Produces diffraction spikes to assist with accurate manual focus
Useful for astrophotography and high-magnification visual observing
Designed for use on bright stars during focusing
وصف
This aftermarket Bahtinov focusing mask is designed for select telescopes and provides a practical manual focusing aid for astrophotography and high-magnification visual observing. When aimed at a bright star, the mask creates diffraction spikes that help indicate when focus is properly adjusted.