William Optics Red Cat61 - 61mm f/4.9 Petzval Refractor - T-C-61RD Motor Drives When imaging

When imaging

Engineered to combine ease of use

Are you looking for a great pair of Celestron Binoculars that are perfect as a child''s first astronomy binocular

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William Optics Red Cat61 - 61mm f/4.9 Petzval Refractor - T-C-61RD Motor Drives When imagingThe William Optics RedCat 61 f 4. 9 Petzval Refractor is a fast, portable quad refractor perfect for astrophotography. Its four elements are arranged in three groups, with FPL 53 glass used in the first group of two, followed by a single central element and a single rear lens that acts as a flattener. This quad optical system produces beautifully flat, high contrast images that are virtually free of chromatic aberration. The RedCat 61 Petzval