07/03/03 48821 CTB Converted to XML format This relation defines the coefficients that are used to transform data from between the Science Instrument Coordinate System (SICS) and the Science Aperture Coordinate System (SIAS). The command that primarily performs this transformation is pmdb -update, as transformations between the V1-V2-V3, SICS, and SIAS are commonly required. See the description for the relation QAAPERTURES (or aperture_def) for more details on the various aperture coordinate systems. C10 This field specifies the aperture coordinate system ID. It is the ID of the aperture coordinate system used to specify the location of the target within the aperture. It is the aperture id concatenated with the aperture coordinate system id. Defined in ST-ICD-26 part III appendix A. Field 1 of the first aj record if assigned by IMTOOL. C*17 effective date (YYYY.DDD:HH:MM:SS) before which the data for this aperture must not be used I*2 This field is the index of the record for the aperture coord. ID. The max. value is 21 because of the max. poly. degree n (qaapol) is 5. These coeff. are subscripted jk (j = 0 to n, k = 0 to j). for a 5th degree poly. jk are ordered as: 00, 10, 11, 20, 21, 22, 30, 31, 32, 33, 40, 41, 42, 43, 44, 50, 51, 52, 53, 54, and 55. This id is 1 for jk = 00, ... 21 for jk = 55. It is the record number of the ak type record when assigned by IMTOOL. R*8 th ak record if assigned by IMTOOL.]]> R*8 th ak record if assigned by IMTOOL.]]> R*8 th ak record if assigned by IMTOOL.]]> R*8 th ak record if assigned by IMTOOL.]]> SICS_SIAS_COEF Coefficients For Transform Between Aperture Coord. Relation qaapertures.* OPUS unique clustered