1. Filters
  2. Filters

Filters

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
C Wash 1042.00 3996.00 WIYN 3.5-meter Telescope Hydra SIZE: 3x3-8.11mm.
C Wash 1030.00 4000.00 WIYN 3.5-meter Telescope Hydra C Wash SIZE: 4x4-8.45mm.
C Wash 3996/1042 1042.00 3996.00 SMARTS Consortium: 0.9-meter Telescope BLANK C Wash 3996/1042 Size: 3x3 Thick: 8.11
C Wash 4000/1030 1030.00 4000.00 SMARTS Consortium: 0.9-meter Telescope BLANK C Wash 4000/1030 Size: 4x4 Thick: 8.45
C Washington c6029 1075.00 3850.00 Nicholas U. Mayall 4-meter Telescope Mosaic
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%.
Ca 96.00 3972.00 WIYN 0.9-meter Telescope S2KB Ca Ca 01-2013
Ca H&K line filter WIYN 3.5-meter Telescope Hydra Ca H&K line filter Ca H&K line filter SIZE: 4x4
Ca H&K line filter WIYN 3.5-meter Telescope Hydra Ca H&K line filter Ca H&K line filter SIZE: 4x4
Ca H&K line filter 3960/100 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
CaT_G0309 1525.00 8600.00 Gemini North GMOS-N CaT_G0309 CaT_G0309
CaT_G0333 1525.00 8600.00 Gemini South GMOS-S CaT_G0333 CaT_G0333
CH4ICE 1508.00 22750.00 Gemini North NIRI CH4ICE CH4ICE
CH4LONG 1172.00 16900.00 Gemini North NIRI CH4LONG CH4LONG
CH4long_G1110 1057.00 16900.00 Gemini South GSAOI CH4long_G1110 CH4long_G1110
CH4SHORT 1151.00 15800.00 Gemini North NIRI CH4SHORT CH4SHORT
CH4short_G1109 919.00 15800.00 Gemini South GSAOI CH4short_G1109 CH4short_G1109
CN 168.00 1107.00 WIYN 3.5-meter Telescope WHIRC CN The Pa β 45 and CO-n filters were removed from WHIRC in January 2012 and replaced by the CN and CO-w filters.
CO 710.00 23310.00 SOAR Telescope SPARTAN IR Width [km/s]: 9100. Note that SPARTAN filters are permanently mounted in the instrument, and therefore are always available and need not be specified in Instrument Setup forms.
CO-n 228.00 2293.00 WIYN 3.5-meter Telescope WHIRC CO-n The Pa β 45 and CO-n filters were removed from WHIRC in January 2012 and replaced by the CN and CO-w filters.
CO-w 103.00 2342.00 WIYN 3.5-meter Telescope WHIRC CO-w The Pa β 45 and CO-n filters were removed from WHIRC in January 2012 and replaced by the CN and CO-w filters.
CO20 330.00 22890.00 Gemini North NIRI CO20 CO20
CO2360_G1124 788.00 23600.00 Gemini South GSAOI CO2360_G1124 CO2360_G1124
cont_1 320.00 20400.00 SOAR Telescope SPARTAN IR Width [km/s]: 4660. Note that SPARTAN filters are permanently mounted in the instrument, and therefore are always available and need not be specified in Instrument Setup forms.
cont_2 300.00 21400.00 SOAR Telescope SPARTAN IR Width [km/s]: 4260. Note that SPARTAN filters are permanently mounted in the instrument, and therefore are always available and need not be specified in Instrument Setup forms.
cont_3 320.00 22080.00 SOAR Telescope SPARTAN IR Width [km/s]: 4310. Note that SPARTAN filters are permanently mounted in the instrument, and therefore are always available and need not be specified in Instrument Setup forms.
Cont-203 20336.00 Víctor M. Blanco 4-meter Telescope ISPI ISPI Narrow Band Filters. Wavelengths @80% (micron): 2,062 - 2,0400
Continuum, 2.14 mu 21462.00 Víctor M. Blanco 4-meter Telescope ISPI ISPI Narrow Band Filters. Wavelengths @80% (micron): 2,1385 - 2,1532
CuS04 Crystal 0.00 0.00 KPNO 2.1-meter Telescope GoldCam CuS04 Crystal CuS04 Crystal Sharp-Cut Filter. Cutoff filter: no transmission peak, FWHM is undefined.
CUSO4 liq 0.00 0.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter
CUSO4 liq 0.00 0.00 KPNO 2.1-meter Telescope KPNO 2-Inch Filter
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.
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%
DDO 51 Wash. set 133.00 5121.00 WIYN 3.5-meter Telescope Hydra DDO 51 Wash. set DDO 51 Wash. set SIZE: 4x4-7.76mm.
DDO 51 Wash. set 133.00 5121.00 WIYN 3.5-meter Telescope Hydra DDO 51 Wash. set DDO 51 Wash. set SIZE: 4x4-7.76mm.
DDO 51 Wash. set 5130/155 133.00 5121.00 SMARTS Consortium: 0.9-meter Telescope BLANK DDO 51 Wash. set 5130/155 Size: 4x4 Thick: 7.76
DECam g 1003.70 4770.80 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam g DECam g
DECam i 1281.00 7774.20 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam i DECam i
DECam N662 170.00 6622.40 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam N662
DECam N964 95.00 9640.00 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam N964
DECam r 1276.20 6371.30 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam r DECam r
DECam Y 674.50 9886.30 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam Y DECam Y
DECam z 1289.30 9157.90 Víctor M. Blanco 4-meter Telescope Dark Energy Camera DECam z DECam z
DS920_G0312 190.00 9200.00 Gemini North GMOS-N DS920_G0312 DS920_G0312
EO_466 440.00 4670.00 Gemini North ALOPEKE EO_466 EO_466 not convolved with dichroic
EO_466 440.00 4670.00 Gemini South ZORRO EO_466 EO_466 not convolved with dichroic
EO_562 437.00 5622.00 Gemini North ALOPEKE EO_562 EO_562 not convolved with dichroic
EO_562 437.00 5622.00 Gemini South ZORRO EO_562 EO_562 not convolved with dichroic
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