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Space Telescope Science Institute |
Cycle 21 Phase II Proposal Instructions |
help@stsci.edu |
The desired Spectral Element should be chosen. Spectral Elements include filters (F), gratings and grisms (G), echelles (E), prisms (PR), polarizers (POL), linear ramps (FR), quadrant filters (FQ) and mirrors (MIRROR). The names of the filters, gratings, grisms, and echelles include the wavelength of the approximate midpoint of the bandpass, in nanometers.
Polarizer or Crossed FilterMore than one element may be specified, if necessary, using these fields Choose the desired element from the list provided in Part II of these Instructions. They are also are described in the Instrument Handbooks.