07/03/03 48821 CTB Converted to XML format "This relation is used to define the values OPUS needs for WCS calculations for observations using dispersive elements. There must be a record in this table for every STIS spectral element (except MIRROR and PRISM) and valid central wavelength (as listed in the proposal instructions). If significant MSM changes are made during the mission that requires different data for different observation times, the valid_date is used by OPUS to fetch the right record. " C8 "STIS/CCD, STIS/MA1, STIS/MA2 are the values of OPUS DGX keyword SS_DTCTR found in qelogsheet.config. " C8 "G140L,G140M,E140M,E140H,X140M,X140H,G230L,G230M,E230M, E230H,X230M,X230H,G230LB,G230MB,G430M,G750L,or G750M. These are the values from OPUS DGX keyword SS_GRTNG that come from qelogsheet.ap_1. " I4 "The central wavelength supplied in the proposal and found in OPUS DGX keyword SS_CWAVE that comes from qelogsheet.min_wave. The allow values are in the proposal instructions. " C17 "YYYY.DDD:HH:MM:SS, the date-time of either the SMS which loads a new dither table or a time preceding the first STIS observation that uses a new dither table. " R4 "Actual wavelength at reference pixel (Angstrom)" R4 "Degrees from axis1 toward axis2 for dispersion. " R4 "Change is wavelength (Angstrom) per pixel. " R4 "Change in sky arcsec along slit per pixel. " R4 "Resolving power at central wavelength. " R4 "Minimum wavelength in spectrum. " R4 "Maximum wavelength in spectrum. " STIS_DISP_TYPE STIS Dispersion Relation OPUS unique clustered