Total number of 3-inch filters available: 15
POLARIS as of October 2001
Filter Wheel position #1: 486.4 nm (3.0 nm) [4861]
Filter Wheel position #2: 480.6 nm (3.0 nm) [background]
Filter Wheel position #3: 558.1 nm (2.0 nm) [5577]
Filter Wheel position #4: 630.4 nm (2.0 nm) [6300]
Filter Wheel position #5: OPEN (no filter)
Total 4 filters used (Polaris)
AQSANIQ as of April 2000
Filter Wheel position #1: 486.5 nm (3.0 nm) [4861] BW_eff = 3.25020 (measured Feb 2001)
Filter Wheel position #2: 480.6 nm (3.0 nm) [background] BW_eff = 3.07710 (measured Feb 2001)
Filter Wheel position #3: 630.4 nm (2.0 nm) [6300] BW_eff = 2.06219 (measured Feb 2001)
Filter Wheel position #4: 471.2 nm (3.0 nm) [4709] BW_eff = 3.05169 (measured Feb 2001)
Filter Wheel position #5: 650.0 nm NIR filter
Total 5 filters used (Aqsaniq)
TAQQIILA as of August 28 2000
Filter Wheel position #1: 558.1 nm (2.0 nm) [5577] BW_eff = 1.97043 (measured Feb 2001)
Filter Wheel position #2: 480.6 nm (3.0 nm) [background] BW_eff = 3.11981 (measured Feb 2001)
Filter Wheel position #3: 630.4 nm (2.0 nm) [6300] BW_eff = 2.01484 (measured Feb 2001)
Filter Wheel position #4: 428.2 nm (3.0 nm) [4278] BW_eff = 3.23841 (measured Feb 2001)
Filter Wheel position #5: OPEN (no filter)
Total 4 filters used (Polaris)
SPARE FILTERS INVENTORY as of August 28, 2000
Total filters available = 15 Filters
Total filters used Aqsaniq + Polaris + Taqqiila = 13 Filters
------------
Spare filters 2 Filters
These are the currently unused filters:
1 x 557.7 nm
1 x 427.8 nm
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Total 2 Filters
UPDATED Mon Aug 28 13:42:47 MDT 2000
Price was approx USD 1200.00 per interference
filter (Barr), and USD 200.00 for the NIR filter.
Batch #1, purchased with Polaris 1998
4278
4865
5577
6300
Total this batch: 4 interference filters
Batch #2, purchased for H-BETA imagers 1999
4278
4709
5577
5577
6300
6300
4861
4806
4806
4806
6500 LOWPASS
Total this batch: 10 interference filters + 1 Wrattan 89B NIR
TS TRONDSEN - Mon Jun 12 14:34:27 MDT 2000