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.)

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NOIRLab Filter Database

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
KPNO-B SMARTS 1.3-meter Telescope ANDICAM KPNO-B KPNO-B CCD Filter
GG455 BLANK Hydra, Hydra Schott Glass GG455 Schott Glass Filters. Purpose: Longpass > ~455nm Thickness: 2mm
kp1309b KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309b
kp1309c KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309c
kp1219 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1219
U k1001 Nicholas U. Mayall 4-meter Telescope Mosaic U k1001
M Washington k1007 Nicholas U. Mayall 4-meter Telescope Mosaic M Washington k1007 M Washington k1007 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=5168A, FWHM=1126A, PEAK TRANSMISSION=86.5%.
Ooff OIII+30nm k1015 Nicholas U. Mayall 4-meter Telescope Mosaic Ooff OIII+30nm k1015 Ooff OIII+30nm k1015 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=5298.69A FWHM=240.20A PEAK TRANSMISSION=91.73%
Bw NDWFS k1025 Nicholas U. Mayall 4-meter Telescope Mosaic Bw NDWFS k1025 Bw NDWFS k1025 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) and the CTIO 4m (f/2.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=4091A, FWHM=1250A, PEAK TRANSMISSION=91.7%.
815 815_v2 k1046 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v2 k1046 A comparison of this filter with the older version of this filter (k1026):
527 BATC k1056 ** Nicholas U. Mayall 4-meter Telescope Mosaic 527 BATC k1056 ** 527 BATC k1056 ** 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.
918 BATC k1064 ** Nicholas U. Mayall 4-meter Telescope Mosaic 918 BATC k1064 ** 918 BATC k1064 ** 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
K4748 Gemini South Phoenix K4748 Start (cm-1 μm): 4704=2.126 - Stop (cm-1 μm): 4803=2.082 - Echelle order 27
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
KPNO-V SMARTS 1.3-meter Telescope ANDICAM KPNO-V KPNO-V CCD Filter
SDSS i 7734/50 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
GG495 BLANK Hydra, Hydra Schott Glass GG495 Schott Glass Filters. Purpose: Longpass > ~495nm Thickness: 2mm
kp1217 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1217
kp1345 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1345
815 815_v2 k1046 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v2 k1046 815 815_v2 k1046 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= 8109.85A FWHM= 68.62A PEAK TRANSMISSION= 81.42% at 8122A
527 BATC k1056 ** Nicholas U. Mayall 4-meter Telescope Mosaic 527 BATC k1056 ** 527 BATC k1056 **
918 BATC k1064 ** Nicholas U. Mayall 4-meter Telescope Mosaic 918 BATC k1064 ** 918 BATC k1064 **
M2030 Gemini South Phoenix M2030 Start (cm-1 μm): 1980=5.050 - Stop (cm-1 μm): 2080=4.808 - Echelle order 11
H6073 Gemini South Phoenix H6073 Start (cm-1 μm): 6017=1.662 - Stop (cm-1 μm): 6129=1.632 - Echelle order 34
KPNO-I SMARTS 1.3-meter Telescope ANDICAM KPNO-I KPNO-I CCD Filter
B set# 2 Schmidt 4200/1050 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
OG515 BLANK Hydra, Hydra Schott Glass OG515 Schott Glass Filters. Purpose: Longpass > ~515nm Thickness: 2mm
kp798 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp798
kp7630b KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp7630b
kp1493 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1493
kp920 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp920
Washington C KPNO 2.1-meter Telescope KPNO 4-Inch Filters Washington C Washington C
B Harris k1002 Nicholas U. Mayall 4-meter Telescope Mosaic B Harris k1002 B Harris k1002
D51 DDO 51 k1008 Nicholas U. Mayall 4-meter Telescope Mosaic D51 DDO 51 k1008 D51 DDO 51 k1008 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=5132A FWHM=161A PEAK TRANSMISSION=85.1%
815 815_v1 k1026 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v1 k1026 815 815_v1 k1026
579 BATC k1057 ** Nicholas U. Mayall 4-meter Telescope Mosaic 579 BATC k1057 ** 579 BATC k1057 ** 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.
973 BATC k1065 ** Nicholas U. Mayall 4-meter Telescope Mosaic 973 BATC k1065 ** 973 BATC k1065 ** 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.
M2150 Gemini South Phoenix M2150 Start (cm-1 μm): 2105=4.751 - Stop (cm-1 μm): 2190=4.566 - Echelle order 12
H6420 Gemini South Phoenix H6420 Start (cm-1 μm): 6377=1.568 - Stop (cm-1 μm): 6464=1.547 - Echelle order 36
J-band SMARTS 1.3-meter Telescope ANDICAM J-band J-band Infrared Filer
SDSS u 3513/628 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4X4
OG570 BLANK Hydra, Hydra Schott Glass OG570 Schott Glass Filters. Purpose: Longpass > ~570nm Thickness: 2mm
kp1113 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1113
B Harris k1002 Nicholas U. Mayall 4-meter Telescope Mosaic B Harris k1002
815 815_v1 k1026 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v1 k1026 A comparison of this filter with the newer version of this filter (k1046):
823 823_v2 k1047 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v2 k1047 823 823_v2 k1047
579 BATC k1057 ** Nicholas U. Mayall 4-meter Telescope Mosaic 579 BATC k1057 ** 579 BATC k1057 **
973 BATC k1065 ** Nicholas U. Mayall 4-meter Telescope Mosaic 973 BATC k1065 ** 973 BATC k1065 **

Updated on June 27, 2022, 11:32 am