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SOLVE-FIELD(1)			 astrometry.net 		  SOLVE-FIELD(1)

NAME
     solve-field - Main high-level command-line user interface.

SYNOPSIS
     solve-field  [options]  [image-file-1 image-file-2 ...]  [xyls-file-1 xyls-
     file-2 ...]

DESCRIPTION
     Main high-level command-line user interface for astrometry.net

     You can specify http:// or ftp:// URLs instead of filenames.  The "wget" or
     "curl" program will be used to retrieve the URL.

     The astrometry engine will take any image and return the  astrometry  world
     coordinate  system  (WCS), ie a standards-based description of the (usually
     nonlinear) transformation between image  coordinates  and	sky  coordinates
     with absolutely no afalse positivesa (but maybe some ano answersa). It will
     do  its  best,  even  when the input image has no or totally incorrect meta
     data.

OPTIONS
     -h, --help
	    Print the 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 file
	    Name the output files with this base name

     -b, --backend-config file
	    Use this config file for the "astrometry-engine" program

     --config file
	    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 file
	    Set the background image to use for plots (JPEG)

     -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  pre-
	    vious 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 file
	    Output filename of the new FITS  file  containing  the  WCS  header;
	    "none" to not create this file

     -Z, --kmz file
	    Create KMZ file for Google Sky. (requires wcs2kml)

     -i, --scamp file
	    Create image object catalog for SCAMP

     -n, --scamp-config file
	    Create SCAMP config file snippet

     -U, --index-xyls file
	    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 file
	    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 di-
	    mension, 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	hypothe-
	    sis (default: HUGE_VAL)

     --use-source-extractor
	    Use Source Extractor rather than built-in image2xy to find sources

     --source-extractor-config file
	    Use  the  given Source Extractor config file. Note that CATALOG_NAME
	    and CATALOG_TYPE values will be over-ridden by command-line  values.
	    This option implies --use-source-extractor.

     --source-extractor-path file
	    Use the given path to the Source Extractor executable. Default: just
	    'source-extractor',  assumed  to  be in your PATH. Note that you can
	    give command line args here too (but put them in quotes), eg:

	    --source-extractor-path 'source-extractor -DETECT_TYPE CCD'.

	    This option implies --use-source-extractor.

     -3 RA, --ra RA
	    RA of field center for search, format: degrees or hh:mm:ss

     -4 DEC, --dec DEC
	    DEC of field center for search, format: degrees or hh:mm:ss

     -5 degrees, --radius degrees
	    Only search in indexes within 'radius' of the field center given  by
	    --ra and --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 ap-
	    plicable).

     -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  de-
	    fault 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

     -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

     -0, --no-fix-sdss
	    Don't try to fix SDSS idR files.

     -C, --cancel file
	    Filename whose creation signals the process to stop

     -S, --solved file
	    Output file to mark that the solver succeeded

     -I, --solved-in file
	    Input filename for solved file

     -M, --match file
	    Output filename for match file

     -R, --rdls file
	    Output filename for RDLS file

     --sort-rdls column
	    Sort  the RDLS file by this column; default is ascending; use "-col-
	    umn" 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 file
	    Output filename for SCAMP reference catalog

     -B, --corr file
	    Output filename for correspondences

     -W, --wcs file
	    Output filename for WCS file

     -P, --pnm file
	    Save the PNM file as file

     -k, --keep-xylist file
	    Save the (unaugmented) xylist to file

     -A, --dont-augment
	    Quit after writing the unaugmented xylist

     -V, --verify file
	    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  or-
	    der

     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.)

AUTHOR
     The  Astrometry.net  team.  Principal investigators are David W. Hogg (NYU)
     and Dustin Lang (CMU).

SEE ALSO
     http://astrometry.net

0.56				    July 2015			  SOLVE-FIELD(1)

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