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Filters at Siding Spring Observatory

Broad Band Filters

U - UG1 x 1, BG39 x 1, WG295 x 3 B - BG12 x 1, GG395 x 2, BG39 x 2 V - GG495 x 2, BG40 x 3 R - OG570 x 3, KG3 x 2 I - RG9 x 3, WG x 2 U - CuSo4 M - GG455 x 2, BG23 x 3 C - BG40 x 2, BG3 x 3 BJ - BG28 x 2, BG39 x 3 Special BJ for B.A.Peterson Special Z for M.Bessell 640nm BP150nm for B. Schmidt 785nm BP125nm " " " 595nm BP140nm " " " 733nm BP115nm " " "

round round square square round square round round round 2inch square 2inch round 50mm square 50mm square 50mm square 50mm square

Narrowband

6596/? 5321/10 6585/50 3727/31 5306/10 6620/25 6450/40 4759/40 4695/25 4014/30 5816/48 6590/19 6620/25 4900/30 6626/55 3905/30 5332/13 6576/15 3727/? 4900/30 5313/10 4881/20 5020/40 5016/25 6676/55 6574/50 6732/25

90mm round 75mm round 90mm round 75mm round 75mm round 50mm round 50mm round 50mm round 50mm round 75mm round 75mm round 100mm round 100mm round 100mm round 75mm round 75mm round 100mm round 75mm round 75mm round 50mm round 75mm round 50mm round 100mm round 75mm round 75mm round 90mm round 50mm round

Italian 50mm Filter Set (these comprise of 2 filter wheels which are normally housed in a yellow plastic box next to 2.3m filter storage drawers)

Wheel 1 645.0/7.5nm 509.7/6.0nm 506.0/6.0nm 502.2/6.0nm 494.6/6.0nm 490.8/6.0nm 487.0/6.0nm 478.0/7.5nm 668.0/7.5nm Wheel 2 498.4/6.0nm 513.5/6.0nm 517.5/6.0nm 521.3/6.0nm 528.0/12.0nm 673.0/7.5nm 678.0/7.5nm 683.0/7.5nm 684.5/6.0nm 688.0/7.5nm 695.0/15.0nm