TS-Optics Bahtinov Focusing Mask for Telescopes from 195-240 mm for more precise and faster focusing, TSBahtinov195

Description

TS-Optics Bahtinov Focusing Mask for Telescopes up to 70mm aperture for more precise and faster focusing How to attach the mask to the telescopeEach mask is supplied with a pair of bolts and fitting plastic covers. Just push the bolts through the holes in the mask and slide the covers onto the bolts from the other side. Now the mask can be simply hinged onto the dewcap or the telescope tube. This adaptation is very universal and fits for widely varying tube diameters. How to focus using the Bahtinov Mask Picture 3:Left image and right image: Diffraction pattern inside and outside the focus Center image: Diffraction pattern on the perfectly focused image