Buckeyestargazer TriBahtinov Mask for Telescope Focus & Collimation Size:Tribahtinov-ESDOB1245 Visitors can easily recharge the

Visitors can easily recharge the transmitter using the included USB cable

Not recommended for solar observing or visual observation

Designed for maximum contrast with steep gradients

The ZWO ASI585MC Pro is one of the most versatile cooled astronomy cameras in the ZWO range

Surface Quality: 60/40 (MIL-O-13830 standard)

Buckeyestargazer TriBahtinov Mask for Telescope Focus & Collimation Size:Tribahtinov-ESDOB1245 Visitors can easily recharge theThe Buckeyestargazer TriBahtinov Mask combines the proven focusing precision of a traditional Bahtinov mask with the added ability to assess and fine tune collimation on telescopes with adjustable optics. Using a three zone diffraction design, the TriBahtinov pattern allows astrophotographers to achieve highly accurate focus while also identifying optical alignment errors, making it particularly valuable for SCT, RC, Maksutov, and other collimatable