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6 lb Tracking Rates Sidereal
Red LED flashlight features three brightness levels to preserve your night vision
With an hour here and an hour there trying to get polar aligned
L-Enhance is a narrow tri-band filter
TRI-Bahtinov Focus Mask - Celestron 52° FOV 6 lb Tracking Rates SiderealWhat 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
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