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This program is part of the Astrometry.net suite. For details, visit http://astrometry.net. Git URL https://github.com/dstndstn/astrometry.net Revision 0.72, date Mon_Jul_10_14:37:28_2017_-0400. Usage: solve-field [options] [<image-file-1> <image-file-2> ...] [<xyls-file-1> <xyls-file-2> ...] You can specify http:// or ftp:// URLs instead of filenames. The "wget" or "curl" program will be used to retrieve the URL. Options include: -h / --help: print this help message -v / --verbose: be more chatty -- repeat for even more verboseness -D / --dir <directory>: place all output files in the specified directory -o / --out <base-filename>: name the output files with this base name -b / --backend-config <filename>: use this config file for the "astrometry-engine" program --config <filename>: use this config file for the "astrometry-engine" program --batch: run astrometry-engine once, rather than once per input file -f / --files-on-stdin: read filenames to solve on stdin, one per line -p / --no-plots: don't create any plots of the results --plot-scale <scale>: scale the plots by this factor (eg, 0.25) --plot-bg <filename (JPEG)>: set the background image to use for plots -G / --use-wget: use wget instead of curl -O / --overwrite: overwrite output files if they already exist -K / --continue: don't overwrite output files if they already exist; continue a previous run -J / --skip-solved: skip input files for which the 'solved' output file already exists; NOTE: this assumes single-field input files --fits-image: assume the input files are FITS images -N / --new-fits <filename>: output filename of the new FITS file containing the WCS header; "none" to not create this file -Z / --kmz <filename>: create KMZ file for Google Sky. (requires wcs2kml) -i / --scamp <filename>: create image object catalog for SCAMP -n / --scamp-config <filename>: create SCAMP config file snippet -U / --index-xyls <filename>: output filename for xylist containing the image coordinate of stars from the index --just-augment: just write the augmented xylist files; don't run astrometry-engine. --axy <filename>: output filename for augment xy list (axy) --temp-axy: write 'augmented xy list' (axy) file to a temp file --timestamp: add timestamps to log messages -7 / --no-delete-temp: don't delete temp files (for debugging) -L / --scale-low <scale>: lower bound of image scale estimate -H / --scale-high <scale>: upper bound of image scale estimate -u / --scale-units <units>: in what units are the lower and upper bounds? choices: "degwidth", "degw", "dw" : width of the image, in degrees (default) "arcminwidth", "amw", "aw" : width of the image, in arcminutes "arcsecperpix", "app": arcseconds per pixel "focalmm": 35-mm (width-based) equivalent focal length -8 / --parity <pos/neg>: only check for matches with positive/negative parity (default: try both) -c / --code-tolerance <distance>: matching distance for quads (default: 0.01) -E / --pixel-error <pixels>: for verification, size of pixel positional error (default: 1) -q / --quad-size-min <fraction>: minimum size of quads to try, as a fraction of the smaller image dimension, default: 0.1 -Q / --quad-size-max <fraction>: maximum size of quads to try, as a fraction of the image hypotenuse, default 1.0 --odds-to-tune-up <odds>: odds ratio at which to try tuning up a match that isn't good enough to solve (default: 1e6) --odds-to-solve <odds>: odds ratio at which to consider a field solved (default: 1e9) --odds-to-reject <odds>: odds ratio at which to reject a hypothesis (default: 1e-100) --odds-to-stop-looking <odds>: odds ratio at which to stop adding stars when evaluating a hypothesis (default: HUGE_VAL) --use-sextractor: use SExtractor rather than built-in image2xy to find sources --sextractor-config <filename>: use the given SExtractor config file. Note that CATALOG_NAME and CATALOG_TYPE values will be over-ridden by command-line values. This option implies --use-sextractor. --sextractor-path <filename>: use the given path to the SExtractor executable. Default: 'sextractor', assumed to be in your PATH. Note that you can give command-line args here too (but put them in quotes), eg: --sextractor-path 'sextractor -DETECT_TYPE CCD'. This option implies --use-sextractor. -3 / --ra <degrees or hh:mm:ss>: only search in indexes within 'radius' of the field center given by 'ra' and 'dec' -4 / --dec <degrees or [+-]dd:mm:ss>: only search in indexes within 'radius' of the field center given by 'ra' and 'dec' -5 / --radius <degrees>: only search in indexes within 'radius' of the field center given by ('ra', 'dec') -d / --depth <number or range>: number of field objects to look at, or range of numbers; 1 is the brightest star, so "-d 10" or "-d 1-10" mean look at the top ten brightest stars only. --objs <int>: cut the source list to have this many items (after sorting, if applicable). -l / --cpulimit <seconds>: give up solving after the specified number of seconds of CPU time -r / --resort: sort the star brightnesses by background-subtracted flux; the default is to sort using acompromise between background-subtracted and non-background-subtracted flux -6 / --extension <int>: FITS extension to read image from. --invert: invert the image (for black-on-white images) -z / --downsample <int>: downsample the image by factor <int> before running source extraction --no-background-subtraction: don't try to estimate a smoothly-varying sky background during source extraction. --sigma <float>: set the noise level in the image --nsigma <float>: number of sigma for a source detection; default 8 -9 / --no-remove-lines: don't remove horizontal and vertical overdensities of sources. --uniformize <int>: select sources uniformly using roughly this many boxes (0=disable; default 10) --no-verify-uniformize: don't uniformize the field stars during verification --no-verify-dedup: don't deduplicate the field stars during verification -C / --cancel <filename>: filename whose creation signals the process to stop -S / --solved <filename>: output file to mark that the solver succeeded -I / --solved-in <filename>: input filename for solved file -M / --match <filename>: output filename for match file -R / --rdls <filename>: output filename for RDLS file --sort-rdls <column>: sort the RDLS file by this column; default is ascending; use "-column" to sort "column" in descending order instead. --tag <column>: grab tag-along column from index into RDLS file --tag-all: grab all tag-along columns from index into RDLS file -j / --scamp-ref <filename>: output filename for SCAMP reference catalog -B / --corr <filename>: output filename for correspondences -W / --wcs <filename>: output filename for WCS file -P / --pnm <filename>: save the PNM file as <filename> -k / --keep-xylist <filename>: save the (unaugmented) xylist to <filename> -A / --dont-augment: quit after writing the unaugmented xylist -V / --verify <filename>: try to verify an existing WCS file --verify-ext <extension>: HDU from which to read WCS to verify; set this BEFORE --verify -y / --no-verify: ignore existing WCS headers in FITS input images -g / --guess-scale: try to guess the image scale from the FITS headers --crpix-center: set the WCS reference point to the image center --crpix-x <pix>: set the WCS reference point to the given position --crpix-y <pix>: set the WCS reference point to the given position -T / --no-tweak: don't fine-tune WCS by computing a SIP polynomial -t / --tweak-order <int>: polynomial order of SIP WCS corrections -m / --temp-dir <dir>: where to put temp files, default /tmp The following options are valid for xylist inputs only: -F / --fields <number or range>: the FITS extension(s) to solve, inclusive -w / --width <pixels>: specify the field width -e / --height <pixels>: specify the field height -X / --x-column <column-name>: the FITS column containing the X coordinate of the sources -Y / --y-column <column-name>: the FITS column containing the Y coordinate of the sources -s / --sort-column <column-name>: the FITS column that should be used to sort the sources -a / --sort-ascending: sort in ascending order (smallest first); default is descending order Note that most output files can be disabled by setting the filename to "none". (If you have a sick sense of humour and you really want to name your output file "none", you can use "./none" instead.)