TRI-Bahtinov Focus Mask - Meade SCT the most compact and portable

the most compact and portable of Celestron’s German equatorial mounts

35 kg (3 lb) counterweight is designed for SkyTracker Pro and SkyGuider pro counterweight package (#3324)

creating custom compartments for your optical tube

and a collimation tool

Even density with any aperture that keeps a flat surface as compared to other thin-film filters that have wrinkles and creases

TRI-Bahtinov Focus Mask - Meade SCT the most compact and portableWhat is the Tri Bahtinov? Essentially three Bahtinov masks in one, rotated over 120 degrees. It gives you three lines and three crosses to check focus and collimation, along three axis simultaneously. In addition to focusing, the tri Bahtinov so also indicates collimation status along three axis. This is interesting for e. g. Schmidt Cassegrain telescopes, where the collimation is done by push pull screws of the secondary mirror along three axis. When