NAME

       mArchiveList - Retrieve a list of archive images from the IRSA server

SYNOPSIS

       mArchiveList survey band object|location width height outfile

DESCRIPTION

       Given a location on the sky, archive name, and size in degrees, contact the IRSA server to
       retrieve a list of archive images.   The  list  contains  enough  information  to  support
       mArchiveGet downloads.

ARGUMENTS

       survey Can be one of:

                    2MASS
                    DSS
                    SDSS
                    DPOSS

       band   Case insensitive - can be one of:

                    (2MASS) j, h, k
                    (SDSS) u, g, r, i, z
                    (DPOSS) f, j, n
                    (DSS) DSS1, DSS1R, DSS1B, DSS2, DSS2B, DSS2R, DSS2IR

       object|location
              Object  name or coordinate string to be resolved by NED (if string includes spaces,
              must be surrounded by double quotes)

       width  Width of area of interest, in degrees

       height Height of area of interest, in degrees

       outfile
              Path to output table

RESULT

       [struct stat="OK", count=num-images]

       outfile is an ASCII table of image metadata for the region and survey  of  interest.   The
       last column in the table is a URL that mArchiveGet can use to retrieve the image.

MESSAGES

       OK     [struct stat="OK", count=num-files]

       ERROR  Can't open output file outfile

       ERROR  Error message from IRSA's ImgList service

       ERROR  Couldn't find host hostname

       ERROR  Couldn't create socket()

       ERROR  hostname: connect failed

EXAMPLES

       To  retrieve  metadata and file handles for 2MASS J-band images, covering a half-degree by
       half-degree area around m31:

       mArchiveList 2mass j m31 0.5 0.5 2mass_m31_j.tbl
              [struct stat="OK", count=18]

       Output file: 2mass_m31_j.tbl.

       To retrieve GPFS file handles for SDSS u-band images:

       mArchiveList -s gpfs sdss u m101 0.2 0.2 sdss_m101_u.tbl
              [struct stat="OK", count=16]

       Output file: sdss_m101_u.tbl.

BUGS

       The drizzle algorithm has been implemented but has not been tested in this release.

       If a header template contains  carriage  returns  (i.e.,  created/modified  on  a  Windows
       machine),  the cfitsio library will be unable to read it properly, resulting in the error:
       [struct stat="ERROR", status=207, msg="illegal character in keyword"]

       It is best for the background correction algorithms if the area described  in  the  header
       template  completely encloses all of the input images in their entirety. If parts of input
       images are "chopped off" by  the  header  template,  the  background  correction  will  be
       affected.  We  recommend  you  use  an expanded header for the reprojection and background
       modeling steps, returning to the originally desired header size for the final  coaddition.
       The default background matching assumes that there are no non-linear background variations
       in the individual images (and therefore in the  overlap  differences).  If  there  is  any
       uncertainty  in  this  regard, it is safer to turn on the "level only" background matching
       (the "-l" flag in mBgModel.

COPYRIGHT

       2001-2015 California Institute of Technology, Pasadena, California

       If your research  uses  Montage,  please  include  the  following  acknowledgement:  "This
       research  made use of Montage. It is funded by the National Science Foundation under Grant
       Number ACI-1440620, and was previously  funded  by  the  National  Aeronautics  and  Space
       Administration's  Earth Science Technology Office, Computation Technologies Project, under
       Cooperative Agreement Number  NCC5-626  between  NASA  and  the  California  Institute  of
       Technology."

       The  Montage  distribution  includes an adaptation of the MOPEX algorithm developed at the
       Spitzer Science Center.