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
VR k1039 *** New! 2216.00 5940.00 Nicholas U. Mayall 4-meter Telescope Mosaic VR k1039 *** New! VR k1039 *** New! NOTE: This filter is a replacement for k1040. 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.
VR Bernstein k1040 *** Retired! 2119.56 5944.95 Nicholas U. Mayall 4-meter Telescope Mosaic VR Bernstein k1040 *** Retired! VR Bernstein k1040 *** Retired! NOTE: This filter was damaged in June 2011 and is retired. 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.
Mould I 2111.00 8268.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Mould I Mould I made with Mould parameters
kp1268_13 2093.00 8320.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1268_13 mould system
kp370 2088.00 5712.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp370 coated quartz blocking filter
kp370 2088.00 5712.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp370 coated quartz blocking filter
I Harris 2077.00 8333.00 WIYN 0.9-meter Telescope S2KB I Harris I Harris 11-2001
kp1529 2071.00 8270.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1529 harris I - omega
kp1530 2071.00 8274.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1530 harris I - omega
kp1532 2056.00 8295.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1532 harris I CCDPHOT - omega
kp1531 2055.00 8280.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1531 Arlo's harris I CCDPHOT - omega
kp1268_14 2007.00 8310.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1268_14 mould system
SDSS i' 2006.00 7731.00 SOAR Telescope Goodman, SOI SDSS i' SDSS i' 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
kp1314b 2006.00 8291.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1314b nearly mould I-omega
z SDSS k1020 *** Retired! 2000.00 9400.00 Nicholas U. Mayall 4-meter Telescope Mosaic z SDSS k1020 *** Retired! z SDSS k1020 *** Retired! NOTE: This filter was damaged in June 2011 and is retired. The CTIO SDSS z' filter (c6020) can be requested as a replacement, but it's availability will depend on demand at CTIO. 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.
z SDSS c6020 2000.00 9400.00 Nicholas U. Mayall 4-meter Telescope Mosaic z SDSS c6020 z SDSS c6020 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.
It Tyson I c6025 *** Not Available 2000.00 8800.00 Nicholas U. Mayall 4-meter Telescope Mosaic It Tyson I c6025 *** Not Available It Tyson I c6025 *** 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.
kp371 1999.00 6042.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp371 coated gg-475 blocking for #793
kp371 1999.00 6042.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp371 coated gg-475 blocking for #794
Mould I 1995.00 8270.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters Mould I Mould I Many pinholes, spare - Not available
kp1314a 1966.00 8247.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1314a nearly mould I-omega
ORDER_5 1965.00 12750.00 Gemini North GNIRS ORDER_5 ORDER_5
kp1539 1954.00 8244.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp1539 kp1539 Not available
Bessell R 1922.00 6289.00 SOAR Telescope Goodman, SOI Bessell R Bessell R 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
kp1309a 1922.00 8212.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309a nearly mould I-omega - arlo's harris set 5mm quartz
I Nearly-Mould k1005 1914.59 8204.53 Nicholas U. Mayall 4-meter Telescope Mosaic I Nearly-Mould k1005 I Nearly-Mould k1005 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.
kp1268_11 1910.00 8300.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1268_11 mould system I
kp1309c 1877.00 8225.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309c nearly mould I-omega
J 1860.00 12360.00 SOAR Telescope SPARTAN IR
kp1268_12 1851.00 8205.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1268_12 mould system
kp1591 1839.00 8192.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp1591 kp1591 spare
kp1469 1821.00 8204.00 KPNO 2.1-meter Telescope KPNO 4-Inch Filters kp1469 kp1469 2.1 meter set
kp402 1802.00 8291.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter mould system ocli
SAMI-R K-C 1800.00 6550.00 SOAR Telescope SAM, SAMI SAMI-R K-C
kp406 1791.00 8284.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter mould system ocli
kp1309d 1788.00 8220.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309d nearly mould I-omega defect at one edge
SDSS r' 1779.00 6271.00 SOAR Telescope Goodman, SOI SDSS r' SDSS r' 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
4-96 1756.27 4724.00 KPNO 2.1-meter Telescope GoldCam 4-96 4-96 Bandpass Filter.
SDSS g' 1734.00 4737.00 SOAR Telescope Goodman, SOI SDSS g' SDSS g' 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting)
H2O_2045 1701.00 20450.00 Gemini North NIRI H2O_2045 H2O_2045
kp1309b 1698.00 8118.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter kp1309b nearly mould I-omega
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.
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.
4-96 1643.57 4720.96 Nicholas U. Mayall 4-meter Telescope RC Spectrograph 4-96 4-96 Bandpass Filter.
Z_G1101 1643.00 10150.00 Gemini South GSAOI Z_G1101 Z_G1101
J 1629.00 12500.00 Gemini North NIRI J J
J 1626.00 12558.00 Gemini North GNIRS J J
HST "V" 1625.00 5292.00 WIYN 3.5-meter Telescope Hydra HST "V" SIZE: 4x4-5.24mm.

Updated on June 27, 2022, 11:32 am