Large Bahtinov Focus Mask for 12 inch Telescopes 290-340 mm

Show some love for the big boys!

Complete your astrophotography setup and start harvesting those sweet, beautiful photons. This lightweight focus tool is easy to attach and remove at night, and also durable enough to last even after being dropped a hundred times while blindly fumbling around in the dark.  

Bahtinov Focus Tool for Large Telescopes. Fits an Outer Diameter of 290-340 mm.

Never worry about focus again.

This mask is made from lightweight acrylic. Specially designed for telescopes, it will remain secured until you're ready to remove it.

Whether you’re doing planetary visual observing, planetary imaging, or deep-sky imaging, the Bahtinov Focus Tool is a great accessory to get the best focus for your telescope quickly and easily. 

 Not sure how to use a Bahtinov Mask to focus on planets and nebulae? Check out my 10 easy steps here: Using your bathinov mask.