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Instrument control development

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  1. Instrument control development
  2. INSTRM-1976

photometric zero-point from AG

    Details

    • Sprint:
      Eng13Oct

      Description

      The obsproc working group would like to suggest that we measure the photometric zero-point in each AG exposure.  This will allow us to measure the median zero-point and rms during an PFS exposure, which will be very useful for us to do an initial quality assessment at the summit in real-time.  We consider this functionality crucial for the future PFS science operation.  The color-term to translate the Gaia photometry into the AG system needs to be estimated.

        Attachments

        1. 371097_col.png
          371097_col.png
          35 kB
        2. 371097_flux.png
          371097_flux.png
          23 kB
        3. 385980_flux.png
          385980_flux.png
          18 kB
        4. 385981_col.png
          385981_col.png
          21 kB
        5. a_2.5_18.5_a.png
          a_2.5_18.5_a.png
          14 kB
        6. agCam.pdf
          414 kB
        7. agCamNew.pdf
          485 kB
        8. b_2.5_18.5_a.png
          b_2.5_18.5_a.png
          16 kB
        9. report.pdf
          364 kB

          Issue Links

          blocks

          Task - A task that needs to be done. INSTRM-2072 Reprocess AG data from previous runs

          • Normal - Normal priorities
          • Won't Fix
          relates to

          Task - A task that needs to be done. INSTRM-2073 Verify AG photometry calculations

          • Normal - Normal priorities
          • Won't Fix

            Activity

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            12 older comments
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            yuki.moritani yuki.moritani added a comment -

            (This is for recording) Jennifer will work on 1. and 4. first. Some items may be addressed in the new tickets.

            Show
            yuki.moritani yuki.moritani added a comment - (This is for recording) Jennifer will work on 1. and 4. first. Some items may be addressed in the new tickets.
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            karr karr added a comment -

            An updated report is attached. 

            agCamNew.pdf

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            karr karr added a comment - An updated report is attached.  agCamNew.pdf
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            yuki.moritani yuki.moritani added a comment -

            (Recapping activities in the last a few months)

            • For photometry itself, Jennifer
              • applied bias and flat-fielding, but the resultant scattering didn't change
              • changed parameter for sep, but  the resultant scattering didn't change
            • For fitting of mag(GP) vs mag(AG),
              • She filtered objects with bad seeing, as well as objects flagged as non-MS in gaia catalogue.
            • Applying the fitting to each half region of each camera separately, variation gets small (0.05mag), and residual deviates from linear at fainter sources
            • She will upload the latest version of the slides that she explained at ICS/PFI telecon in November/December 2023 by the end of this week, in order to see if the current formula is good enough or not
            • I also requested to use the following visits where the same stars were observed in different AGs, to check her fitting
              • visit = 98353 – 98360 (ngc6633, PA=90)
              • visit = 98371 – 98378 (ngc6633, PA=-90)

             

            Show
            yuki.moritani yuki.moritani added a comment - (Recapping activities in the last a few months) For photometry itself, Jennifer applied bias and flat-fielding, but the resultant scattering didn't change changed parameter for sep, but  the resultant scattering didn't change For fitting of mag(GP) vs mag(AG), She filtered objects with bad seeing, as well as objects flagged as non-MS in gaia catalogue. Applying the fitting to each half region of each camera separately, variation gets small (0.05mag), and residual deviates from linear at fainter sources She will upload the latest version of the slides that she explained at ICS/PFI telecon in November/December 2023 by the end of this week, in order to see if the current formula is good enough or not I also requested to use the following visits where the same stars were observed in different AGs, to check her fitting visit = 98353 – 98360 (ngc6633, PA=90) visit = 98371 – 98378 (ngc6633, PA=-90)  
            Hide
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            karr karr added a comment -

            Report is attached. report.pdf

            Show
            karr karr added a comment - Report is attached.  report.pdf
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            yuki.moritani yuki.moritani added a comment -

            Earlier this week, we talked about how/who to do what again. Considering the role of agccActor, Jennifer will focus on fixing INSTRM-2060 and measure centroid to guiding (and MCS). Calculating photometry to measure transparency taking account into a color term will be taken over to someone outside ASIAA. 

            Show
            yuki.moritani yuki.moritani added a comment - Earlier this week, we talked about how/who to do what again. Considering the role of agccActor, Jennifer will focus on fixing INSTRM-2060 and measure centroid to guiding (and MCS). Calculating photometry to measure transparency taking account into a color term will be taken over to someone outside ASIAA. 

              People

              • Assignee:
                Unassigned
                Reporter:
                msyktnk Masayuki Tanaka
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                Dates

                • Created:
                  Updated: