Antares M42 Variable Extender Camera Adapter - TEXT-42 Telescope Accessory Cases Latitude adjustment range: 3º-65º

Latitude adjustment range:    3º-65º

but slightly to either side

25" (32mm) Focal Length: 2

It results in about 3X brighter diffraction spike images than the traditional metal material masks

Celestron Advanced VX 8" Rowe-Ackermann 800 Schmidt Astrograph

Antares M42 Variable Extender Camera Adapter - TEXT-42 Telescope Accessory Cases Latitude adjustment range: 3º-65ºAntares Variable M42 Extender Product Highlights: Antares Variable M42 Extender Male to Female Adapter for M42 Threads Provides Spacing of 31 mm up to 49 mm Used to set a precision back focus for a camera Accepts standard 2" threaded filters The Antares TEXT42 Variable M42 Camera Adapter is a device which allows you to set a desired precise back focus distance for doing astro imaging with your camera and telescope. Astro imaging using intermediary