wiki:Filters

Filters

Installed

The C0 channel has a 10-position filter wheel for 50-mm round filters. The following filters are currently installed:

  • SDSS ugr
  • Bessell BV
  • Strömgren Sy
  • 4871/49, 5016/51, 4772/44, and 6630/40

We intend that the SDSS ugr filters be always installed in the filter wheel. The CATT will decide which additional filters will be installed in the other seven slots in the filter wheel.

The following fixed filters are installed in C1:

  • SDSS i

The following fixed filter is installed in C2:

  • WFCAM ZY split-filter

The following fixed filter is installed in C3:

  • MKO JH split-filter

The following fixed filter is installed in C4:

  • SDSS z

Characteristics

The table shows the approximate bandpasses of the ugriZYJH filters.

NameBandpass<λ>Δλ<λ>/Δλ
(µm)(µm)(µm)
u0.328-0.3860.3570.0586.2
g0.407-0.5330.4700.1263.7
r0.560-0.6750.6180.1455.4
i0.700-0.8200.7600.1256.3
Z0.830-0.9250.8780.0959.2
Y0.970-1.0701.0200.10010.2
J1.170-1.3301.2500.1607.8
H1.490-1.7801.6350.2905.6
Last modified 21 months ago Last modified on Sep 21, 2015 2:12:10 AM