From boutigny at in2p3.fr Fri Aug 28 15:37:24 2015 From: boutigny at in2p3.fr (Dominique Boutigny) Date: Fri, 28 Aug 2015 15:37:24 -0700 Subject: [LSST|dm-astrometry #10] Status of simultaneous astrometry implementation in DM stack Message-ID: <55E0E2A4.8080901@in2p3.fr> Dear All, As I presented during the Bremerton meeting, the simultaneous astrometry algorithm written by Pierre is now interfaced with the LSST stack. It is available as an LSST-like package in : https://github.com/lsst-france/meas_simastrom.git Some plots obtained on a set of 20 CFHT exposures (36 CCD) are available in the following notebook : https://github.com/lsst-france/meas_simastrom/blob/master/notebooks/Astrometry.ipynb Following the discussion in Bremerton, I have tried to test the algorithm on HSC data processed by Lauren at NCSA. The task is running and the HSC sources are read, but unfortunately the fit is not converging and I get NaN at the very first chi2 computation. This is probably easy to fix but requires some debugging that I will not be able to accomplish before my vacation. Here are some details of what I have done at NCSA : - Everything is installed in /lsst8/boutigny/Astrometry - The my_package sub-directory contains the necessary packages : meas_simastrom and obs_subaru (taken yesterday from the master branch) - s82V1 is a link to /raid/lauren/rerun/LSST/STRIPE82L/v1 containing the HSC source catalogs reduced by Lauren - usno-a2.0 contains the USNO reference catalog - setup.sh contains the environment setup - run.list contains a list of visits/ccd to be processed by simAstrom.py - The command to run the simultaneous astrometry is : simAstrom.py s82V1 @run.list --config sourceFluxField='base_CircularApertureFlux_17_0' I will be back to work on Monday September 14th. Best, Dominique -- Dominique Boutigny - CNRS / CC-IN2P3 Now at SLAC National Accelerator Laboratory Kavli Building - Room 221 Mail : boutigny at in2p3.fr - boutigny at slac.stanford.edu Office : +1 650-926-5759 - Cellular : +1 774-232-0912 -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 2956 bytes Desc: S/MIME Cryptographic Signature URL: