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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.
{ Please fill out and send the signed form via either email (richard.joyce@noirlab.edu), or mail (950 North Cherry Avenue # Tucson, AZ 85719) }

NOIRLab Filter Database

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
SDSS z WIYN 3.5-meter Telescope Hydra SDSS z SIZE: 4x4
YALO B SMARTS 1.3-meter Telescope ANDICAM YALO B YALO B Legacy Filter
RG610 BLANK Hydra, Hydra Schott Glass RG610 Schott Glass Filters. Purpose: Longpass > ~610nm Thickness: 2mm
kp1350c KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1350c
kp1276 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276
kp859 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp859
kp1309a KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309a
V Harris k1003 Nicholas U. Mayall 4-meter Telescope Mosaic V Harris k1003
ha4 H-alpha+4nm k1010 Nicholas U. Mayall 4-meter Telescope Mosaic ha4 H-alpha+4nm k1010 ha4 H-alpha+4nm k1010 Below is a plot of the transmission of this filter when used at telescopes with differing focal ratios and central obscurations; the KPNO 4m (f/3.1), the CTIO 4m (f/2.9), and the WIYN 0.9m (f/7.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=6593A, FWHM=81A, PEAK TRANSMISSION=91.1%.
Un Steidel k1041 Nicholas U. Mayall 4-meter Telescope Mosaic Un Steidel k1041 Un Steidel k1041
337 BATC k1051 ** Nicholas U. Mayall 4-meter Telescope Mosaic 337 BATC k1051 ** 337 BATC k1051 ** 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.
666 BATC k1059 ** Nicholas U. Mayall 4-meter Telescope Mosaic 666 BATC k1059 ** 666 BATC k1059 ** 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.
L3010 Gemini South Phoenix L3010 Start (cm-1 μm): 2950=3.390 - Stop (cm-1 μm): 3050=3.279 - Echelle order 17
J9440 Gemini South Phoenix J9440 Start (cm-1 μm): 9396=1.064 - Stop (cm-1 μm): 9497=1.053 - Echelle order 53
SDSS g WIYN 3.5-meter Telescope Hydra SDSS g SDSS g SIZE: 4x4
SDSS r WIYN 3.5-meter Telescope Hydra SDSS r SIZE: 4x4
z Gunn WIYN 3.5-meter Telescope Hydra SIZE: 4x4
YALO wide R SMARTS 1.3-meter Telescope ANDICAM YALO wide R YALO wide R Legacy Filter
RG665 BLANK Hydra, Hydra Schott Glass RG665 Schott Glass Filters. Purpose: Longpass > ~665nm Thickness: 2mm
kp1350c KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1350c
kp1276 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276
kp256 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp256
kp1218 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1218
wrc3 WR CIII k1021 Nicholas U. Mayall 4-meter Telescope Mosaic wrc3 WR CIII k1021 wrc3 WR CIII k1021 Below is a plot of this filter as simulated in different f/ratio beams. At the KPNO 4m f/3.1 the properties of this filter are: CWL=4657A FWHM=52.6A PEAK TRANSMISSION=68.23%
823 823_v1 k1027 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v1 k1027 823 823_v1 k1027
337 BATC k1051 ** Nicholas U. Mayall 4-meter Telescope Mosaic 337 BATC k1051 ** 337 BATC k1051 **
666 BATC k1059 ** Nicholas U. Mayall 4-meter Telescope Mosaic 666 BATC k1059 ** 666 BATC k1059 **
L3100 Gemini South Phoenix L3100 Start (cm-1 μm): 3030=3.300 - Stop (cm-1 μm): 3145=3.180 - Echelle order 17
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.
z Gunn WIYN 3.5-meter Telescope Hydra SIZE: 3x3
J 12500.00 Víctor M. Blanco 4-meter Telescope ISPI ISPI Broad Band Filter. Wavelengths @80% (micron): 1.176 - 1.322
kp1333 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1333
kp1350c KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1350c
kp1079 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1079
kp1081 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1081
R Harris k1004 Nicholas U. Mayall 4-meter Telescope Mosaic R Harris k1004 R Harris k1004
ha8 H-alpha+8nm k1011 Nicholas U. Mayall 4-meter Telescope Mosaic ha8 H-alpha+8nm k1011 ha8 H-alpha+8nm k1011 Below is a plot of the transmission of this filter when used at telescopes with differing focal ratios and central obscurations; the KPNO 4m (f/3.1), the CTIO 4m (f/2.9), and the WIYN 0.9m (f/7.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=6634A, FWHM=81A, PEAK TRANSMISSION=89.2%.
823 823_v1 k1027 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v1 k1027 A comparison of this filter with the newer version (k1047):
390 BATC k1052 ** Nicholas U. Mayall 4-meter Telescope Mosaic 390 BATC k1052 ** 390 BATC k1052 ** 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.
705 BATC k1060 ** Nicholas U. Mayall 4-meter Telescope Mosaic 705 BATC k1060 ** 705 BATC k1060 ** 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.
L3290 Gemini South Phoenix L3290 Start (cm-1 μm): 3240=3.085 - Stop (cm-1 μm): 3355=2.980 - Echelle order 19
H 16350.00 Víctor M. Blanco 4-meter Telescope ISPI ISPI Broad Band Filter. Wavelengths @80% (micron): 1.5005 - 1.7705
R set #2 Schmidt 6437/1525 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
kp1276a KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276a
kp1520 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1520
kp248 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp248
Gunn u KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn u
R Harris k1004 Nicholas U. Mayall 4-meter Telescope Mosaic R Harris k1004
wr475 WR 475 k1022 Nicholas U. Mayall 4-meter Telescope Mosaic wr475 WR 475 k1022 wr475 WR 475 k1022 Below is a plot of this filter as simulated in different f/ratio beams. At the KPNO 4m f/3.1 the properties of this filter are: CWL=4749A FWHM=51.32A PEAK TRANSMISSION=79.2%.
823 823_v1 k1027 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v1 k1027
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Updated on June 27, 2022, 11:32 am