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Description

This obs_decam package is for interfacing DECam with the LSST Data Management software.

This package is not a part of the official LSST Data Management stack, and is hosted by the LSST project only as a courtesy to the astronomical community. The LSST does not commit to supporting this package, and makes no warranty about its quality or performance. It is licensed under the GNU Public License version 3.

The initial version of this package was provided by Paul Price ([email protected]), and though he also makes no commitment to support it, users are welcome to contact him and/or the LSST Data Management mailing list ([email protected]) with questions.

Copyleft

LSST Data Management System Copyright 2012 LSST Corporation.

This package is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Use

  1. Create a data repository directory:

     $ mkdir /path/to/repo
 $ echo lsst.obs.decam.DecamMapper > /path/to/repo/_mapper

  2. Get and build obs_decam:

     $ cd /path/to/work
 $ git clone git://github.com/LSST-nonproject/obs_decam.git
 $ cd obs_decam
 $ setup -t <CURRENT_TAG> -r .
 $ scons install declare --tag=current

  3. Import data into the data repository:

     $ cd /path/to/data
 $ setup -t <CURRENT_TAG> pipe_tasks
 $ setup -k -t <CURRENT_TAG> obs_decam
 $ ingestImages.py /path/to/repo --mode=link *.fits

  4. Process data

     $ setup -t <CURRENT_TAG> pipe_tasks
 $ setup -k -t <CURRENT_TAG> obs_decam
 $ processCcd.py /path/to/repo --id visit=12345 ccd=5 side=N

Data identifiers

The following keywords are available when specifying a data identifier:

  • proposal: proposal identifier
  • visit: exposure number
  • taiObs: actually UTC, but not very useful for specifying data, as must match exactly
  • expTime
  • date
  • filter
  • side: N or S
  • ccd: CCD number; together with side, specifies a unique CCD
  • object: object name

visit, side, ccd are required to specify a unique CCD image.

Notes by ACB

This has been modified to run the equivalent of processCcd on Community-pipeline reduced Decam data. A couple of features:

  • the input data currently need to reside in the --ouput directory.
  • file naming convention is "%(visit)07d/dec%(visit)07d.fits.fz[%(ccd)d]"

Example commands to run the code are below:

  • setup pipe_tasks
  • setup obs_decam
  • setup astrometry_net_data
  • python ~/python/obs_decam/bin/processCcdDecam.py . --id visit=1656128 ccd=1 --output .