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  1. Data Management
  2. DM-24686

Make a single Gaussian PSF matched coadd

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    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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    • Story Points:
      8
    • Epic Link:
    • Sprint:
      DRP F20-5 (Oct)
    • Team:
      Data Release Production
    • Urgent?:
      No

      Description

      Gaussian Aperture and Photometry (GAaP) algorithm requires that the coadds be PSF matched, with the target PSF being a single circular Gaussian.

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          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. DM-24737 Implement GAaP: Gaussian Aperture and PSF photometry

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            kannawad Arun Kannawadi added a comment -

            This ticket, as described is not valid any more because it was decided to match the PSF on the fly instead of measuring on psfMatched coadds. This does not result in a code PR, but the effort spent on this ticket results in a set of initial config params that are being used, and will be finalised in DM-27482

             

            config = modelPsfMatch.ModelPsfMatchConfig()
            		 
            subconfig = config.kernel.active subconfig.alardDegGauss = [4]
            		 
            subconfig.alardSigGauss = [targetSigma]
            		 
            subconfig.alardDegGaussDeconv = 1
            		 
            subconfig.alardNGauss = 1
            		 
            subconfig.alardGaussBeta = 1.0
            		 
            subconfig.spatialKernelOrder = 0

            In the above, `targetSigma` is typically 1.15 x PSF trace radius.

            Here's a plot showing it in action:

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            kannawad Arun Kannawadi added a comment - This ticket, as described is not valid any more because it was decided to match the PSF on the fly instead of measuring on psfMatched coadds. This does not result in a code PR, but the effort spent on this ticket results in a set of initial config params that are being used, and will be finalised in DM-27482   config = modelPsfMatch.ModelPsfMatchConfig() subconfig = config.kernel.active subconfig.alardDegGauss = [ 4 ] subconfig.alardSigGauss = [targetSigma] subconfig.alardDegGaussDeconv =  1 subconfig.alardNGauss =  1 subconfig.alardGaussBeta =  1.0 subconfig.spatialKernelOrder =  0 In the above, `targetSigma` is typically 1.15 x PSF trace radius. Here's a plot showing it in action:

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              Assignee:
              kannawad Arun Kannawadi
              Reporter:
              kannawad Arun Kannawadi
              Watchers:
              Arun Kannawadi
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                Updated:
                Resolved:

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