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
kp6781b 77.00 6786.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
H-alpha +22nm 78.00 6786.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha +22nm H-alpha +22nm set1
OVIC_G0348 50.00 6790.00 Gemini South GMOS-S OVIC_G0348 OVIC_G0348
OVIC_G0346 50.00 6790.00 Gemini North GMOS-N OVIC_G0346 OVIC_G0346
Todd Boroson filter 2 798.00 6819.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Todd Boroson filter 2 Todd Boroson filter 2
KP1498 74.96 6823.53 Nicholas U. Mayall 4-meter Telescope KOSMOS KP1498 KP1498 KOSMOS Approved KPNO 4in. Filter.
kp6826a 85.00 6832.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp6826a halpha set combined
H-alpha +27nm 75.00 6832.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha +27nm H-alpha +27nm set1
OVI_G0347 51.00 6840.00 Gemini South GMOS-S OVI_G0347 OVI_G0347
OVI_G0345 51.00 6840.00 Gemini North GMOS-N OVI_G0345 OVI_G0345
KP1517 76.36 6866.80 Nicholas U. Mayall 4-meter Telescope KOSMOS KP1517 KP1517 KOSMOS Approved KPNO 4in. Filter.
kp6871b 81.00 6873.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
H-alpha +31nm 76.00 6877.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha +31nm H-alpha +31nm set1
kp814 117.00 6907.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp814 kp814 possible edge deterioration
kp6916b 78.00 6918.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp6961a 77.00 6960.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
Rs Steidel k1043 1048.78 6975.13 Nicholas U. Mayall 4-meter Telescope Mosaic Rs Steidel k1043 Rs Steidel k1043 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.
kp7007a 90.00 7001.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp304 379.00 7011.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp304 i r filter
Hale-Bopp H2O 177.00 7021.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters
ri_G0349 2910.00 7050.00 Gemini North GMOS-N ri_G0349 ri_G0349
kp7053a 78.00 7055.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7099a 80.00 7103.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
Hale-Bopp Red Continuum 60.00 7134.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters
kp265 32.00 7138.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp265 bad wavy surface
kp7146b 71.00 7154.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
EO_716 515.00 7159.00 Gemini North ALOPEKE EO_716 EO_716 not convolved with dichroic
EO_716 515.00 7159.00 Gemini South ZORRO EO_716 EO_716 not convolved with dichroic
Hydra EC#5 784.00 7193.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#5 Order: 7.75
kp7193b 71.00 7203.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7240b 79.00 7243.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7288b 73.00 7290.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7336b 78.00 7333.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7384b 85.00 7385.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
Osmer/Green 7500 703.00 7428.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Osmer/Green 7500 Osmer/Green 7500 Green 7500
kp7433b 77.00 7434.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7482a 84.00 7485.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7531a 80.00 7532.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7580b 90.00 7584.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp7630b 82.00 7629.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp7630b halpha set combined
SDSS_i 1476.00 7650.00 Gemini South ZORRO SDSS_i SDSS_i not convolved with dichroic
SDSS_i 1476.00 7650.00 Gemini North ALOPEKE SDSS_i SDSS_i not convolved with dichroic
kp7680a 81.00 7683.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
Hydra EC#4 907.00 7689.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#4 Order: 7.25
i SDSS k1019 1539.89 7726.28 Nicholas U. Mayall 4-meter Telescope Mosaic i SDSS k1019 i SDSS k1019 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.
SDSS i' 2006.00 7731.00 SOAR Telescope Goodman, SOI SDSS i' SDSS i' 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
i SDSS c6019 1548.00 7732.00 Nicholas U. Mayall 4-meter Telescope Mosaic i SDSS c6019 i SDSS c6019 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.
SDSS I' 1500.00 7734.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters SDSS I' SDSS I' Sloan Digital Sky Survey set
kp7730b 93.00 7738.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
SAMI-i SDSS 765.00 7750.00 SOAR Telescope SAM, SAMI SAMI-i SDSS

Updated on June 27, 2022, 11:32 am