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
Halpha 68.00 6567.00 WIYN 3.5-meter Telescope Hydra Halpha SIZE: 4x4-5.54mm.
kp1276a 36.00 6566.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276a
H-alpha 32.00 6565.00 Gemini South ZORRO H-alpha H-alpha not convolved with dichroic
kp1281 160.00 6565.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1281 h alpha
H-alpha 32.00 6565.00 Gemini North ALOPEKE H-alpha H-alpha not convolved with dichroic
kp1276 35.00 6565.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276 nebular set
KP811 88.46 6563.62 Nicholas U. Mayall 4-meter Telescope KOSMOS KP811 KP811 KOSMOS Approved KPNO 4in. Filter.
ha H-alpha c6009 80.00 6563.00 Nicholas U. Mayall 4-meter Telescope Mosaic ha H-alpha c6009 ha H-alpha c6009 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.
kp795 10.00 6563.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp795 nebular set
narrow Halpha (CTIO set) 75.00 6563.00 SOAR Telescope Goodman, SOI narrow Halpha (CTIO set) narrow Halpha (CTIO set) 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
SAMI Hα Broad 75.00 6563.00 SOAR Telescope SAM, SAM-FP
SAMI-Ha Narrow 75.00 6563.00 SOAR Telescope SAM, SAMI SAMI-Ha Narrow
H-alpha narrow 29.00 6560.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha narrow H-alpha narrow has red leak
Ha_G0310 72.00 6560.00 Gemini North GMOS-N Ha_G0310 Ha_G0310
Ha_G0336 71.00 6560.00 Gemini South GMOS-S Ha_G0336 Ha_G0336
Halpha 64.00 6559.00 WIYN 3.5-meter Telescope Hydra Halpha SIZE: 3x3-5.61mm.
Halpha 64.00 6559.00 WIYN 3.5-meter Telescope Hydra Halpha SIZE: 3x3-5.61mm.
Halpha 656375-3 64.00 6559.00 SMARTS Consortium: 0.9-meter Telescope BLANK Halpha 656375-3 Size: 3x3 Thick: 5.61
KP1468 85.86 6556.02 Nicholas U. Mayall 4-meter Telescope KOSMOS KP1468 KP1468 KOSMOS Approved KPNO 4in. Filter.
kp1340a 846.00 6555.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter gunn set A 'r' from sp tel
kp1216 9.00 6552.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1216
KP1519 28.91 6550.15 Nicholas U. Mayall 4-meter Telescope KOSMOS KP1519 KP1519 KOSMOS Approved KPNO 4in. Filter.
SAMI-R K-C 1800.00 6550.00 SOAR Telescope SAM, SAMI SAMI-R K-C
Harris R 1559.00 6531.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Harris R Harris R Not available
kp6520b 75.00 6528.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combinrd
Gunn r 803.00 6527.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn r Gunn r B1/K1
kp1113 1507.00 6524.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1113 bessell system k p
kp181 1515.00 6518.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter bessell system revised k p R
kp1348a 1127.00 6517.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1348a nearly mould R spectro-film
Osmer/Green R 871.00 6517.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Osmer/Green R Osmer/Green R
kp1349b 1116.00 6514.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1349b nearly mould R spectro-film
kp1350c 1128.00 6514.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1350c nearly mould R spectro-film
R Harris k1004 1511.30 6513.54 Nicholas U. Mayall 4-meter Telescope Mosaic R Harris k1004 R Harris k1004 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.
kp1097 1519.00 6506.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1097 video camera
kp1308a 1272.00 6505.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter nearly mould R-omega
kp1313a 1088.00 6504.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1313a nearly mould R-omega
kp1217 101.00 6504.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1217 replaced 8-13-86
wh Bk-7 c6016 5000.00 6500.00 Nicholas U. Mayall 4-meter Telescope Mosaic
kp1304 781.00 6497.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1304 gunn set combined `r' kp omega (6550)
kp1313b 1127.00 6496.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1313b nearly mould R-omega
kp1308b 1272.00 6495.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter nearly mould R-omega
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 6560/900 900.00 6495.00 SMARTS Consortium: 0.9-meter Telescope BLANK Gunn r 6560/900 Size: 4x4 Thick: 9.19
kp1267_14 1302.00 6490.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1267_14 mould system
kp809 67.00 6488.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp809 kp809 Minor edge separation
Harris set R- spare 1515.00 6488.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Harris set R- spare Harris set R- spare
kp1358 1585.00 6486.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter saao 2mmOG570 2mmKG3 3mmquartz
Gunn r 790.00 6484.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Gunn r Gunn r
kp6477a 72.00 6483.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined

Updated on June 27, 2022, 11:32 am