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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.
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NOIRLab Filter Database

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
SAMI-Ha Narrow 75.00 6563.00 SOAR Telescope SAM, SAMI SAMI-Ha Narrow
KP811 88.46 6563.62 Nicholas U. Mayall 4-meter Telescope KOSMOS KP811 KP811 KOSMOS Approved KPNO 4in. Filter.
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
kp1276a 36.00 6566.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1276a
Halpha 656375-4 68.00 6567.00 SMARTS Consortium: 0.9-meter Telescope BLANK Halpha 656375-4 Size: 4x4 Thick: 5.54
kp376 9.00 6567.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp376 backup for 795 janos
H-alpha 84.00 6567.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha H-alpha Andover [set1?]
Halpha 68.00 6567.00 WIYN 3.5-meter Telescope Hydra Halpha SIZE: 4x4-5.54mm.
Halpha 68.00 6567.00 WIYN 3.5-meter Telescope Hydra Halpha SIZE: 4x4-5.54mm.
kp1281a 170.00 6568.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1281a
kp6563a 74.00 6568.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
kp1345 78.00 6569.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1345
kp810 39.00 6569.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp810 h alpha system
kp1434 29.00 6569.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1434 halpha replaces kp810
BTFI_6569/20 BTFI 18.60 6569.20 SOAR Telescope SAM, SAMI
BTFI 6569 / 20 18.60 6569.20 SOAR Telescope SAM, SAM-FP
H-alpha 89.00 6572.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha H-alpha Some edge deterioration
H-alpha_2 67.00 6573.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha_2 H-alpha_2 set2
ha H-alpha k1009 80.62 6574.74 Nicholas U. Mayall 4-meter Telescope Mosaic ha H-alpha k1009 ha H-alpha k1009 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. See the plot at the bottom of the page.
H-alpha 59.00 6577.00 WIYN 0.9-meter Telescope S2KB H-alpha H-alpha 10-2007
kp1282 168.00 6577.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1282 h alpha replaced
H-alpha 59.00 6577.00 WIYN 0.9-meter Telescope S2KB H-alpha Bandpass.
KP1390 72.39 6577.44 Nicholas U. Mayall 4-meter Telescope KOSMOS KP1390 KP1390 KOSMOS Approved KPNO 4in. Filter.
BTFI_6579/20 BTFI 19.90 6578.80 SOAR Telescope SAM, SAMI
BTFI 6579 / 20 19.90 6578.80 SOAR Telescope SAM, SAM-FP
SAMI-[NII]6583 Narrow 18.00 6583.00 SOAR Telescope SAM, SAMI SAMI-[NII]6583 Narrow
SAMI [NII] Narrow 18.00 6583.00 SOAR Telescope SAM, SAM-FP
kp256 13.00 6586.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp256 nebular set
H-alpha 72.00 6587.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha H-alpha Andover
kp1520 16.00 6590.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1520 nebular set replaces kp256
660075-3 69.00 6598.00 SMARTS Consortium: 0.9-meter Telescope BLANK 660075-3 Size: 3x3 Thick: 5.57
N/A 69.00 6598.00 WIYN 3.5-meter Telescope Hydra N/A SIZE: 3x3-5.57mm.
N/A 69.00 6598.00 WIYN 3.5-meter Telescope Hydra N/A SIZE: 3x3-5.57mm.
660075-4 67.00 6600.00 SMARTS Consortium: 0.9-meter Telescope BLANK 660075-4 Size: 4x4 Thick: 5.57
N/A 67.00 6600.00 WIYN 3.5-meter Telescope Hydra N/A SIZE: 4x4-5.57mm.
narrow Halpha 6600 (CTIO set) 75.00 6600.00 SOAR Telescope Goodman, SOI 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
N/A 67.00 6600.00 WIYN 3.5-meter Telescope Hydra N/A SIZE: 4x4-5.57mm.
BTFI_6600/20 BTFI 19.30 6600.50 SOAR Telescope SAM, SAMI
BTFI 6600 / 20 19.30 6600.50 SOAR Telescope SAM, SAM-FP
kp1346 78.00 6606.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1346
KP1391 68.39 6608.47 Nicholas U. Mayall 4-meter Telescope KOSMOS KP1391 KP1391 KOSMOS Approved KPNO 4in. Filter.
kp6606a 71.00 6611.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter halpha set combined
H-alpha6_2 74.00 6618.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha6_2 H-alpha6_2 =+6nm set2
H-alpha+4nm 60.00 6618.00 WIYN 0.9-meter Telescope S2KB H-alpha+4nm H-alpha+4nm 10-2007
H-alpha+4nm 60.00 6618.00 WIYN 0.9-meter Telescope S2KB H-alpha+4nm Bandpass.
HaC_G0311 69.00 6620.00 Gemini North GMOS-N HaC_G0311 HaC_G0311
H-alpha +6nm 67.00 6620.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters H-alpha +6nm H-alpha +6nm Andover
Showing 901 - 950 of 1258

Updated on June 27, 2022, 11:32 am