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
Hydra EC#11 379.00 5186.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#11 Order: 10.75
kp304 379.00 7011.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp304 i r filter
kp350a 387.00 3459.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350a stromgren u 4c set a
kp350a 387.00 3459.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350a stromgren u 4c set a
kp350a 387.00 3459.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350a stromgren u 4c set a
kp350a 387.00 3459.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350a stromgren u 4c set a
u SDSS c6022 400.00 3600.00 Nicholas U. Mayall 4-meter Telescope Mosaic u SDSS c6022 u SDSS c6022 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.
EO_832 403.00 8320.00 Gemini South ZORRO EO_832 EO_832 not convolved with dichroic
EO_832 403.00 8320.00 Gemini North ALOPEKE EO_832 EO_832 not convolved with dichroic
Hydra EC#10 422.00 5439.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#10 Order: 10.25
kp350b 423.00 3544.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350b stromgren u 4c set b
kp350b 423.00 3544.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350b stromgren u 4c set b
kp350b 423.00 3544.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350b stromgren u 4c set b
kp350b 423.00 3544.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350b stromgren u 4c set b
kp350c 428.00 3560.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350c stromgren u 4c set c
kp350c 428.00 3560.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350c stromgren u 4c set c
kp350c 428.00 3560.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350c stromgren u 4c set c
kp350c 428.00 3560.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp350c stromgren u 4c set c
EO_562 437.00 5622.00 Gemini North ALOPEKE EO_562 EO_562 not convolved with dichroic
EO_562 437.00 5622.00 Gemini South ZORRO EO_562 EO_562 not convolved with dichroic
EO_466 440.00 4670.00 Gemini North ALOPEKE EO_466 EO_466 not convolved with dichroic
EO_466 440.00 4670.00 Gemini South ZORRO EO_466 EO_466 not convolved with dichroic
Stromgren u 441.00 3460.00 SOAR Telescope Goodman, SOI Stromgren u Stromgren u 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
J2+3 blocker, Yale J2+3 blocker 442.00 1272.00 Nicholas U. Mayall 4-meter Telescope NEWFIRM Use with 2203, 2204
kp1001 443.00 9540.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1001
SDSS_u 446.00 3521.00 Gemini South ZORRO SDSS_u SDSS_u not convolved with dichroic
SDSS_u 446.00 3521.00 Gemini North ALOPEKE SDSS_u SDSS_u not convolved with dichroic
1644 blocker [Fe II] blocker 451.00 1593.00 Nicholas U. Mayall 4-meter Telescope NEWFIRM 1644 blocker [Fe II] blocker Use with 3301
kp1334 461.00 3961.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1334 gunn set combined `v' kp BG-38+UG3+BG1
kp1334 461.00 3961.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1334 gunn set combined `v' kp BG-38+UG3+BG2
Hydra EC#9 472.00 5718.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#9 Order: 9.75
Gunn v 472.00 3969.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn v Gunn v 3mmBG38, 4mmUG3, 1mmBG1, 1mmGG385
H1 + 2 blocker, Yale H1 +2 blcoker 472.00 1622.00 Nicholas U. Mayall 4-meter Telescope NEWFIRM Use with 3101, 3102, 3201, 3202
kp1080 475.00 8194.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter
kp1310a 476.00 3615.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter nearly mould u-omega
kp1333 488.00 3484.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1333 gunn set combined `u' kp BG38+UG11
kp1310b 489.00 3610.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter nearly mould u-omega
kp1081 499.00 8215.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1081
kp1305a 499.00 3600.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter nearly mould U-omega
Gunn u 508.00 3463.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn u Gunn u
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#8 531.00 6027.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#8 Order: 9.25
J blocker 533.00 1322.00 Nicholas U. Mayall 4-meter Telescope NEWFIRM J blocker Use with 2101, 2102
PAH 545.00 32950.00 Gemini North GNIRS PAH PAH
U Harris Solid 556.00 3645.00 WIYN 0.9-meter Telescope S2KB U Harris Solid U Harris Solid 03-2004
U Harris Solid 556.00 3645.00 WIYN 0.9-meter Telescope S2KB U Harris Solid Bandpass.
Un Steidel k1041 562.72 3479.17 Nicholas U. Mayall 4-meter Telescope Mosaic Un Steidel k1041 Un Steidel k1041 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.
Us solid U k1044 588.20 3651.81 Nicholas U. Mayall 4-meter Telescope Mosaic Us solid U k1044 Us solid U k1044 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.
T1 Wash. 590.00 6130.00 WIYN 3.5-meter Telescope Hydra T1 Wash. SIZE: 4x4-8.35mm. .9% leak at 1.2u.

Updated on June 27, 2022, 11:32 am