Functions | |
| VimosBool | VmAstroComputeCD (VimosTableArray *calTables, const VimosImage *refImage) |
| Fit a CD matrix (pointing and rotation). | |
| VimosBool | VmAstroComputeCO (VimosImage *calImage, float tolrad, float sigClip, VimosTable *stmcTable, unsigned int tflag, double tdevmax) |
| Fit a CO matrix (scale and distortions). | |
| VimosTable * | resetAstroTable (int count, char *filterName) |
| Build Astrometric Table. | |
| VimosTable * | resetStarMatchTable (int count, int naxis1, int naxis2) |
| Build StarMatchTable Table. | |
| VimosTable * | shiftStarMatch (VimosTable **starMatchTable) |
| Build StarMatchTable Table. | |
| int | calcres (VimosTable *o_star, VimosTable *a_star, int imatch[], int nmatch, double *rms) |
| Compute the RMS error of the CCD <-> Sky transformation. | |
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Compute the RMS error of the CCD <-> Sky transformation.
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Build Astrometric Table.
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Build StarMatchTable Table.
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Build StarMatchTable Table.
for positive X quads (quad 1 and 4) it is: new X = oldX-crpix1-0.5 for neg. X quads (2 and 3) new X = -crpix1+oldX+0.5 for pos. Y quads (1 and 2) new Y = oldY-crpix2-0.5 for neg. Y quads (3 and 4) new Y = -crpix2+oldY+0.5
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Fit a CD matrix (pointing and rotation).
The reference image refImage is used to obtain the image size in pixels of the images from which the input star match tables were created. It is assumed that all images have the same size. The headers of each star match table in the input set is updated with the computed CD matrix.
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Fit a CO matrix (scale and distortions).
NULL, it is taken from stmcTable.An artificial star table with a grid of 10 times 10 points is created and the CCD to sky coordinate transformation is applied to them, computing right ascension and declination. The right ascension and declination are used to build an astrometric table, and from both tables, star table and astrometric table, a star match table is created and the CO matrix is fitted. The result is an image calImage having a CO matrix which comprises wcs and CcdToSky. For details on the temperature check see the documentation for computeVirtualPixels
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1.4.1