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  1. Data Management
  2. DM-32691

Add persistable class for constant PSFs

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    • Team:
      Data Release Production
    • Urgent?:
      No

      Description

      Currently the only way to define a constant Psf is via KernelPsf and FixedKernel; this is a kludgy way to do something important, and it doesn't produce an object that can be saved to Exposure FITS files, leading to problems like DM-32588.

      We should have a dedicated class for constant PSFs, and we should make sure it is persistable.

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          relates to

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. DM-32588 Clean up and test afw.image deepcopy and pickle implementations

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            krzys Krzysztof Findeisen added a comment -

            Two clarifications, please:

            • What is a "constant Psf"? Is this a Psf that is not spatially varying, one that's immutable, ...?
            • Why can't KernelPsf and FixedKernel be persisted? It seems like we would want to fix that regardless of whether we create a new class.
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            krzys Krzysztof Findeisen added a comment - Two clarifications, please: What is a "constant Psf"? Is this a Psf that is not spatially varying, one that's immutable, ...? Why can't KernelPsf and FixedKernel be persisted? It seems like we would want to fix that regardless of whether we create a new class.
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            jbosch Jim Bosch added a comment -

            Not spatially varying is what I meant. I'm not opposed to making KernelPsf and FixedKernel persistable, and that plus a factory function for making constant PSFs using those would be an acceptable resolution to this ticket.

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            jbosch Jim Bosch added a comment - Not spatially varying is what I meant. I'm not opposed to making KernelPsf and FixedKernel persistable, and that plus a factory function for making constant PSFs using those would be an acceptable resolution to this ticket.

              People

              Assignee:
              Unassigned Unassigned
              Reporter:
              jbosch Jim Bosch
              Watchers:
              Fred Moolekamp, Jim Bosch
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              1 Vote for this issue
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              2 Start watching this issue

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                Updated:

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