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 |
---|---|---|---|---|---|---|---|
Test | Hydra | ||||||
U k1001 | k1001, k1001frs, KPNO Mosaic Standard UBVRI and White Filters | k1001, k1001frs | 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. | ||||
U Harris Solid | 556.00 | 3645.00 | WIYN 0.9-meter Telescope | S2KB | U Harris Solid | U Harris Solid | 03-2004 |
U Harris Solid | 556.00 | 3645.00 | WIYN 0.9-meter Telescope | S2KB | U Harris Solid | Bandpass. | |
B Harris | 1070.00 | 4279.00 | WIYN 0.9-meter Telescope | S2KB | B Harris | B Harris | 04-2003 |
V Harris | 936.00 | 5399.00 | WIYN 0.9-meter Telescope | S2KB | V Harris | V Harris | 04-2003 |
R Harris | 1509.00 | 6404.00 | WIYN 0.9-meter Telescope | S2KB | R Harris | R Harris | 04-2003 |
I Harris | 2077.00 | 8333.00 | WIYN 0.9-meter Telescope | S2KB | I Harris | I Harris | 11-2001 |
H-alpha | 59.00 | 6577.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha | H-alpha | 10-2007 |
H-alpha | 59.00 | 6577.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha | Bandpass. | |
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. | |
H-alpha+8nm | 60.00 | 6658.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha+8nm | H-alpha+8nm | 10-2007 |
H-alpha+8nm | 60.00 | 6658.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha+8nm | Bandpass. | |
H-alpha+12nm | 63.00 | 6700.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha+12nm | H-alpha+12nm | 10-2007 |
H-alpha+12nm | 63.00 | 6700.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha+12nm | Bandpass. | |
H-alpha+16nm | 60.00 | 6742.00 | WIYN 0.9-meter Telescope | S2KB | H-alpha+16nm | H-alpha+16nm | 4-2008 |
Stromgren u | 34.00 | 3467.00 | WIYN 0.9-meter Telescope | S2KB | Stromgren u | Stromgren u | 01-2013 |
Stromgren v | 133.00 | 4117.00 | WIYN 0.9-meter Telescope | S2KB | Stromgren v | Stromgren v | 01-2013 |
Stromgren b | 207.70 | 4718.00 | WIYN 0.9-meter Telescope | S2KB | Stromgren b | Stromgren b | 01-2013 |
Stromgren y | 227.00 | 5514.00 | WIYN 0.9-meter Telescope | S2KB | Stromgren y | Stromgren y | 01-2013 |
Hb-narrow | 30.00 | 4854.00 | WIYN 0.9-meter Telescope | S2KB | Hb-narrow | Hb-narrow | 01-2013 |
Hb-wide | 139.00 | 4875.00 | WIYN 0.9-meter Telescope | S2KB | Hb-wide | Hb-wide | 01-2013 |
Ca | 96.00 | 3972.00 | WIYN 0.9-meter Telescope | S2KB | Ca | Ca | 01-2013 |
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%. | ||
823 823_v2 k1047 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v2 k1047 | 823 823_v2 k1047 | 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= 8193.49A FWHM= 68.30A PEAK TRANSMISSION= 89.71% at 8182A | ||
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% | ||
Bw NDWFS k1025 | 1275.21 | 4110.78 | Nicholas U. Mayall 4-meter Telescope | Mosaic | Bw NDWFS k1025 | Bw NDWFS k1025 | 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. Note: This filter was called the NDWFS UB filter in 1997-1998. |
Bw NDWFS k1025 | Nicholas U. Mayall 4-meter Telescope | Mosaic | Bw NDWFS k1025 | Bw NDWFS k1025 | |||
Bw NDWFS k1025 | Nicholas U. Mayall 4-meter Telescope | Mosaic | Bw NDWFS k1025 | Bw NDWFS k1025 | 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) and the CTIO 4m (f/2.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=4091A, FWHM=1250A, PEAK TRANSMISSION=91.7%. | ||
815 815_v1 k1026 | 70.36 | 8152.10 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v1 k1026 | 815 815_v1 k1026 | 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. Note:In December 2003 a replacement for this filter (k1046) was purchased. See below for a comparison between the two filters. |
815 815_v1 k1026 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v1 k1026 | 815 815_v1 k1026 | |||
815 815_v1 k1026 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v1 k1026 | A comparison of this filter with the newer version of this filter (k1046): | |||
815 815_v1 k1026 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v1 k1026 | ||||
815 815_v1 k1026 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v1 k1026 | 815 815_v1 k1026 | 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) and the CTIO 4m (f/2.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=8087A, FWHM=71A, PEAK TRANSMISSION=93%. | ||
823 823_v1 k1027 | 70.61 | 8232.04 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v1 k1027 | 823 823_v1 k1027 | 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. Note: In December 2003 a replacement for this filter (k1047) was purchased. See below for a comparison of the two filters. |
823 823_v1 k1027 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v1 k1027 | 823 823_v1 k1027 | |||
823 823_v1 k1027 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v1 k1027 | A comparison of this filter with the newer version (k1047): | |||
823 823_v1 k1027 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v1 k1027 | ||||
823 823_v1 k1027 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v1 k1027 | 823 823_v1 k1027 | 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) and the CTIO 4m (f/2.9). At the KPNO 4m the properties of this filter are: CWL=8170A, FWHM=71A, PEAK TRANSMISSION=91.5%. | ||
918R 918R_v1 k1028 | 81.22 | 9210.96 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 918R 918R_v1 k1028 | 918R 918R_v1 k1028 | 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. |
918R 918R_v1 k1028 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 918R 918R_v1 k1028 | 918R 918R_v1 k1028 | |||
918R 918R_v1 k1028 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 918R 918R_v1 k1028 | ||||
918R 918R_v1 k1028 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 918R 918R_v1 k1028 | 918R 918R_v1 k1028 | 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) and the CTIO 4m (f/2.9). At the KPNO 4m f/3.1 the properties of this filter are: CWL=9140A, FWHM=81A, PEAK TRANSMISSION=84.7%. | ||
gd DECam k1035 *** New! | 1524.00 | 4744.90 | Nicholas U. Mayall 4-meter Telescope | Mosaic | gd DECam k1035 *** New! | gd DECam k1035 *** New! | 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. |
815 815_v2 k1046 | 68.53 | 8152.64 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v2 k1046 | 815 815_v2 k1046 | 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. Note: This is a replacement for the old Rhoads 815 filter (k1026) |
815 815_v2 k1046 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v2 k1046 | A comparison of this filter with the older version of this filter (k1026): | |||
815 815_v2 k1046 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v2 k1046 | 815 815_v2 k1046 | |||
815 815_v2 k1046 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 815 815_v2 k1046 | 815 815_v2 k1046 | 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= 8109.85A FWHM= 68.62A PEAK TRANSMISSION= 81.42% at 8122A |
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Updated on June 27, 2022, 11:32 am