Surface desc. Material Temp (C) ------------- -------- -------- Primary Aluminum 2.6 Secondary Aluminum 2.6 tertiary Aluminum 2.6 rotator M1 Aluminum 5 rotator M2 Silver 5 rotator M3 Aluminum 5 Tip Tilt M Silver 5 OAP1 Silver 5 DM Silver 5 OAP2 Silver 5 IR Dich 1 S1 tt_dichroic 5 IR Dich 1 bulk CAF2 5 IR Dich 1 S2 NIR_AR 5 Instr Window S1 NIR_AR 5 Instr Window Bulk CAF2 5