Sky-Watcher Coma Corrector for Newton f/4

The Sky-Watcher coma corrector for Newton f/4 is designed to eliminate coma at the edge of the field, improving the image quality of your astronomical observations and photographs. Optimized for Newton telescopes at f/4 and above, this corrector provides significantly improved edge-of-field correction without changing magnification.

Features:

• Threads: 50.8mm (2") male front, M48x0.75 male rear
• Optics: 4 lenses with one ED FPL51 glass lens
• Backfocus: 55mm

Advantages:

• Eliminates coma at the edge of the field for pinpoint stars and a clearer image
• Optimized for Newtons at f/4 and above (f/5, f/6...)
• Keeps the focal length and magnification of the optical system unchanged
• Improves visual and photography performance

Compatibility:

• For photography, requires a dedicated M48 wide field T ring (Sony SW0187, Nikon SW0188, Canon SW0189)