1. Filters
  2. Filters

Filters

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
SDSS i WIYN 3.5-meter Telescope Hydra SDSS i SIZE: 4x4
H-band SMARTS 1.3-meter Telescope ANDICAM H-band H-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
kp1210 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1210
kp1434 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1434
kp247 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp247
kp1309a KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309a
kp1114 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1114
kp1524 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1524
ha H-alpha k1009 Nicholas U. Mayall 4-meter Telescope Mosaic ha H-alpha k1009 ha H-alpha k1009 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=6550A, FWHM=80A, PEAK TRANSMISSION=93.7%.
815 815_v1 k1026 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v1 k1026
VR Bernstein k1040 *** Retired! Nicholas U. Mayall 4-meter Telescope Mosaic VR Bernstein k1040 *** Retired! VR Bernstein k1040 *** Retired! 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=5934A, FWHM=2079A, PEAK TRANSMISSION=95.3%.
823 823_v2 k1047 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v2 k1047 A comparison of this filter with the newer version (k1047):
607 BATC k1058 ** Nicholas U. Mayall 4-meter Telescope Mosaic 607 BATC k1058 ** 607 BATC k1058 ** 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.
L2734 Gemini South Phoenix L2734 Start (cm-1 μm): 2680=3.731 - Stop (cm-1 μm): 2770=3.610 - Echelle order 15
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.
B set# 2 Schmidt WIYN 3.5-meter Telescope Hydra B set# 2 Schmidt SIZE: 4x4
R set #2 Schmidt WIYN 3.5-meter Telescope Hydra R set #2 Schmidt SIZE: 4x4
K-band SMARTS 1.3-meter Telescope ANDICAM K-band K-band Infrared Filer
SDSS g 4759/1430 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS r 6265/1483 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
OG590 BLANK Hydra, Hydra Schott Glass OG590 Schott Glass Filters. Purpose: Longpass > ~590nm Thickness: 2mm
kp1276 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276
kp1309a KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309a
kp1492 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1492
Gunn v KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn v Gunn v
V Harris k1003 Nicholas U. Mayall 4-meter Telescope Mosaic V Harris k1003 V Harris k1003
815 815_v1 k1026 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v1 k1026 815 815_v1 k1026 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=8087A, FWHM=71A, PEAK TRANSMISSION=93%.
823 823_v2 k1047 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v2 k1047 823 823_v2 k1047 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= 8193.49A FWHM= 68.30A PEAK TRANSMISSION= 89.71% at 8182A
607 BATC k1058 ** Nicholas U. Mayall 4-meter Telescope Mosaic 607 BATC k1058 ** 607 BATC k1058 **
L2870 Gemini South Phoenix L2870 Start (cm-1 μm): 2820=3.545 - Stop (cm-1 μm): 2910=3.436 - Echelle order 16
J9232 Gemini South Phoenix J9232 Start (cm-1 μm): 9183=1.089 - Stop (cm-1 μm): 9286=1.077 - Echelle order 52
SDSS u WIYN 3.5-meter Telescope Hydra SIZE: 4X4
Ca H&K line filter WIYN 3.5-meter Telescope Hydra Ca H&K line filter Ca H&K line filter SIZE: 4x4
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
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