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.