TRI-Bahtinov Focus Mask - Celestron Guidescope no-tool set up
DKK36.00
DKK85.00
Pay in 4 interest-free payments of $9.00 Learn more
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
Live Spec
TRI-Bahtinov Focus Mask - Celestron Guidescope no-tool set upWhat 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
Store: avramcheva.com · Domain: avramcheva.com
