotation the selection of the suitable image section. The supplied Bahtinov mask helps with focusing and is integrated in the objective cap.

Countryside photography and animal photography: The RedCat 61 is also perfect for, for example, photographing animals. Internal focusing allows you to focus without shifting the weight, and therefore also without changing the position. The image field is thus not altered. The image quality will impress you. A photo tripod is necessary for use.