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  1. Data Management
  2. DM-1383

Investigate deblending in one band followed by using the resulting templates in all bands

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    • 40
    • Data Release Production

    Description

      (See also HSC-1025)

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

      • Deblend in one band (or a combination, e.g. chi^2 band) using an SDSS-like algorithm that produces templates for each child
      • Take the templates (or possible model fits to those templates) and use them to deblend the objects in all other bands

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

      Note that this does not allow for the different seeing in each band. This is not obviously catastrophic for reasonably wide blends as the total flux in each pixel is conserved, and if only one template is important near an object's centre the exact form of the template is unimportant.

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          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 ]

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            rhl Robert Lupton
            John Swinbank, Robert Lupton
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