Phase 2 Proposal Instructions for Cycle 10

5.11 Spectral Element [Sp_Element]

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The desired Spectral Element(s) should be entered. Spectral Elements include filters (F), gratings and grisms (G), echelles (E), prisms (PRISM), polarizers (POL), and mirrors (MIRROR). The names of the filters, gratings, grisms, and echelles include the wavelength of the approximate midpoint of the bandpass, in nanometers. More than one element may be specified, if necessary, using a comma to separate them (after confirming that the different elements can be used simultaneously, e.g., that they are not on the same filter wheel). Possibilities are listed in Part B of these Instructions and are described in the Instrument Handbooks.

Examples of the Spectral Element designations are the following:

F122M	A medium-band (M) WFPC2 filter (F) with midpoint of coverage near 1220 �
G140L	A low-dispersion (L) STIS grating (G) with midpoint of coverage near 1400 �
G206	A NICMOS grism (G) with midpoint of coverage near 2.06 microns
E230H	A high-dispersion (H) STIS echelle (E) with midpoint of coverage near 2300 �
POLQN33	WFPC2 polarizer at 33 degree angle