TRI-Bahtinov Focus Mask - Meade SCT Clear windows built into motor

Clear windows built into motor covers so pulleys and belts can be monitored

and a few more of the most famous celestial objects

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)

TRI-Bahtinov Focus Mask - Meade SCT Clear windows built into motorWhat 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