160mm Bahtinov Mask
The Bahtinov Mask for 160mm Optics is an indispensable optical accessory designed for amateur astronomers and astrophotographers seeking flawless telescope focus. Specifically optimized for 140-150mm class optical tubes, this precision grid mask takes all guesswork out of your night-sky focus routine.
Attaining razor-sharp focus during astrophotography imaging sessions can be challenging, but the Bahtinov Mask for 160mm Optics makes the process fast and highly accurate. Invented by amateur astrophotographer Pavel Bahtinov, this focusing tool produces a distinct symmetrical diffraction spike pattern when placed over the telescope aperture and aimed at a bright target star. By adjusting your telescope focuser until the center spike perfectly bisects the grid's X-pattern, you ensure ideal focal accuracy for high-resolution photography. Built to securely fit dew shields with an outside diameter between 175mm and 212mm, this mask is an essential upgrade for serious backyard observers.
How do I use the Bahtinov Mask for 160mm Optics to focus my telescope?
Place the Bahtinov Mask for 160mm Optics over the front of your telescope's dew shield, point the optic at a bright star, and take a short test exposure or use live view. Adjust your focuser until the central diffraction spike is centered directly between the angled X-pattern spikes.
What telescope sizes are compatible with the Bahtinov Mask for 160mm Optics?
The Bahtinov Mask for 160mm Optics is engineered primarily for 140mm to 150mm class telescopes and fits dew shields with an outside diameter ranging from 175mm to 212mm.
Should I leave the Bahtinov Mask for 160mm Optics on while capturing my deep-sky images?
No, the Bahtinov Mask for 160mm Optics is strictly a focusing aid. Once you achieve sharp focus, carefully remove the mask before taking your final astrophotography exposures.







































