TRI-Bahtinov Focus Mask - Meade SCT 1 Field Stop (mm) 22

1 Field Stop (mm) 22

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

and a collimation tool

Adjustable EQ head position to optimize center of gravity over the tripod and fully utilize the increased 3°-65° latitude range

TRI-Bahtinov Focus Mask - Meade SCT 1 Field Stop (mm) 22What 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