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
DECam i 1281.00 7774.20 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam i DECam i
Wing TiO 125.00 7779.00 SOAR Telescope Goodman, SOI Wing TiO Wing TiO 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
kp7781b 93.00 7782.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
i_G0302 1440.00 7800.00 Gemini North GMOS-N i_G0302 i_G0302
SAMI-I K-C 1050.00 7800.00 SOAR Telescope SAM, SAMI SAMI-I K-C
i_G0327 1440.00 7800.00 Gemini South GMOS-S i_G0327 i_G0327
kp7832b 87.00 7828.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp1079 326.00 7843.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1079
kp7883b 82.00 7880.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7935b 88.00 7937.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
I c6028 1500.00 8050.00 Nicholas U. Mayall 4-meter Telescope Mosaic I c6028 I c6028 Note: The central wavelength of CTIO Mosaic narrow band filters (actually all filters, but is very significant for narrow band filters) is shifted ~15A to the BLUE in the f/2.87 beam of the Blanco 4m + PFADC corrector as compared to the transmission measured in parallel light. The central wavelength quoted below is nominally for when the filter is used at PF, with the ~15A shift included. Furthermore, the filter transmission curve presented below shows the simulated filter transmission curve for the Blanco 4m + PFADC f/2.87 beam.
Gunn i 1600.00 8065.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-9.22mm.
Gunn i 8120/1500 1600.00 8065.00 SMARTS Consortium: 0.9-meter Telescope BLANK Gunn i 8120/1500 Size: 4x4 Thick: 9.22
Gunn i 1600.00 8065.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-9.22mm.
I kc Tek set#3 1485.00 8067.00 WIYN 3.5-meter Telescope Hydra I kc Tek set#3 SIZE: 3x3-6.11mm.
I kc Tek set#3 8067/1485 1485.00 8067.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc Tek set#3 8067/1485 Size: 3x3 Thick: 6.11
I kc Tek set#3 1485.00 8067.00 WIYN 3.5-meter Telescope Hydra I kc Tek set#3 SIZE: 3x3-6.11mm.
I kc Tek set#1 1500.00 8075.00 WIYN 3.5-meter Telescope Hydra I kc Tek set#1 SIZE: 3x3-6.13mm.
I kc set#1 4mts 1500.00 8075.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-6.19mm.
I kc Tek set#1 8075/1500 1500.00 8075.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 3x3 Thick: 6.13
I kc set#1 4mts 8075/1500 1500.00 8075.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc set#1 4mts 8075/1500 Size: 4x4 Thick: 6.19
I kc Tek set#1 1500.00 8075.00 WIYN 3.5-meter Telescope Hydra I kc Tek set#1 SIZE: 3x3-6.13mm.
I kc set#1 4mts 1500.00 8075.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-6.19mm.
kp1342a 1539.00 8079.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1342a gunn set combined A `i' from sp tel
I Gunn-T 1500.00 8100.00 WIYN 3.5-meter Telescope Hydra I Gunn-T SIZE: 3X3-05.08mm.
I Gunn-T 8100/1500 1500.00 8100.00 SMARTS Consortium: 0.9-meter Telescope BLANK I Gunn-T 8100/1500 Size: 3X3 Thick: 5.08
I Gunn-T 1500.00 8100.00 WIYN 3.5-meter Telescope Hydra I Gunn-T SIZE: 3X3-05.08mm.
kp1309b 1698.00 8118.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309b nearly mould I-omega
I kc Tek set#2 1415.00 8118.00 WIYN 3.5-meter Telescope Hydra I kc Tek set#2 SIZE: 3X3
I kc Tek set#2 8118/1415 1415.00 8118.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc Tek set#2 8118/1415 Size: 3X3
I kc Tek set#2 1415.00 8118.00 WIYN 3.5-meter Telescope Hydra I kc Tek set#2 SIZE: 3X3
Wing CN 116.00 8123.00 SOAR Telescope Goodman, SOI Wing CN Wing CN 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
815 815_v1 k1026 70.36 8152.10 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v1 k1026 815 815_v1 k1026 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. See the plot at the bottom of the page. Note:In December 2003 a replacement for this filter (k1046) was purchased. See below for a comparison between the two filters.
815 815_v2 k1046 68.53 8152.64 Nicholas U. Mayall 4-meter Telescope Mosaic 815 815_v2 k1046 815 815_v2 k1046 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. See the plot at the bottom of the page. Note: This is a replacement for the old Rhoads 815 filter (k1026)
Gunn I 1289.00 8156.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn I Gunn I
kp1591 1839.00 8192.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp1591 kp1591 spare
kp1080 475.00 8194.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter
kp1469 1821.00 8204.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp1469 kp1469 2.1 meter set
I Nearly-Mould k1005 1914.59 8204.53 Nicholas U. Mayall 4-meter Telescope Mosaic I Nearly-Mould k1005 I Nearly-Mould k1005 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.
kp1268_12 1851.00 8205.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1268_12 mould system
kp1309a 1922.00 8212.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309a nearly mould I-omega - arlo's harris set 5mm quartz
kp1081 499.00 8215.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1081
kp1309d 1788.00 8220.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309d nearly mould I-omega defect at one edge
kp1309c 1877.00 8225.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309c nearly mould I-omega
823 823_v1 k1027 70.61 8232.04 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v1 k1027 823 823_v1 k1027 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. See the plot at the bottom of the page. Note: In December 2003 a replacement for this filter (k1047) was purchased. See below for a comparison of the two filters.
kp1493 372.00 8238.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1493 pierce, mike ordered
823 823_v2 k1047 68.02 8238.79 Nicholas U. Mayall 4-meter Telescope Mosaic 823 823_v2 k1047 823 823_v2 k1047 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. See the plot at the bottom of the page. Note: This is a replacement of the old Rhoads 823 filter (k1027) was purchased. See below for a comparison of the two filters.
kp1539 1954.00 8244.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp1539 kp1539 Not available
kp1314a 1966.00 8247.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1314a nearly mould I-omega
kp1492 373.00 8255.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1492 pierce, mike ordered

Updated on June 27, 2022, 11:32 am