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  1. Data Management
  2. DM-2529

Add HCS's pure TAN WCS fitter to the astrometry task

    Details

    • Type: Improvement
    • Status: Won't Fix
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: meas_astrom
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      Description

      HSC's hscAstrom astrometry fitter runs a pure TAN fitter after matching sources to reference objects, then passes the resulting WCS to the TAN-SIP fitter. meas_astrom's astrometry task is very similar to HSC's fitter, but works poorly. One notable difference is that meas_astrom's astrometry task does not run a pure TAN fitter, so we will try adding that.

      I'm not sure this will help (since our initial guess for a WCS is already pretty good, and our TAN-SIP fitter already can handle TAN terms), but it's an easy thing to try.

      I plan to make it part of the FitTanWcsTask, so all WCS fitting is done at one time in one place (but by calling two bits of C++ code).

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              • Assignee:
                rowen Russell Owen
                Reporter:
                rowen Russell Owen
                Watchers:
                Dominique Boutigny, Paul Price, Russell Owen, Simon Krughoff
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                  Updated:
                  Resolved:

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