Filter Information

Plots and data included with most lists.

Instructions for Fast Beam Simulations

Glass Filter Spectral Transmission Curves from Schott Catalog (reproduced with permission from Schott Glass Technologies, Inc.)

Filter Loan Request Form - PDF fill-in form (if using Adobe Reader).   Or, use the MS-Word version.
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NOIRLab Filter Database

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
U k1001 k1001, k1001frs, KPNO Mosaic Standard UBVRI and White Filters k1001, k1001frs Note that there is a shift in central wavelength when placed in different f/ratio beams. At the KPNO 4meter f/3.1 beam this corresponds to a shift of approximately 12 Angstroms bluer; at the CTIO 4meter f/2.9 this corresponds to a shift of approximately 15 Angstroms bluer; at the WIYN 0.9m f/7.9 this corresponds to a shift of approximately 5 Angstroms bluer.
M1930 Gemini South Phoenix M1930 Start (cm-1 μm): 1890=5.291 - Stop (cm-1 μm): 1970=5.076 - Echelle order 11
L3290 Gemini South Phoenix L3290 Start (cm-1 μm): 3240=3.085 - Stop (cm-1 μm): 3355=2.980 - Echelle order 19
K4748 Gemini South Phoenix K4748 Start (cm-1 μm): 4704=2.126 - Stop (cm-1 μm): 4803=2.082 - Echelle order 27
M2030 Gemini South Phoenix M2030 Start (cm-1 μm): 1980=5.050 - Stop (cm-1 μm): 2080=4.808 - Echelle order 11
K4132 Gemini South Phoenix K4132 Start (cm-1 μm): 4077=2.452 - Stop (cm-1 μm): 4156=2.406 - Echelle order 23. Currently not installed in Phoenix.
H6073 Gemini South Phoenix H6073 Start (cm-1 μm): 6017=1.662 - Stop (cm-1 μm): 6129=1.632 - Echelle order 34
M2150 Gemini South Phoenix M2150 Start (cm-1 μm): 2105=4.751 - Stop (cm-1 μm): 2190=4.566 - Echelle order 12
K4220 Gemini South Phoenix K4220 Start (cm-1 μm): 4188=2.392 - Stop (cm-1 μm): 4263=2.348 - Echelle order 24
H6420 Gemini South Phoenix H6420 Start (cm-1 μm): 6377=1.568 - Stop (cm-1 μm): 6464=1.547 - Echelle order 36
L2462 Gemini South Phoenix L2462 Start (cm-1 μm): 2410=4.149 - Stop (cm-1 μm): 2495=4.008 - Echelle order 14
K4308 Gemini South Phoenix K4308 Start (cm-1 μm): 4258=2.349 - Stop (cm-1 μm): 4355=2.296 - Echelle order 24
J7799 Gemini South Phoenix J7799 Start (cm-1 μm): 7750=1.290 - Stop (cm-1 μm): 7865=1.271 - Echelle order 44
L2734 Gemini South Phoenix L2734 Start (cm-1 μm): 2680=3.731 - Stop (cm-1 μm): 2770=3.610 - Echelle order 15
K4396 Gemini South Phoenix K4396 Start (cm-1 μm): 4355=2.296 - Stop (cm-1 μm): 4446=2.249 - Echelle order 25
J8265 Gemini South Phoenix J8265 Start (cm-1 μm): 8243=1.213 - Stop (cm-1 μm): 8360=1.196 - Echelle order 47. Currently not installed in Phoenix.
L2870 Gemini South Phoenix L2870 Start (cm-1 μm): 2820=3.545 - Stop (cm-1 μm): 2910=3.436 - Echelle order 16
K4484 Gemini South Phoenix K4484 Start (cm-1 μm): 4429=2.250 - Stop (cm-1 μm): 4525=2.210 - Echelle order 25
J9232 Gemini South Phoenix J9232 Start (cm-1 μm): 9183=1.089 - Stop (cm-1 μm): 9286=1.077 - Echelle order 52
L3010 Gemini South Phoenix L3010 Start (cm-1 μm): 2950=3.390 - Stop (cm-1 μm): 3050=3.279 - Echelle order 17
K4578 Gemini South Phoenix K4578 Start (cm-1 μm): 4525=2.210 - Stop (cm-1 μm): 4630=2.160 - Echelle order 26
J9440 Gemini South Phoenix J9440 Start (cm-1 μm): 9396=1.064 - Stop (cm-1 μm): 9497=1.053 - Echelle order 53
L3100 Gemini South Phoenix L3100 Start (cm-1 μm): 3030=3.300 - Stop (cm-1 μm): 3145=3.180 - Echelle order 17
K4667 Gemini South Phoenix K4667 Start (cm-1 μm): 4617=2.166 - Stop (cm-1 μm): 4717=2.120 - Echelle order 26
J9671 Gemini South Phoenix J9671 Start (cm-1 μm): 9652=1.036 - Stop (cm-1 μm): 9709=1.030 - Echelle order 55. Currently not installed in Phoenix.
U Harris Solid 556.00 3645.00 WIYN 0.9-meter Telescope S2KB U Harris Solid Bandpass.
H-alpha+4nm 60.00 6618.00 WIYN 0.9-meter Telescope S2KB H-alpha+4nm Bandpass.
Stromgren b 207.70 4718.00 WIYN 0.9-meter Telescope S2KB Stromgren b Stromgren b 01-2013
B Harris 1070.00 4279.00 WIYN 0.9-meter Telescope S2KB B Harris B Harris 04-2003
H-alpha+8nm 60.00 6658.00 WIYN 0.9-meter Telescope S2KB H-alpha+8nm H-alpha+8nm 10-2007
Stromgren y 227.00 5514.00 WIYN 0.9-meter Telescope S2KB Stromgren y Stromgren y 01-2013
V Harris 936.00 5399.00 WIYN 0.9-meter Telescope S2KB V Harris V Harris 04-2003
H-alpha+8nm 60.00 6658.00 WIYN 0.9-meter Telescope S2KB H-alpha+8nm Bandpass.
Hb-narrow 30.00 4854.00 WIYN 0.9-meter Telescope S2KB Hb-narrow Hb-narrow 01-2013
R Harris 1509.00 6404.00 WIYN 0.9-meter Telescope S2KB R Harris R Harris 04-2003
H-alpha+12nm 63.00 6700.00 WIYN 0.9-meter Telescope S2KB H-alpha+12nm H-alpha+12nm 10-2007
Hb-wide 139.00 4875.00 WIYN 0.9-meter Telescope S2KB Hb-wide Hb-wide 01-2013
I Harris 2077.00 8333.00 WIYN 0.9-meter Telescope S2KB I Harris I Harris 11-2001
H-alpha+12nm 63.00 6700.00 WIYN 0.9-meter Telescope S2KB H-alpha+12nm Bandpass.
Ca 96.00 3972.00 WIYN 0.9-meter Telescope S2KB Ca Ca 01-2013
H-alpha 59.00 6577.00 WIYN 0.9-meter Telescope S2KB H-alpha H-alpha 10-2007
H-alpha+16nm 60.00 6742.00 WIYN 0.9-meter Telescope S2KB H-alpha+16nm H-alpha+16nm 4-2008
H-alpha 59.00 6577.00 WIYN 0.9-meter Telescope S2KB H-alpha Bandpass.
Stromgren u 34.00 3467.00 WIYN 0.9-meter Telescope S2KB Stromgren u Stromgren u 01-2013
U Harris Solid 556.00 3645.00 WIYN 0.9-meter Telescope S2KB U Harris Solid U Harris Solid 03-2004
H-alpha+4nm 60.00 6618.00 WIYN 0.9-meter Telescope S2KB H-alpha+4nm H-alpha+4nm 10-2007
Stromgren v 133.00 4117.00 WIYN 0.9-meter Telescope S2KB Stromgren v Stromgren v 01-2013
BG-38-1 2657.20 4896.52 KPNO 2.1-meter Telescope GoldCam BG-38-1 BG-38-1 Beware of red leak. Bandpass Filter.
WG-360 0.00 0.00 KPNO 2.1-meter Telescope GoldCam Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-455 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-455 GG-455 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.