1. Programs & Projects
  2. Mid-Scale Observatories — Kitt Peak National Observatory
  3. Filter Information
  4. Filter Information

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.)

Filter Loan Request Form - PDF fill-in form (if using Adobe Reader).   Or, use the MS-Word version.
{ Please fill out and send the signed form via either email (richard.joyce@noirlab.edu), or mail (950 North Cherry Avenue # Tucson, AZ 85719) }

NOIRLab Filter Database

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
Gunn r 900.00 6495.00 WIYN 3.5-meter Telescope Hydra Gunn r SIZE: 4x4-9.19mm.
Gunn r 900.00 6495.00 WIYN 3.5-meter Telescope Hydra Gunn r SIZE: 4x4-9.19mm.
Gunn r 790.00 6484.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn r Gunn r
Gunn r 803.00 6527.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn r Gunn r B1/K1
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.
Gunn i 1600.00 8065.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-9.22mm.
Gunn I 1289.00 8156.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn I Gunn I
Gunn g 4940/700 670.00 4920.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4 Thick: 8.95
Gunn g 670.00 4920.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-8.95mm.
Gunn g 706.00 4961.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn g Gunn g
Gunn g 670.00 4920.00 WIYN 3.5-meter Telescope Hydra SIZE: 4x4-8.95mm.
Gn Steidel k1042 762.13 4819.66 Nicholas U. Mayall 4-meter Telescope Mosaic Gn Steidel k1042 Gn Steidel k1042 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.
GG530 0.00 5225.00 Nicholas U. Mayall 4-meter Telescope KOSMOS GG530 GG530 KOSMOS dedicated blocker
GG495 BLANK Hydra, Hydra Schott Glass GG495 Schott Glass Filters. Purpose: Longpass > ~495nm Thickness: 2mm
GG495 0.00 4950.00 Nicholas U. Mayall 4-meter Telescope KOSMOS GG495 GG495 KOSMOS dedicated blocker
GG455_G0329 0.00 0.00 Gemini South GMOS-S GG455_G0329 GG455_G0329
GG455_G0305 0.00 0.00 Gemini North GMOS-N GG455_G0305 GG455_G0305
GG455 BLANK Hydra, Hydra Schott Glass GG455 Schott Glass Filters. Purpose: Longpass > ~455nm Thickness: 2mm
GG455 0.00 4565.00 Nicholas U. Mayall 4-meter Telescope KOSMOS GG455 GG455 KOSMOS dedicated blocker
GG420 BLANK Hydra, Hydra Schott Glass GG420 Schott Glass Filters. Purpose: Longpass > ~420nm Thickness: 2mm
GG395 0.00 4005.00 Nicholas U. Mayall 4-meter Telescope KOSMOS GG395 GG395 KOSMOS dedicated blocker
GG385 994.00 4363.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters GG385 GG385 2mm + BG12 2mm
GG385 BLANK Hydra, Hydra Schott Glass GG385 Schott Glass Filters. Purpose: Longpass > ~385nm Thickness: 2mm
GG-495 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-495 GG-495 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-495 4950.00 SOAR Telescope Goodman Goodman Spectrograph circular 4 inch diameter filters - Cutoff wavelength: < 495
GG-495 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-495 GG-495 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-475 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-475 GG-475 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-475 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-475 GG-475 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-455 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-455 GG-455 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-455 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-455 GG-455 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-455 4550.00 SOAR Telescope Goodman Goodman Spectrograph circular 4 inch diameter filters - Cutoff wavelength: < 455
GG-455 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-455 GG-455 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-420 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-420 GG-420 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-420 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-420 GG-420 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-420 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-420 GG-420 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-420 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-420 GG-420 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-400b 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-400b GG-400b Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-400 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-400 GG-400 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-385 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-385 GG-385 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-385 3850.00 SOAR Telescope Goodman Goodman Spectrograph circular 4 inch diameter filters - Cutoff wavelength: < 385
GG-385 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-385 GG-385 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-375 0.00 0.00 KPNO 2.1-meter Telescope GoldCam GG-375 GG-375 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
GG-375 0.00 0.00 Nicholas U. Mayall 4-meter Telescope RC Spectrograph GG-375 GG-375 Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
gd DECam k1035 *** New! 1524.00 4744.90 Nicholas U. Mayall 4-meter Telescope Mosaic gd DECam k1035 *** New! gd DECam k1035 *** New! 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.
g_G0325 1547.00 4750.00 Gemini South GMOS-S g_G0325 g_G0325
g_G0301 1547.00 4750.00 Gemini North GMOS-N g_G0301 g_G0301
g SDSS k1017 1395.73 4750.58 Nicholas U. Mayall 4-meter Telescope Mosaic g SDSS k1017 g SDSS k1017 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.
g SDSS c6017 1537.00 4813.00 Nicholas U. Mayall 4-meter Telescope Mosaic g SDSS c6017 g SDSS c6017 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.
g Gunn-T 5118/900 900.00 5118.00 SMARTS Consortium: 0.9-meter Telescope BLANK g Gunn-T 5118/900 g Gunn-T 5118/900 Size: 3x3 Thick: 5.05
Showing 1001 - 1050 of 1258

Updated on June 27, 2022, 11:32 am