William Optics Red Cat51 V3 - 51mm f/4.9 Refractor with WIFD - L-RC51RDIII 15X Binoculars Objective Type: Doublet

Objective Type:  Doublet

6X Reducer is easy to install

in order to match the coating performance to the filter curve of each color

5% max Pass 60% min (avg) 436 Block 6

5fps (12 bit @ normal mode) at full resolution

William Optics Red Cat51 V3 - 51mm f/4.9 Refractor with WIFD - L-RC51RDIII 15X Binoculars Objective Type: DoubletDesigned to be the best, affordable, small, lightweight and fast Apochromatic refactor for astrophotography. The unique optical design includes the highest quality glass for the best possible color correction and flat large image circle. The result is a 51 mm objective lens, in a sleek Petzval design, for a full frame image. As seen on the RedCat 61 series, the patented William Optics Internal Focus Design (WIFD) makes its debut on the RedCat 51