Bahtinov Focus Mask for Telescope - or Canon 58mm fits like lense cap, two piece clips together and twists on lense cap. Perfect for Austro photography! If your camera has long lense , enough pixals and you enjoy the night sky, this is for you.
Place it on the lense
Point towards a bright object
Manually focus for the centre line to be right between the angled ones.
Fast usps shipping. Made from spencer 3d. Color white.
Filed under: Eyepieces & Accessories