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00028 #ifdef HAVE_CONFIG_H
00029 #include <config.h>
00030 #endif
00031
00032 #include <math.h>
00033 #include <cpl.h>
00034 #include <moses.h>
00035 #include <fors_dfs.h>
00036
00037 static int fors_wave_calib_create(cpl_plugin *);
00038 static int fors_wave_calib_exec(cpl_plugin *);
00039 static int fors_wave_calib_destroy(cpl_plugin *);
00040 static int fors_wave_calib(cpl_parameterlist *, cpl_frameset *);
00041
00042 static char fors_wave_calib_description[] =
00043 "This recipe is used to wavelength calibrate MOS/MXU slit spectra contained\n"
00044 "in the rectified arc lamp exposure produced with recipe fors_extract_slits.\n"
00045 "A pattern-matching algorithm is applied as in recipe fors_detect_spectra.\n"
00046 "The input spatial map is used in the production of the wavelength map.\n"
00047 "\n"
00048 "Use recipe fors_wave_calib_lss for LSS data, or for MOS/MXU data where all\n"
00049 "slits have the same offset. For more details on this data reduction strategy\n"
00050 "please refer to the FORS Pipeline User's Manual.\n"
00051 "\n"
00052 "Note that specifying an input GRISM_TABLE will set some of the recipe\n"
00053 "configuration parameters to default values valid for a particular grism.\n"
00054 "\n"
00055 "In the table below the MXU acronym can be alternatively read as MOS.\n\n"
00056 "Input files:\n\n"
00057 " DO category: Type: Explanation: Required:\n"
00058 " SPATIAL_MAP_MXU Calib Spatial map Y\n"
00059 " RECTIFIED_LAMP_MXU Calib Rectified arc exposure Y\n"
00060 " SLIT_LOCATION_MXU Calib Slit location table Y\n"
00061 " CURV_COEFF_MXU Calib Spectral curvature Y\n"
00062 " MASTER_LINECAT Calib Line catalog Y\n"
00063 " GRISM_TABLE Calib Grism table .\n\n"
00064 "Output files:\n\n"
00065 " DO category: Data type: Explanation:\n"
00066 " REDUCED_LAMP_MXU FITS image Calibrated arc lamp exposure\n"
00067 " DISP_COEFF_MXU FITS table Inverse dispersion coefficients\n"
00068 " DISP_RESIDUALS_MXU FITS image Image of modeling residuals\n"
00069 " WAVELENGTH_MAP_MXU FITS image Wavelengths mapped on CCD\n"
00070 " SPECTRAL_RESOLUTION_MXU FITS table Spectral resolution table\n\n";
00071
00072 #define fors_wave_calib_exit(message) \
00073 { \
00074 if (message) cpl_msg_error(recipe, message); \
00075 cpl_image_delete(spectra); \
00076 cpl_image_delete(spatial); \
00077 cpl_image_delete(rainbow); \
00078 cpl_image_delete(residual); \
00079 cpl_image_delete(rectified); \
00080 cpl_image_delete(wavemap); \
00081 cpl_table_delete(grism_table); \
00082 cpl_table_delete(wavelengths); \
00083 cpl_table_delete(maskslits); \
00084 cpl_table_delete(idscoeff); \
00085 cpl_table_delete(restab); \
00086 cpl_table_delete(slits); \
00087 cpl_table_delete(polytraces); \
00088 cpl_vector_delete(lines); \
00089 cpl_propertylist_delete(header); \
00090 cpl_propertylist_delete(save_header); \
00091 cpl_msg_indent_less(); \
00092 return -1; \
00093 }
00094
00095 #define fors_wave_calib_exit_memcheck(message) \
00096 { \
00097 if (message) cpl_msg_info(recipe, message); \
00098 printf("free spectra (%p)\n", spectra); \
00099 cpl_image_delete(spectra); \
00100 printf("free spatial (%p)\n", spatial); \
00101 cpl_image_delete(spatial); \
00102 printf("free rainbow (%p)\n", rainbow); \
00103 cpl_image_delete(rainbow); \
00104 printf("free residual (%p)\n", residual); \
00105 cpl_image_delete(residual); \
00106 printf("free rectified (%p)\n", rectified); \
00107 cpl_image_delete(rectified); \
00108 printf("free wavemap (%p)\n", wavemap); \
00109 cpl_image_delete(wavemap); \
00110 printf("free grism_table (%p)\n", grism_table); \
00111 cpl_table_delete(grism_table); \
00112 printf("free wavelengths (%p)\n", wavelengths); \
00113 cpl_table_delete(wavelengths); \
00114 printf("free maskslits (%p)\n", maskslits); \
00115 cpl_table_delete(maskslits); \
00116 printf("free idscoeff (%p)\n", idscoeff); \
00117 cpl_table_delete(idscoeff); \
00118 printf("free restab (%p)\n", restab); \
00119 cpl_table_delete(restab); \
00120 printf("free slits (%p)\n", slits); \
00121 cpl_table_delete(slits); \
00122 printf("free polytraces (%p)\n", polytraces); \
00123 cpl_table_delete(polytraces); \
00124 printf("free lines (%p)\n", lines); \
00125 cpl_vector_delete(lines); \
00126 printf("free header (%p)\n", header); \
00127 cpl_propertylist_delete(header); \
00128 printf("free save_header (%p)\n", save_header); \
00129 cpl_propertylist_delete(save_header); \
00130 cpl_msg_indent_less(); \
00131 return 0; \
00132 }
00133
00134
00146 int cpl_plugin_get_info(cpl_pluginlist *list)
00147 {
00148 cpl_recipe *recipe = cpl_calloc(1, sizeof *recipe );
00149 cpl_plugin *plugin = &recipe->interface;
00150
00151 cpl_plugin_init(plugin,
00152 CPL_PLUGIN_API,
00153 FORS_BINARY_VERSION,
00154 CPL_PLUGIN_TYPE_RECIPE,
00155 "fors_wave_calib",
00156 "Derive dispersion relation from rectified arc lamp frame",
00157 fors_wave_calib_description,
00158 "Carlo Izzo",
00159 PACKAGE_BUGREPORT,
00160 "This file is currently part of the FORS Instrument Pipeline\n"
00161 "Copyright (C) 2002-2010 European Southern Observatory\n\n"
00162 "This program is free software; you can redistribute it and/or modify\n"
00163 "it under the terms of the GNU General Public License as published by\n"
00164 "the Free Software Foundation; either version 2 of the License, or\n"
00165 "(at your option) any later version.\n\n"
00166 "This program is distributed in the hope that it will be useful,\n"
00167 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
00168 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
00169 "GNU General Public License for more details.\n\n"
00170 "You should have received a copy of the GNU General Public License\n"
00171 "along with this program; if not, write to the Free Software Foundation,\n"
00172 "Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n",
00173 fors_wave_calib_create,
00174 fors_wave_calib_exec,
00175 fors_wave_calib_destroy);
00176
00177 cpl_pluginlist_append(list, plugin);
00178
00179 return 0;
00180 }
00181
00182
00193 static int fors_wave_calib_create(cpl_plugin *plugin)
00194 {
00195 cpl_recipe *recipe;
00196 cpl_parameter *p;
00197
00198
00199
00200
00201
00202 if (cpl_plugin_get_type(plugin) == CPL_PLUGIN_TYPE_RECIPE)
00203 recipe = (cpl_recipe *)plugin;
00204 else
00205 return -1;
00206
00207
00208
00209
00210
00211 recipe->parameters = cpl_parameterlist_new();
00212
00213
00214
00215
00216
00217 p = cpl_parameter_new_value("fors.fors_wave_calib.dispersion",
00218 CPL_TYPE_DOUBLE,
00219 "Expected spectral dispersion (Angstrom/pixel)",
00220 "fors.fors_wave_calib",
00221 0.0);
00222 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "dispersion");
00223 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00224 cpl_parameterlist_append(recipe->parameters, p);
00225
00226
00227
00228
00229
00230 p = cpl_parameter_new_value("fors.fors_wave_calib.peakdetection",
00231 CPL_TYPE_DOUBLE,
00232 "Initial peak detection threshold (ADU)",
00233 "fors.fors_wave_calib",
00234 0.0);
00235 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "peakdetection");
00236 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00237 cpl_parameterlist_append(recipe->parameters, p);
00238
00239
00240
00241
00242
00243 p = cpl_parameter_new_value("fors.fors_wave_calib.wdegree",
00244 CPL_TYPE_INT,
00245 "Degree of wavelength calibration polynomial",
00246 "fors.fors_wave_calib",
00247 0);
00248 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "wdegree");
00249 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00250 cpl_parameterlist_append(recipe->parameters, p);
00251
00252
00253
00254
00255
00256 p = cpl_parameter_new_value("fors.fors_wave_calib.wradius",
00257 CPL_TYPE_INT,
00258 "Search radius if iterating pattern-matching "
00259 "with first-guess method",
00260 "fors.fors_wave_calib",
00261 4);
00262 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "wradius");
00263 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00264 cpl_parameterlist_append(recipe->parameters, p);
00265
00266
00267
00268
00269
00270 p = cpl_parameter_new_value("fors.fors_wave_calib.wreject",
00271 CPL_TYPE_DOUBLE,
00272 "Rejection threshold in dispersion "
00273 "relation fit (pixel)",
00274 "fors.fors_wave_calib",
00275 0.7);
00276 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "wreject");
00277 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00278 cpl_parameterlist_append(recipe->parameters, p);
00279
00280
00281
00282
00283
00284 p = cpl_parameter_new_value("fors.fors_wave_calib.wcolumn",
00285 CPL_TYPE_STRING,
00286 "Name of line catalog table column "
00287 "with wavelengths",
00288 "fors.fors_wave_calib",
00289 "WLEN");
00290 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "wcolumn");
00291 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00292 cpl_parameterlist_append(recipe->parameters, p);
00293
00294
00295
00296
00297
00298 p = cpl_parameter_new_value("fors.fors_wave_calib.startwavelength",
00299 CPL_TYPE_DOUBLE,
00300 "Start wavelength in spectral extraction",
00301 "fors.fors_wave_calib",
00302 0.0);
00303 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "startwavelength");
00304 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00305 cpl_parameterlist_append(recipe->parameters, p);
00306
00307
00308
00309
00310
00311 p = cpl_parameter_new_value("fors.fors_wave_calib.endwavelength",
00312 CPL_TYPE_DOUBLE,
00313 "End wavelength in spectral extraction",
00314 "fors.fors_wave_calib",
00315 0.0);
00316 cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "endwavelength");
00317 cpl_parameter_disable(p, CPL_PARAMETER_MODE_ENV);
00318 cpl_parameterlist_append(recipe->parameters, p);
00319
00320 return 0;
00321 }
00322
00323
00332 static int fors_wave_calib_exec(cpl_plugin *plugin)
00333 {
00334 cpl_recipe *recipe;
00335
00336 if (cpl_plugin_get_type(plugin) == CPL_PLUGIN_TYPE_RECIPE)
00337 recipe = (cpl_recipe *)plugin;
00338 else
00339 return -1;
00340
00341 return fors_wave_calib(recipe->parameters, recipe->frames);
00342 }
00343
00344
00353 static int fors_wave_calib_destroy(cpl_plugin *plugin)
00354 {
00355 cpl_recipe *recipe;
00356
00357 if (cpl_plugin_get_type(plugin) == CPL_PLUGIN_TYPE_RECIPE)
00358 recipe = (cpl_recipe *)plugin;
00359 else
00360 return -1;
00361
00362 cpl_parameterlist_delete(recipe->parameters);
00363
00364 return 0;
00365 }
00366
00367
00377 static int fors_wave_calib(cpl_parameterlist *parlist,
00378 cpl_frameset *frameset)
00379 {
00380
00381 const char *recipe = "fors_wave_calib";
00382
00383
00384
00385
00386
00387
00388 double dispersion;
00389 double peakdetection;
00390 int wdegree;
00391 int wradius;
00392 double wreject;
00393 const char *wcolumn;
00394 double startwavelength;
00395 double endwavelength;
00396
00397
00398
00399
00400
00401 cpl_image *spectra = NULL;
00402 cpl_image *spatial = NULL;
00403 cpl_image *rectified = NULL;
00404 cpl_image *wavemap = NULL;
00405 cpl_image *rainbow = NULL;
00406 cpl_image *residual = NULL;
00407 cpl_image *bimage = NULL;
00408 cpl_table *grism_table = NULL;
00409 cpl_table *wavelengths = NULL;
00410 cpl_table *slits = NULL;
00411 cpl_table *polytraces = NULL;
00412 cpl_table *idscoeff = NULL;
00413 cpl_table *maskslits = NULL;
00414 cpl_table *restab = NULL;
00415 cpl_vector *lines = NULL;
00416 cpl_propertylist *header = NULL;
00417 cpl_propertylist *save_header = NULL;
00418
00419
00420
00421
00422
00423 char version[80];
00424 const char *arc_tag;
00425 const char *reduced_lamp_tag;
00426 const char *wavelength_map_tag;
00427 const char *spatial_map_tag;
00428 const char *disp_residuals_tag;
00429 const char *disp_coeff_tag;
00430 const char *curv_coeff_tag;
00431 const char *slit_location_tag;
00432 const char *spectral_resolution_tag;
00433 int lamp_mxu;
00434 int lamp_mos;
00435 int mxu, mos;
00436 int treat_as_lss = 0;
00437 int nslits;
00438 double mean_rms;
00439 double *xpos;
00440 double mxpos;
00441 int narc, nref;
00442 int nlines;
00443 int rebin;
00444 double *line;
00445 double *fiterror = NULL;
00446 int *fitlines = NULL;
00447 int nx, ny;
00448 double reference;
00449 int i;
00450
00451 char *instrume = NULL;
00452
00453
00454 cpl_msg_set_indentation(2);
00455
00456 if (dfs_files_dont_exist(frameset))
00457 fors_wave_calib_exit(NULL);
00458
00459
00460
00461
00462
00463
00464 cpl_msg_info(recipe, "Recipe %s configuration parameters:", recipe);
00465 cpl_msg_indent_more();
00466
00467 if (cpl_frameset_count_tags(frameset, "GRISM_TABLE") > 1)
00468 fors_wave_calib_exit("Too many in input: GRISM_TABLE");
00469
00470 grism_table = dfs_load_table(frameset, "GRISM_TABLE", 1);
00471
00472 dispersion = dfs_get_parameter_double(parlist,
00473 "fors.fors_wave_calib.dispersion", grism_table);
00474
00475 if (dispersion <= 0.0)
00476 fors_wave_calib_exit("Invalid spectral dispersion value");
00477
00478 peakdetection = dfs_get_parameter_double(parlist,
00479 "fors.fors_wave_calib.peakdetection", grism_table);
00480 if (peakdetection <= 0.0)
00481 fors_wave_calib_exit("Invalid peak detection level");
00482
00483 wdegree = dfs_get_parameter_int(parlist,
00484 "fors.fors_wave_calib.wdegree", grism_table);
00485
00486 if (wdegree < 1)
00487 fors_wave_calib_exit("Invalid polynomial degree");
00488
00489 if (wdegree > 5)
00490 fors_wave_calib_exit("Max allowed polynomial degree is 5");
00491
00492 wradius = dfs_get_parameter_int(parlist,
00493 "fors.fors_wave_calib.wradius", NULL);
00494
00495 if (wradius < 0)
00496 fors_wave_calib_exit("Invalid search radius");
00497
00498 wreject = dfs_get_parameter_double(parlist,
00499 "fors.fors_wave_calib.wreject", NULL);
00500
00501 if (wreject <= 0.0)
00502 fors_wave_calib_exit("Invalid rejection threshold");
00503
00504 wcolumn = dfs_get_parameter_string(parlist,
00505 "fors.fors_wave_calib.wcolumn", NULL);
00506
00507 startwavelength = dfs_get_parameter_double(parlist,
00508 "fors.fors_wave_calib.startwavelength", grism_table);
00509 if (startwavelength > 1.0)
00510 if (startwavelength < 3000.0 || startwavelength > 13000.0)
00511 fors_wave_calib_exit("Invalid wavelength");
00512
00513 endwavelength = dfs_get_parameter_double(parlist,
00514 "fors.fors_wave_calib.endwavelength", grism_table);
00515 if (endwavelength > 1.0) {
00516 if (endwavelength < 3000.0 || endwavelength > 13000.0)
00517 fors_wave_calib_exit("Invalid wavelength");
00518 if (startwavelength < 1.0)
00519 fors_wave_calib_exit("Invalid wavelength interval");
00520 }
00521
00522 if (startwavelength > 1.0)
00523 if (endwavelength - startwavelength <= 0.0)
00524 fors_wave_calib_exit("Invalid wavelength interval");
00525
00526 cpl_table_delete(grism_table); grism_table = NULL;
00527
00528 if (cpl_error_get_code())
00529 fors_wave_calib_exit("Failure reading the configuration parameters");
00530
00531
00532 cpl_msg_indent_less();
00533 cpl_msg_info(recipe, "Check input set-of-frames:");
00534 cpl_msg_indent_more();
00535
00536 if (cpl_frameset_count_tags(frameset, "MASTER_LINECAT") == 0)
00537 fors_wave_calib_exit("Missing required input: MASTER_LINECAT");
00538
00539 if (cpl_frameset_count_tags(frameset, "MASTER_LINECAT") > 1)
00540 fors_wave_calib_exit("Too many in input: MASTER_LINECAT");
00541
00542 lamp_mxu = cpl_frameset_count_tags(frameset, "RECTIFIED_LAMP_MXU");
00543 lamp_mos = cpl_frameset_count_tags(frameset, "RECTIFIED_LAMP_MOS");
00544
00545 narc = lamp_mxu + lamp_mos;
00546
00547 if (narc == 0) {
00548 fors_wave_calib_exit("Missing input rectified arc lamp frame");
00549 }
00550 if (narc > 1) {
00551 cpl_msg_error(recipe, "Too many input rectified arc lamp frames "
00552 "(%d > 1)", narc);
00553 fors_wave_calib_exit(NULL);
00554 }
00555
00556 mxu = mos = 0;
00557
00558 if (lamp_mxu) {
00559 mxu = 1;
00560 arc_tag = "RECTIFIED_LAMP_MXU";
00561 slit_location_tag = "SLIT_LOCATION_MXU";
00562 spatial_map_tag = "SPATIAL_MAP_MXU";
00563 reduced_lamp_tag = "REDUCED_LAMP_MXU";
00564 disp_residuals_tag = "DISP_RESIDUALS_MXU";
00565 disp_coeff_tag = "DISP_COEFF_MXU";
00566 curv_coeff_tag = "CURV_COEFF_MXU";
00567 wavelength_map_tag = "WAVELENGTH_MAP_MXU";
00568 spectral_resolution_tag = "SPECTRAL_RESOLUTION_MXU";
00569 }
00570 else if (lamp_mos) {
00571 mos = 1;
00572 arc_tag = "RECTIFIED_LAMP_MOS";
00573 slit_location_tag = "SLIT_LOCATION_MOS";
00574 spatial_map_tag = "SPATIAL_MAP_MOS";
00575 reduced_lamp_tag = "REDUCED_LAMP_MOS";
00576 disp_residuals_tag = "DISP_RESIDUALS_MOS";
00577 disp_coeff_tag = "DISP_COEFF_MOS";
00578 curv_coeff_tag = "CURV_COEFF_MXU";
00579 wavelength_map_tag = "WAVELENGTH_MAP_MOS";
00580 spectral_resolution_tag = "SPECTRAL_RESOLUTION_MOS";
00581 }
00582
00583
00584 nref = cpl_frameset_count_tags(frameset, spatial_map_tag);
00585
00586 if (nref == 0) {
00587 fors_wave_calib_exit("Missing input spatial map");
00588 }
00589 if (nref > 1) {
00590 cpl_msg_error(recipe, "Too many input spatial maps (%d > 1)", nref);
00591 fors_wave_calib_exit(NULL);
00592 }
00593
00594 nref = cpl_frameset_count_tags(frameset, slit_location_tag);
00595
00596 if (nref == 0) {
00597 fors_wave_calib_exit("Missing input slit location table");
00598 }
00599 if (nref > 1) {
00600 cpl_msg_error(recipe, "Too many input slit location tables (%d > 1)",
00601 nref);
00602 fors_wave_calib_exit(NULL);
00603 }
00604
00605 nref = cpl_frameset_count_tags(frameset, curv_coeff_tag);
00606
00607 if (nref == 0) {
00608 fors_wave_calib_exit("Missing input spectral curvature table");
00609 }
00610 if (nref > 1) {
00611 cpl_msg_error(recipe, "Too many input spectral curvature tables "
00612 "(%d > 1)", nref);
00613 fors_wave_calib_exit(NULL);
00614 }
00615
00616
00617 if (!dfs_equal_keyword(frameset, "ESO INS GRIS1 ID"))
00618 fors_wave_calib_exit("Input frames are not from the same grism");
00619
00620 if (!dfs_equal_keyword(frameset, "ESO INS FILT1 ID"))
00621 fors_wave_calib_exit("Input frames are not from the same filter");
00622
00623 if (!dfs_equal_keyword(frameset, "ESO DET CHIP1 ID"))
00624 fors_wave_calib_exit("Input frames are not from the same chip");
00625
00626
00627
00628
00629
00630
00631
00632 header = dfs_load_header(frameset, spatial_map_tag, 0);
00633
00634 if (header == NULL)
00635 fors_wave_calib_exit("Cannot load arc lamp header");
00636
00637 instrume = (char *)cpl_propertylist_get_string(header, "INSTRUME");
00638 if (instrume == NULL)
00639 fors_wave_calib_exit("Missing keyword INSTRUME in arc lamp header");
00640
00641 if (instrume[4] == '1')
00642 snprintf(version, 80, "%s/%s", "fors1", VERSION);
00643 if (instrume[4] == '2')
00644 snprintf(version, 80, "%s/%s", "fors2", VERSION);
00645
00646 reference = cpl_propertylist_get_double(header, "ESO INS GRIS1 WLEN");
00647
00648 if (cpl_error_get_code() != CPL_ERROR_NONE)
00649 fors_wave_calib_exit("Missing keyword ESO INS GRIS1 WLEN "
00650 "in arc lamp frame header");
00651
00652 if (reference < 3000.0)
00653 reference *= 10;
00654
00655 if (reference < 3000.0 || reference > 13000.0) {
00656 cpl_msg_error(recipe, "Invalid central wavelength %.2f read from "
00657 "keyword ESO INS GRIS1 WLEN in arc lamp frame header",
00658 reference);
00659 fors_wave_calib_exit(NULL);
00660 }
00661
00662 cpl_msg_info(recipe, "The central wavelength is: %.2f", reference);
00663
00664 rebin = cpl_propertylist_get_int(header, "ESO DET WIN1 BINX");
00665
00666 if (cpl_error_get_code() != CPL_ERROR_NONE)
00667 fors_wave_calib_exit("Missing keyword ESO DET WIN1 BINX "
00668 "in arc lamp frame header");
00669
00670 if (rebin != 1) {
00671 dispersion *= rebin;
00672 cpl_msg_warning(recipe, "The rebin factor is %d, and therefore the "
00673 "working dispersion used is %f A/pixel", rebin,
00674 dispersion);
00675 }
00676
00677
00678 cpl_msg_info(recipe, "Produce mask slit position table...");
00679
00680 if (mos)
00681 maskslits = mos_load_slits_fors_mos(header);
00682 else
00683 maskslits = mos_load_slits_fors_mxu(header);
00684
00685
00686
00687
00688
00689
00690
00691 mxpos = cpl_table_get_column_median(maskslits, "xtop");
00692 xpos = cpl_table_get_data_double(maskslits, "xtop");
00693 nslits = cpl_table_get_nrow(maskslits);
00694
00695 treat_as_lss = 1;
00696 for (i = 0; i < nslits; i++) {
00697 if (fabs(mxpos-xpos[i]) > 0.01) {
00698 treat_as_lss = 0;
00699 break;
00700 }
00701 }
00702
00703 cpl_table_delete(maskslits); maskslits = NULL;
00704
00705 if (treat_as_lss) {
00706 cpl_msg_error(recipe, "All slits have the same offset: %.2f mm\n"
00707 "The LSS data reduction strategy must be applied: "
00708 "please use recipe fors_wave_calib_lss", mxpos);
00709 fors_wave_calib_exit(NULL);
00710 }
00711
00712
00713 cpl_msg_indent_less();
00714 cpl_msg_info(recipe, "Load arc lamp exposure...");
00715 cpl_msg_indent_more();
00716
00717 spectra = dfs_load_image(frameset, arc_tag, CPL_TYPE_FLOAT, 0, 0);
00718
00719 if (spectra == NULL)
00720 fors_wave_calib_exit("Cannot load arc lamp exposure");
00721
00722
00723 cpl_msg_indent_less();
00724 cpl_msg_info(recipe, "Load input line catalog...");
00725 cpl_msg_indent_more();
00726
00727 wavelengths = dfs_load_table(frameset, "MASTER_LINECAT", 1);
00728
00729 if (wavelengths == NULL)
00730 fors_wave_calib_exit("Cannot load line catalog");
00731
00732
00733
00734
00735
00736
00737 nlines = cpl_table_get_nrow(wavelengths);
00738
00739 if (nlines == 0)
00740 fors_wave_calib_exit("Empty input line catalog");
00741
00742 if (cpl_table_has_column(wavelengths, wcolumn) != 1) {
00743 cpl_msg_error(recipe, "Missing column %s in input line catalog table",
00744 wcolumn);
00745 fors_wave_calib_exit(NULL);
00746 }
00747
00748 line = cpl_malloc(nlines * sizeof(double));
00749
00750 for (i = 0; i < nlines; i++)
00751 line[i] = cpl_table_get(wavelengths, wcolumn, i, NULL);
00752
00753 cpl_table_delete(wavelengths); wavelengths = NULL;
00754
00755 lines = cpl_vector_wrap(nlines, line);
00756
00757
00758 cpl_msg_indent_less();
00759 cpl_msg_info(recipe, "Load slit location table...");
00760 cpl_msg_indent_more();
00761
00762 slits = dfs_load_table(frameset, slit_location_tag, 1);
00763
00764 if (slits == NULL)
00765 fors_wave_calib_exit("Cannot load slit location table");
00766
00767
00768 cpl_msg_indent_less();
00769 cpl_msg_info(recipe, "Subtract background from input arc exposure...");
00770 cpl_msg_indent_more();
00771
00772 bimage = mos_arc_background(spectra, 15, 15);
00773 cpl_image_subtract(spectra, bimage);
00774 cpl_image_delete(bimage);
00775
00776
00777 cpl_msg_indent_less();
00778 cpl_msg_info(recipe, "Perform wavelength calibration...");
00779 cpl_msg_indent_more();
00780
00781 nx = cpl_image_get_size_x(spectra);
00782 ny = cpl_image_get_size_y(spectra);
00783
00784 idscoeff = cpl_table_new(ny);
00785 rainbow = cpl_image_new(nx, ny, CPL_TYPE_FLOAT);
00786 residual = cpl_image_new(nx, ny, CPL_TYPE_FLOAT);
00787 fiterror = cpl_calloc(ny, sizeof(double));
00788 fitlines = cpl_calloc(ny, sizeof(int));
00789
00790 rectified = mos_wavelength_calibration_final(spectra, slits, lines,
00791 dispersion, peakdetection,
00792 wradius, wdegree, wreject,
00793 reference, &startwavelength,
00794 &endwavelength, fitlines,
00795 fiterror, idscoeff, rainbow,
00796 residual, NULL);
00797
00798 cpl_image_delete(spectra); spectra = NULL;
00799
00800 if (rectified == NULL)
00801 fors_wave_calib_exit("Wavelength calibration failure");
00802
00803 save_header = cpl_propertylist_new();
00804 cpl_propertylist_update_double(save_header, "CRPIX1", 1.0);
00805 cpl_propertylist_update_double(save_header, "CRPIX2", 1.0);
00806 cpl_propertylist_update_double(save_header, "CRVAL1",
00807 startwavelength + dispersion/2);
00808 cpl_propertylist_update_double(save_header, "CRVAL2", 1.0);
00809
00810
00811 cpl_propertylist_update_double(save_header, "CD1_1", dispersion);
00812 cpl_propertylist_update_double(save_header, "CD1_2", 0.0);
00813 cpl_propertylist_update_double(save_header, "CD2_1", 0.0);
00814 cpl_propertylist_update_double(save_header, "CD2_2", 1.0);
00815 cpl_propertylist_update_string(save_header, "CTYPE1", "LINEAR");
00816 cpl_propertylist_update_string(save_header, "CTYPE2", "PIXEL");
00817 cpl_propertylist_update_int(save_header, "ESO PRO DATANCOM", 1);
00818
00819 if (dfs_save_image(frameset, rectified, reduced_lamp_tag, save_header,
00820 parlist, recipe, version))
00821 fors_wave_calib_exit(NULL);
00822
00823 cpl_propertylist_delete(save_header); save_header = NULL;
00824 save_header = cpl_propertylist_new();
00825
00826 cpl_propertylist_update_double(save_header, "CRPIX2", 1.0);
00827 cpl_propertylist_update_double(save_header, "CRVAL2", 1.0);
00828
00829 cpl_propertylist_update_double(save_header, "CD1_1", 1.0);
00830 cpl_propertylist_update_double(save_header, "CD1_2", 0.0);
00831 cpl_propertylist_update_double(save_header, "CD2_1", 0.0);
00832 cpl_propertylist_update_double(save_header, "CD2_2", 1.0);
00833 cpl_propertylist_update_string(save_header, "CTYPE1", "LINEAR");
00834 cpl_propertylist_update_string(save_header, "CTYPE2", "PIXEL");
00835
00836 if (dfs_save_image(frameset, residual, disp_residuals_tag, save_header,
00837 parlist, recipe, version))
00838 fors_wave_calib_exit(NULL);
00839
00840 cpl_propertylist_delete(save_header); save_header = NULL;
00841 cpl_image_delete(residual); residual = NULL;
00842
00843 cpl_table_wrap_double(idscoeff, fiterror, "error"); fiterror = NULL;
00844 cpl_table_set_column_unit(idscoeff, "error", "pixel");
00845 cpl_table_wrap_int(idscoeff, fitlines, "nlines"); fitlines = NULL;
00846
00847 for (i = 0; i < ny; i++)
00848 if (!cpl_table_is_valid(idscoeff, "c0", i))
00849 cpl_table_set_invalid(idscoeff, "error", i);
00850
00851 if (dfs_save_table(frameset, idscoeff, disp_coeff_tag, NULL,
00852 parlist, recipe, version))
00853 fors_wave_calib_exit(NULL);
00854
00855 mean_rms = mos_distortions_rms(rectified, lines, startwavelength,
00856 dispersion, 6, 0);
00857
00858 cpl_msg_info(recipe, "Mean residual: %f pixel", mean_rms);
00859
00860 mean_rms = cpl_table_get_column_mean(idscoeff, "error");
00861
00862 cpl_msg_info(recipe, "Mean model accuracy: %f pixel (%f A)",
00863 mean_rms, mean_rms * dispersion);
00864
00865 cpl_table_delete(idscoeff); idscoeff = NULL;
00866
00867
00868
00869
00870
00871 restab = mos_resolution_table(rectified, startwavelength, dispersion,
00872 60000, lines);
00873
00874 cpl_vector_delete(lines); lines = NULL;
00875 cpl_image_delete(rectified); rectified = NULL;
00876
00877 if (restab) {
00878 cpl_msg_info(recipe, "Mean spectral resolution: %.2f",
00879 cpl_table_get_column_mean(restab, "resolution"));
00880 cpl_msg_info(recipe, "Mean reference lines FWHM: %.2f +/- %.2f pixel",
00881 cpl_table_get_column_mean(restab, "fwhm") / dispersion,
00882 cpl_table_get_column_mean(restab, "fwhm_rms") / dispersion);
00883
00884 if (dfs_save_table(frameset, restab, spectral_resolution_tag, NULL,
00885 parlist, recipe, version))
00886 fors_wave_calib_exit(NULL);
00887
00888 cpl_table_delete(restab); restab = NULL;
00889 }
00890 else
00891 fors_wave_calib_exit("Cannot compute the spectral resolution table");
00892
00893
00894 cpl_msg_indent_less();
00895 cpl_msg_info(recipe, "Load spatial map image...");
00896 cpl_msg_indent_more();
00897
00898 spatial = dfs_load_image(frameset, spatial_map_tag, CPL_TYPE_FLOAT, 0, 0);
00899
00900 if (spatial == NULL)
00901 fors_wave_calib_exit("Cannot load spatial map");
00902
00903 cpl_msg_indent_less();
00904 cpl_msg_info(recipe, "Load spectral curvature table...");
00905 cpl_msg_indent_more();
00906
00907 polytraces = dfs_load_table(frameset, curv_coeff_tag, 1);
00908
00909 if (polytraces == NULL)
00910 fors_wave_calib_exit("Cannot load spectral curvature table");
00911
00912 wavemap = mos_map_wavelengths(spatial, rainbow, slits, polytraces,
00913 reference, startwavelength, endwavelength,
00914 dispersion);
00915
00916 cpl_image_delete(rainbow); rainbow = NULL;
00917 cpl_image_delete(spatial); spatial = NULL;
00918 cpl_table_delete(slits); slits = NULL;
00919 cpl_table_delete(polytraces); polytraces = NULL;
00920
00921 if (dfs_save_image(frameset, wavemap, wavelength_map_tag, header,
00922 parlist, recipe, version))
00923 fors_wave_calib_exit(NULL);
00924
00925 cpl_image_delete(wavemap); wavemap = NULL;
00926 cpl_propertylist_delete(header); header = NULL;
00927
00928 return 0;
00929 }