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  1. Data Management
  2. DM-21062

Write DMTN describing crowded-field photometry in DRP

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: DM Subsystem Science
    • Labels:
      None

      Description

      Write up the design for how we would do traditional crowded-field detection and photometry in DRP if it is accepted as in scope for construction.

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            jbosch Jim Bosch added a comment -

            First draft is done, with (I think) the only major problem the complete lack of references.  But I think it's at the point where a review would be useful.

            Colin Slater, would you be up for that?

            Published version is here: https://dmtn-129.lsst.io/v/DM-21062/index.html

            and the PR is here: https://github.com/lsst-dm/dmtn-129/pull/2

             

            Show
            jbosch Jim Bosch added a comment - First draft is done, with (I think) the only major problem the complete lack of references.  But I think it's at the point where a review would be useful. Colin Slater , would you be up for that? Published version is here: https://dmtn-129.lsst.io/v/DM-21062/index.html and the PR is here: https://github.com/lsst-dm/dmtn-129/pull/2  
            Hide
            ctslater Colin Slater added a comment -

            Looks good, it's super helpful to have this written down in one place. I left a few questions on the github PR, the only substantive one is really how to target the intro for the audience, given that this might have to serve multiple different audiences.

            One other thought I had while reading this in detail is that the wings of bright stars might cause problems with making usable cells for coadds (the wings might be affecting a larger area than you can make into a single cell). Presumably the first-level answer is to use Gaia to avoid having to fit the bright stars at all, but I'd worry a little bit about whether there are stars too faint for Gaia photometry but still bright enough to cause problematically large wings. This might be a more detailed question than this writeup really needs to handle, but we'll need to figure it out at some point.

             

             

            Show
            ctslater Colin Slater added a comment - Looks good, it's super helpful to have this written down in one place. I left a few questions on the github PR, the only substantive one is really how to target the intro for the audience, given that this might have to serve multiple different audiences. One other thought I had while reading this in detail is that the wings of bright stars might cause problems with making usable cells for coadds (the wings might be affecting a larger area than you can make into a single cell). Presumably the first-level answer is to use Gaia to avoid having to fit the bright stars at all, but I'd worry a little bit about whether there are stars too faint for Gaia photometry but still bright enough to cause problematically large wings. This might be a more detailed question than this writeup really needs to handle, but we'll need to figure it out at some point.    
            Hide
            jbosch Jim Bosch added a comment -

            Jonathan Sick, this is not at all urgent, but the branch builds for this ticket seem to be failing to upload to lsst.io, e.g. https://travis-ci.com/lsst-dm/dmtn-129/builds/136572578, though at one point they were working.  Should I just merge it master anyway, and hope that goes through (it's otherwise ready)?  The Latex build itself seems to have been fine.

            Show
            jbosch Jim Bosch added a comment - Jonathan Sick , this is not at all urgent, but the branch builds for this ticket seem to be failing to upload to lsst.io, e.g. https://travis-ci.com/lsst-dm/dmtn-129/builds/136572578 , though at one point they were working.  Should I just merge it master anyway, and hope that goes through (it's otherwise ready)?  The Latex build itself seems to have been fine.
            Hide
            jsick Jonathan Sick added a comment -

            Wow, sorry about that. It's an internal LSST the Docs failure. I'll get that fixed for you.

            Show
            jsick Jonathan Sick added a comment - Wow, sorry about that. It's an internal LSST the Docs failure. I'll get that fixed for you.

              People

              • Assignee:
                jbosch Jim Bosch
                Reporter:
                jbosch Jim Bosch
                Reviewers:
                Colin Slater
                Watchers:
                Colin Slater, Jim Bosch, Jonathan Sick
              • Votes:
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                Watchers:
                3 Start watching this issue

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                • Created:
                  Updated:
                  Resolved:

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