Mosaic Filters
Currently Available Mosaic Filters
The following filters are now available in the full 5.75 inch size required for the Mosaic CCD imagers. If you would like to bring your own filters, the physical size should be 146 x 146 mm, and the filter should be 12 mm thick. Properties for the CTIO interference filters shown below are at the f/2.9 of the CTIO 4-m prime focus. Properties shown below for the 4meter filters are for parallel light. Note that most KPNO Mosaic filters (except for the U filter) are parfocal while at CTIO the filters are NOT parfocal - approximate focus offsets can be found on the CTIO Mosaic filters page.
As of April 24, 2012 all CTIO Mosaic-2 filters have been transferred to KPNO and are available for use with Mosaic-1.
IMPORTANT: All filters must be referred to by specific names (listed here) when using the instrument control software at the telescope.
For more information on a filter (e.g. to view transmission curves), click on the filter name. All KPNO Mosaic filters were measured at NOAO.
Mosaic
| Filter | FWHM (Å) | CWL (Å) | Telescope | Instrument | Plot | Data | Comments |
|---|---|---|---|---|---|---|---|
| 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. |
| i SDSS k1019 | 1539.89 | 7726.28 | Nicholas U. Mayall 4-meter Telescope | Mosaic | i SDSS k1019 | i SDSS k1019 | 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. |
| i SDSS c6019 | 1548.00 | 7732.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | i SDSS c6019 | i SDSS c6019 | 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. |
| I Nearly-Mould k1005 | Nicholas U. Mayall 4-meter Telescope | Mosaic | I Nearly-Mould k1005 | ||||
| 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. |
| I Nearly-Mould k1005 | Nicholas U. Mayall 4-meter Telescope | Mosaic | I Nearly-Mould k1005 | I Nearly-Mould k1005 | |||
| I c6028 | 1500.00 | 8050.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | I c6028 | I c6028 | 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. |
| ha8 H-alpha+8nm k1011 | 81.33 | 6654.19 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha8 H-alpha+8nm k1011 | ha8 H-alpha+8nm k1011 | 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. |
| ha8 H-alpha+8nm k1011 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha8 H-alpha+8nm k1011 | ha8 H-alpha+8nm k1011 | 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=6634A, FWHM=81A, PEAK TRANSMISSION=89.2%. | ||
| ha8 H-alpha+8nm c6011 | 80.00 | 6650.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha8 H-alpha+8nm c6011 | ha8 H-alpha+8nm c6011 | 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. |
| ha4 H-alpha+4nm k1010 | 80.48 | 6620.52 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha4 H-alpha+4nm k1010 | ha4 H-alpha+4nm k1010 | 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. |
| ha4 H-alpha+4nm k1010 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha4 H-alpha+4nm k1010 | ha4 H-alpha+4nm k1010 | 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=6593A, FWHM=81A, PEAK TRANSMISSION=91.1%. | ||
| ha16 H-alpha+16nm k1013 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha16 H-alpha+16nm k1013 | ha16 H-alpha+16nm k1013 | 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=6705A, FWHM=81A, PEAK TRANSMISSION=91.7%. | ||
| ha16 H-alpha+16nm k1013 | 81.10 | 6730.72 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha16 H-alpha+16nm k1013 | ha16 H-alpha+16nm k1013 | 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. |
| ha12 H-alpha+12nm k1012 | 82.95 | 6698.53 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha12 H-alpha+12nm k1012 | ha12 H-alpha+12nm k1012 | 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. |
| ha12 H-alpha+12nm k1012 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha12 H-alpha+12nm k1012 | ha12 H-alpha+12nm k1012 | 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=6672A, FWHM=83A, PEAK TRANSMISSION=87.3%. | ||
| 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. |
| ha H-alpha k1009 | Nicholas U. Mayall 4-meter Telescope | Mosaic | ha H-alpha k1009 | ha H-alpha k1009 | 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=6550A, FWHM=80A, PEAK TRANSMISSION=93.7%. | ||
| 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. |
| Gn Steidel k1042 | 762.13 | 4819.66 | Nicholas U. Mayall 4-meter Telescope | Mosaic | Gn Steidel k1042 | Gn Steidel k1042 | 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. |
| 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. |
| g SDSS k1017 | 1395.73 | 4750.58 | Nicholas U. Mayall 4-meter Telescope | Mosaic | g SDSS k1017 | g SDSS k1017 | 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. |
| g SDSS c6017 | 1537.00 | 4813.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | g SDSS c6017 | g SDSS c6017 | 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. |
| D51 DDO 51 k1008 | 162.90 | 5145.20 | Nicholas U. Mayall 4-meter Telescope | Mosaic | D51 DDO 51 k1008 | D51 DDO 51 k1008 | 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. |
| D51 DDO 51 k1008 | Nicholas U. Mayall 4-meter Telescope | Mosaic | D51 DDO 51 k1008 | D51 DDO 51 k1008 | 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=5132A FWHM=161A PEAK TRANSMISSION=85.1% | ||
| D51 DDO 51 c6008 | 154.00 | 5130.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | D51 DDO 51 c6008 | D51 DDO 51 c6008 | 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. |
| C Washington k1006 | 1034.00 | 3860.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | C Washington k1006 | C Washington k1006 | 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. |
| C Washington k1006 | Nicholas U. Mayall 4-meter Telescope | Mosaic | C Washington k1006 | C Washington k1006 | 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=3892A, FWHM=1030A, PEAK TRANSMISSION=77.4%. | ||
| C Washington c6029 | 1075.00 | 3850.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | |||
| 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%. | ||
| 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. |
| B Harris k1002 | 993.88 | 4381.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | B Harris k1002 | B Harris k1002 | 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. |
| B Harris k1002 | Nicholas U. Mayall 4-meter Telescope | Mosaic | B Harris k1002 | B Harris k1002 | |||
| B Harris k1002 | Nicholas U. Mayall 4-meter Telescope | Mosaic | B Harris k1002 | ||||
| B Harris c6002 | 990.00 | 4360.00 | Nicholas U. Mayall 4-meter Telescope | Mosaic | B Harris c6002 | B Harris c6002 | 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. |
| 973 BATC k1065 ** | Nicholas U. Mayall 4-meter Telescope | Mosaic | 973 BATC k1065 ** | 973 BATC k1065 ** | 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. | ||
| 973 BATC k1065 ** | Nicholas U. Mayall 4-meter Telescope | Mosaic | 973 BATC k1065 ** | 973 BATC k1065 ** | |||
| 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%. | ||
| 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. |
| 918 BATC k1064 ** | Nicholas U. Mayall 4-meter Telescope | Mosaic | 918 BATC k1064 ** | 918 BATC k1064 ** | 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. | ||
| 918 BATC k1064 ** | Nicholas U. Mayall 4-meter Telescope | Mosaic | 918 BATC k1064 ** | 918 BATC k1064 ** | |||
| 848 BATC k1063 ** | Nicholas U. Mayall 4-meter Telescope | Mosaic | 848 BATC k1063 ** | 848 BATC k1063 ** | 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. | ||
| 848 BATC k1063 ** | Nicholas U. Mayall 4-meter Telescope | Mosaic | 848 BATC k1063 ** | 848 BATC k1063 ** | |||
| 823 823_v2 k1047 | 68.02 | 8238.79 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v2 k1047 | 823 823_v2 k1047 | 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 of the old Rhoads 823 filter (k1027) was purchased. See below for a comparison of the two filters. |
| 823 823_v2 k1047 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v2 k1047 | 823 823_v2 k1047 | |||
| 823 823_v2 k1047 | Nicholas U. Mayall 4-meter Telescope | Mosaic | 823 823_v2 k1047 | A comparison of this filter with the newer version (k1047): |
Below are plots of some of our filter sets. Click on the plot to view full size.
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| Harris Filters | H-alpha Filters | SDSS and Washington Filters | OIII and DDO51 Filters | Wolf-Rayet Filters |
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| Rhoads Filters | Windhorst BATC Filters |
Notes
* The [OIII] filter is not a good match for the 0.9-m -- a replacement has been proven difficult to construct. For now, there are no alternatives.
** Rogier Windhorst and collaborators at Arizona State University are making available to users of MOSAIC-1 at the Mayall 4m telescope and NOAO time on the WIYN 0.9m telescope 15 medium band filters designed to avoid the brightest and most variable night sky lines. The September 2001 issue of the NOAO newsletter (see page 34) contains an article describing the filters along with references describing their past use by Windhorst and collaborators. A figure showing the throughput curves for the filters is available via the link below. The entire ASU/Windhorst filter set includes 15 filters covering from 3370 angstroms to 9730 angstroms. The filters "Windhorst XXXXXXX a" through "Windhorst XXXXX p" in the above list of Mosaic filters (by serial number these are k1051 through k1065 in the list) can be requested for use.
The BATC filter set belongs to Dr. Rogier Windhorst of Arizona State University. Observers wishing to use these filters should request permission to use these filters from Dr. Windhorst (Rogier.Windhorst@asu.edu) prior to submitting their proposals to the NOAO TAC. Dr. Windhorst will inform NOAO when he has given approval for use of the filter. Please make clear in your request to Dr. Windhorst the following information: Proposed Telescope/Instrument; PI of intended proposal; General Science goals of the proposal.
Rogier Windhorst has provided the following figure showing the transmission of the ASU/Windhorst filter set, Click Here. Note that the filters are labeled a through k, m through p, these short "letter" names will allow you to match the filters to the wavelength name. For example, "a" corresponds to filter "337 BATC", etc..
*** The KPNO VR Berstein and KPNO SDSS z' filters were damaged in June 2011. The CTIO VR filter (c6027) is also damaged. The new KPNO VR filter (k1039) is now available as a replacement. The CTIO SDSS z' equivalent (c6020) can be requested as replacement for the KPNO z' filter.
Filters Expected Soon!
- None Pending ...
Updated on June 3, 2021, 6:19 am