A group created on 12/23/2020, owned by AstroNikko, categorized as Specific to certain equipment.

William Optics CAT Series

Images captured with the William Optics CAT Series 51/250mm and 71/350mm Petzval APO refractors.

Including, but not limited to:

- RedCat 71 (Red and Black)
- RedCat 51/51Ix/51II (Red and Black)
- SpaceCat 51, Limited Edition (Space Gray and Black)
- WhiteCat 51, Limited Edition (White, Black, and Gold)
- NightCat 51, OPT Special Edition (Black and Blue)