Sitall mirror (glass ceramic with zero expansion coefficient), 1/10 lambda surface finish
140 coating layers for 99% reflectance
Scratch-proof, lifetime durable and absolutely flat
Use this diagonal with other components of the T-2 system for versatility. Baader T-2 System Chart Baader T-2 System Parts list. Astro-Physics carries some of these components designated by our part number that begins with BP and includes the reference number on the chart. We can special order any others that would like to have.