Filter Information
Plots and data included with most lists.
- Important Filter Information - updated Mar. 13, 2013
- Filters for the Mosaic Imager
- KPNO 4-Inch Filter List - includes Hale-Bopp comet filters.
- KPNO 2-Inch Filter List
- RC Spectrograph Order Separation Filters
- Echelle Spectrograph Filters Pre-slit and Post-slit
- Phoenix Order Sorting Filters
- NEWFIRM Filter Information
- FLAMINGOS Filters
- KOSMOS Filters
- GoldCam Spectrograph Order Separation Filters
- WIYN Imager Filter List 4 x 4 inch
- ODI Filter Information 428 x 445 mm
- WIYN Bench Spectrograph Filter List
- WHIRC Filters
- WIYN 0.9 Meter Filter Information
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 |
|---|---|---|---|---|---|---|---|
| V Tek set#2 5438/1026 | 1026.00 | 5438.00 | SMARTS Consortium: 0.9-meter Telescope | BLANK | V Tek set#2 5438/1026 | Size: 3x3 | |
| 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. |
| VR Bernstein k1040 *** Retired! | Nicholas U. Mayall 4-meter Telescope | Mosaic | VR Bernstein k1040 *** Retired! | VR Bernstein k1040 *** Retired! | Below is a plot of the transmission of this filter when used at telescopes with differing focal ratios and central obscurations; the KPNO 4m (f/3.1), the CTIO 4m (f/2.9), and the WIYN 0.9m (f/7.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=5934A, FWHM=2079A, PEAK TRANSMISSION=95.3%. | ||
| 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. |
| Wash set - t1 | 651.00 | 6251.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Wash set - t1 | Wash set - t1 | |
| Washington - c | 1046.00 | 3979.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington - c | Washington - c | Corning glass |
| Washington - m | 1012.00 | 5097.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington - m | Washington - m | Corning glass |
| Washington 51 | 174.00 | 5142.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington 51 | Washington 51 | Replaces KP1525 |
| Washington C | 1044.00 | 3866.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington C | Washington C | Revised 8/95 (Schott glass) |
| Washington C | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington C | Washington C | |||
| Washington c48 | 200.00 | 4898.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington c48 | Washington c48 | Washington set, property of Doug Welch, McMaster Univ |
| Washington M | 1112.00 | 5141.00 | KPNO 2.1-meter Telescope | KPNO 4-Inch Filters | Washington M | Washington M | Revised 8/95 (Schott glass) |
| WG-320 | 0.00 | 0.00 | KPNO 2.1-meter Telescope | GoldCam | WG-320 | WG-320 | Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined. |
| WG-345 | 0.00 | 0.00 | KPNO 2.1-meter Telescope | GoldCam | WG-345 | WG-345 | Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined. |
| WG-345 | 0.00 | 0.00 | Nicholas U. Mayall 4-meter Telescope | RC Spectrograph | WG-345 | WG-345 | Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined. |
| WG-360 | 0.00 | 0.00 | KPNO 2.1-meter Telescope | GoldCam | Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined. | ||
| WG-360 | 0.00 | 0.00 | Nicholas U. Mayall 4-meter Telescope | RC Spectrograph | WG-360 | WG-360 | Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined. |
| wh Bk-7 c6016 | 5000.00 | 6500.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | |||
| wh Bk-7 k1016 | 6800.00 | 5600.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wh Bk-7 k1016 | wh Bk-7 k1016 | 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. |
| Wide VR filter VR | 2410.00 | 6000.00 | SOAR Telescope | Goodman, SOI | Wide VR filter VR | 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting) | |
| Wing CN | 116.00 | 8123.00 | SOAR Telescope | Goodman, SOI | Wing CN | Wing CN | 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting) |
| Wing TiO | 125.00 | 7779.00 | SOAR Telescope | Goodman, SOI | Wing TiO | Wing TiO | 4 x 4 Inches square filters for imaging with the Goodman HTS or with SOI (SOI can also use 3x3 inch filters without vignetting) |
| wr475 WR 475 k1022 | 51.27 | 4764.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wr475 WR 475 k1022 | wr475 WR 475 k1022 | 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. |
| wr475 WR 475 k1022 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wr475 WR 475 k1022 | wr475 WR 475 k1022 | Below is a plot of this filter as simulated in different f/ratio beams. At the KPNO 4m f/3.1 the properties of this filter are: CWL=4749A FWHM=51.32A PEAK TRANSMISSION=79.2%. | ||
| wrc3 WR CIII k1021 | 51.71 | 4666.15 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wrc3 WR CIII k1021 | wrc3 WR CIII k1021 | 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. |
| wrc3 WR CIII k1021 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wrc3 WR CIII k1021 | wrc3 WR CIII k1021 | Below is a plot of this filter as simulated in different f/ratio beams. At the KPNO 4m f/3.1 the properties of this filter are: CWL=4657A FWHM=52.6A PEAK TRANSMISSION=68.23% | ||
| wrc4 WR CIV k1024 | 41.79 | 5828.71 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wrc4 WR CIV k1024 | wrc4 WR CIV k1024 | 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. |
| wrc4 WR CIV k1024 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wrc4 WR CIV k1024 | wrc4 WR CIV k1024 | Below is a plot of this filter as simulated in different f/ratio beams. At the KPNO 4m f/3.1 the properties of this filter are: CWL=5819A FWHM=42.17A PEAK TRANSMISSION=71.36% | ||
| wrhe2 WR HeII k1023 | 50.31 | 4702.60 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wrhe2 WR HeII k1023 | wrhe2 WR HeII k1023 | 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. |
| wrhe2 WR HeII k1023 | Nicholas U. Mayall 4-meter Telescope | Mosaic | wrhe2 WR HeII k1023 | wrhe2 WR HeII k1023 | Below is a plot of this filter as simulated in different f/ratio beams. At the KPNO 4m the properties of this filter are: CWL=4695A FWHM=51.34A PEAK TRANSMISSION=74.83%. | ||
| Y | 1072.00 | 10204.00 | Gemini North | GNIRS | Y | Y | |
| Y | 1000.00 | 1.00 | SOAR Telescope | SPARTAN IR | |||
| Y | 978.00 | 10200.00 | Gemini North | NIRI | Y | Y | |
| Y | 1005.00 | 10200.00 | Gemini South | FLAMINGOS2 | Y | Y | |
| Y | 10381.00 | Víctor M. Blanco 4-meter Telescope | ISPI | ISPI Broad Band Filter. Wavelengths @80% (micron): BW 0.1457mu | |||
| y Str"m. 4x4 | 244.00 | 5478.00 | WIYN 3.5-meter Telescope | Hydra | y Str"m. 4x4 | SIZE: 4x4-9.74mm. | |
| y Str"m. 4x4 | 244.00 | 5478.00 | WIYN 3.5-meter Telescope | Hydra | y Str"m. 4x4 | SIZE: 4x4-9.74mm. | |
| y Str"m. 4x4 5497/241 | 244.00 | 5478.00 | SMARTS Consortium: 0.9-meter Telescope | BLANK | y Str"m. 4x4 5497/241 | Size: 4x4 Thick: 9.74 | |
| Y_G0323 | 1023.00 | 10100.00 | Gemini South | GMOS-S | Y_G0323 | Y_G0323 | |
| Y_G0323 | 1023.00 | 10100.00 | Gemini North | GMOS-N | Y_G0323 | Y_G0323 | |
| Y_G0344 | 1023.00 | 10100.00 | Gemini South | GMOS-S | Y_G0344 | Y_G0344 | |
| YALO B | SMARTS 1.3-meter Telescope | ANDICAM | YALO B | YALO B | Legacy Filter | ||
| YALO wide R | SMARTS 1.3-meter Telescope | ANDICAM | YALO wide R | YALO wide R | Legacy Filter | ||
| z Gunn | WIYN 3.5-meter Telescope | Hydra | SIZE: 4x4 | ||||
| z Gunn | WIYN 3.5-meter Telescope | Hydra | SIZE: 3x3 | ||||
| z Gunn | WIYN 3.5-meter Telescope | Hydra | SIZE: 4x4 | ||||
| z Gunn | WIYN 3.5-meter Telescope | Hydra | SIZE: 3x3 | ||||
| z Gunn 9100/1400 | SMARTS Consortium: 0.9-meter Telescope | BLANK | Size: 4x4 | ||||
| z Gunn 9100/1400 | SMARTS Consortium: 0.9-meter Telescope | BLANK | Size: 3x3 | ||||
| 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. |
Updated on June 27, 2022, 11:32 am