Sky-Watcher Coma Corrector for Newton F/4

To remove the coma at the edge of the field

• Optimized for all Sky-Watcher f/4 (and higher) Newtonians
• Provides significantly improved field edge correction
• 4 lenses with one ED FPL51 glass lens
• Increase unchanged

One of the optical distortions observed in Newtonian optical tubes is called coma. It reduces image quality, makes edge details appear blurred and diffuse, and narrows the field of view. This aberration is most evident in fast, high-aperture (f/d) parabolic optical tubes.

To remedy this defect, this 50.8mm corrector, optimized for Newtons f/4 (and more f/5, f/6...), will allow you to obtain point stars at the edge of the field, both visually and in photography, makes the image clearer throughout the field of view and does not affect the focal length or the magnification of the optical system.

Specs:

• 50.8mm (2") front male connector, M48 x 0.75 rear male connector
• 4 lenses with one ED FPL51 glass lens