1. Filters
  2. Filters

Filters

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
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
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
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
Rs Steidel k1043 Nicholas U. Mayall 4-meter Telescope Mosaic Rs Steidel k1043 Rs Steidel k1043
390 BATC k1052 ** Nicholas U. Mayall 4-meter Telescope Mosaic 390 BATC k1052 ** 390 BATC k1052 **
705 BATC k1060 ** Nicholas U. Mayall 4-meter Telescope Mosaic 705 BATC k1060 ** 705 BATC k1060 **
Barr J Band Filter Nicholas U. Mayall 4-meter Telescope Flamingos Barr J Band Filter Barr J Band Filter Cuton: 1.170 - Cutoff: 1.326
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.
V set#2 Schmidt WIYN 3.5-meter Telescope Hydra V set#2 Schmidt SIZE: 4x4
Ca H&K line filter 3960/100 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS z 9100/1400 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
kp1276a KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276a
kp1309d KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309d
ha12 H-alpha+12nm k1012 Nicholas U. Mayall 4-meter Telescope Mosaic ha12 H-alpha+12nm k1012 ha12 H-alpha+12nm k1012 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=6672A, FWHM=83A, PEAK TRANSMISSION=87.3%.
823 823_v1 k1027 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v1 k1027 823 823_v1 k1027 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 the properties of this filter are: CWL=8170A, FWHM=71A, PEAK TRANSMISSION=91.5%.
420 BATC k1053 ** Nicholas U. Mayall 4-meter Telescope Mosaic 420 BATC k1053 ** 420 BATC k1053 ** 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.
755 BATC k1061 ** Nicholas U. Mayall 4-meter Telescope Mosaic 755 BATC k1061 ** 755 BATC k1061 ** 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.
Barr H Band Filter Nicholas U. Mayall 4-meter Telescope Flamingos Barr H Band Filter Barr H Band Filter Cuton: 1.495 - Cutoff: 1.776
K4220 Gemini South Phoenix K4220 Start (cm-1 μm): 4188=2.392 - Stop (cm-1 μm): 4263=2.348 - Echelle order 24
R set #2 Schmidt WIYN 3.5-meter Telescope Hydra R set #2 Schmidt SIZE: 4x4
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