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
B Tek set#3 4203/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#3 4203/1050 Size: 3x3 Thick: 5.26
B Tek set#2 1050.00 4200.00 WIYN 3.5-meter Telescope Hydra B Tek set#2 SIZE: 3x3
B Tek set#1 4201/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#1 4201/1050 Size: 3x3 Thick: 5.17
B Tek set#3 1050.00 4200.00 WIYN 3.5-meter Telescope Hydra B Tek set#3 SIZE: 3x3-5.26mm.
B Tek set#1 1050.00 4200.00 WIYN 3.5-meter Telescope Hydra B Tek set#1 SIZE: 3x3-5.17mm.
B Tek set#2 1050.00 4200.00 WIYN 3.5-meter Telescope Hydra B Tek set#2 SIZE: 3x3
B Tek set#3 1050.00 4200.00 WIYN 3.5-meter Telescope Hydra B Tek set#3 SIZE: 3x3-5.26mm.
Hydra EC#16 233.00 4207.00 BLANK Hydra, Hydra Echelle Mode Hydra EC#16 Order: 13.25
kp740 910.00 4240.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter
kp1409 70.00 4260.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter DDO SET
Hale-Bopp CO 56.00 4265.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters
B Harris 1070.00 4279.00 WIYN 0.9-meter Telescope S2KB B Harris B Harris 04-2003
BG12 1015.00 4299.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters BG12 BG12 1mm + GG385 2mm
kp1423_3 1038.00 4308.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1423_3 harris set B
kp1427_4 1042.00 4310.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1427_4 harris set B
Harris B 1069.00 4312.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Harris B Harris B new 7/98
kp1461 1041.00 4319.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1461 harris set B-SCRATCHED
kp1416_2 1064.00 4320.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1416_2 harris set B
Bessell B 1269.00 4326.00 SOAR Telescope Goodman, SOI Bessell B Bessell B 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
kp1404_1 1072.00 4329.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1404_1 Harris set bg12,bg39,gg385
Harris B 1061.00 4334.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Harris B Harris B 2.1 meter set
Harris B 1020.00 4340.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Harris B Harris B Not available
kp1499 1040.00 4340.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1499 arlo's ccd harris set
Harris set B- spare 1041.00 4342.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Harris set B- spare Harris set B- spare
Bj Tyson c6024 *** Not Available 1650.00 4350.00 Nicholas U. Mayall 4-meter Telescope Mosaic Bj Tyson c6024 *** Not Available Bj Tyson c6024 *** Not Available 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.
kp1111 1004.00 4355.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1111 bessell system k p
kp1111 1004.00 4355.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1111 bessell system k p
kp1111 1004.00 4355.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1111 bessell system k p
B Tyson "J" 1665.00 4357.00 WIYN 3.5-meter Telescope Hydra B Tyson "J" SIZE: 4x4-3.65mm.
B Tyson "J" 4357/1665 1665.00 4357.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tyson "J" 4357/1665 Size: 4x4 Thick: 3.65
B Tyson "J" 1665.00 4357.00 WIYN 3.5-meter Telescope Hydra B Tyson "J" SIZE: 4x4-3.65mm.
Johnson B 4360.00 SOAR Telescope Goodman Goodman Spectrograph circular 4 inch diameter filters - Central wavelength = 436
B Harris c6002 990.00 4360.00 Nicholas U. Mayall 4-meter Telescope Mosaic B Harris c6002 B Harris c6002 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.
kp253 16.00 4362.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp253 nebular set
GG385 994.00 4363.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters GG385 GG385 2mm + BG12 2mm
kp1522 25.00 4371.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1522 replaces kp1206
kp1522 25.00 4371.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1522 replaces kp1207
kp179 986.00 4372.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp179 bessell system revised k p B
kp179 986.00 4372.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp179 bessell system revised k p B
kp1206 43.00 4374.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter
kp1052 1003.00 4374.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1052 w b special
kp1052 1003.00 4374.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1052 w b special
B Harris k1002 993.88 4381.00 Nicholas U. Mayall 4-meter Telescope Mosaic B Harris k1002 B Harris k1002 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.
kp1360 997.00 4383.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter saao for makeup see saao memo
kp1265_13 1051.00 4395.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1265_13 mould system
SAMI-B K-C 1000.00 4400.00 SOAR Telescope SAM, SAMI SAMI-B K-C
kp399 1001.00 4405.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp399 omega b sample
Tyson Bj 1523.00 4406.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Tyson Bj Tyson Bj Given by Tony Tyson
kp1412 76.00 4412.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1412 backup for kp802-janos
kp901 88.00 4418.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter

Updated on June 27, 2022, 11:32 am