Uploaded image for project: 'Data Management'
  1. Data Management
  2. DM-1384

Investigate deblending in one band followed by linear fits of models

    XMLWordPrintable

    Details

      Description

      (Cf. HSC-1024)

      One poor-man's approach to deblending multiple bands and visits is

      • Deblend in one band (or a combination, e.g. chi^2 band)
      • Fit models in that band
      • In all bands separately fit those models simultaneously to all object in the blend, allowing only a minimum of coefficients to float (ideally only amplitudes, but given the realities of real galaxies the bulge and disk will need to both be fit, or the Sloan Swindle components, or the Lensfit Swindle, or ...). The correct PSF for each image would be used.

      It will probably be necessary to include undetected objects in this fit (cf. HSC-1023), using point-source models.

      It is not clear how much of a poor-man's solution this actually is, or whether it will work quite well.

        Attachments

          Activity

          rhl Robert Lupton created issue -
          rhl Robert Lupton made changes -
          Field Original Value New Value
          Epic Link DM-1382 [ 14466 ]
          rhl Robert Lupton made changes -
          Rank Ranked higher
          rhl Robert Lupton made changes -
          Labels SciencePipelines
          rhl Robert Lupton made changes -
          Story Points 40
          swinbank John Swinbank made changes -
          Team Princeton [ 10301 ]
          swinbank John Swinbank made changes -
          Resolution Done [ 10000 ]
          Status To Do [ 10001 ] Won't Fix [ 10405 ]
          swinbank John Swinbank made changes -
          Component/s meas_deblender [ 10741 ]

            People

            Assignee:
            Unassigned Unassigned
            Reporter:
            rhl Robert Lupton
            Watchers:
            John Swinbank, Robert Lupton
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:

                Jenkins

                No builds found.