Coma Corrector for Sky-Watcher Newton f/4

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

Features:

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

Advantages:

• Eliminates edge-of-field coma for pinpoint stars and clearer images
• Optimized for f/4 and faster Newtonians (f/5, f/6...)
• Maintains the focal length and magnification of the optical system unchanged
• Improves visual and photographic performance

Compatibility:

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