Bahtinov Focus Mask - Bat-inov GoTo 8 mount weight to payload

8 mount weight to payload ratio

including the complete Abell catalog

130mm Newtonian reflector optical tube

Not compatible with smaller 42mm T rings

Looking for more power

Bahtinov Focus Mask - Bat-inov GoTo 8 mount weight to payloadBahtinov focus masks provide an ingenious way to easily focus your DSLR camera, webcam or CCD camera for astrophotography. The method is simple, very intuitive, and the device has universally been named after the inventor, Pavel Bahtinov. Adjustable Special Edition Bat inov Mask for telescopes with dew shield or front end diameter from 8. 5" to 10. 5" The mask works by creating a group of three diffraction spikes. Two of these generate a cross