Skywatcher 0.9x Newtonian Coma Corrector
Skywatcher 0.9x Coma Corrector
Suitable for use with Newtonian reflector telescopes with f-ratios f4-f6 but is optimised for the new Sky-Watcher Explorer DS f/5 telescopes with 2-inch focuser.
Also acts as a 0.9x reducer, f5 Newtonian becomes f4.5 and f4 becomes f3.6.
Supplied complete with necessary adaptors for visual use with 2" eyepieces. To use with 1.25" eyepieces you will need a suitable 2" to 1.25" adaptor.
For imaging use with a DSLR camera a Sky-Watcher DSLR-M48 Ring Adapter is also required.
Threaded for 2" filters.
Requires 55mm back focus.