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  1. Data Management
  2. DM-10835

Add color terms for NB filters

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: obs_subaru
    • Labels:
      None
    • Team:
      Data Release Production

      Description

      Furusawa-san writes:

      I have determined the color terms for the new 3 narrow bands for PS1
      bands. I feel like I would like to update only the 3 bands for now not
      to destroy things in the other bands in this last minute change.
      Do you agree with this idea? Or should we update all the other bands
      as well for consistency?

      'N387': ColortermConfig.fromValues("g", "r",  0.549932112641, 1.93524092848, 0.335209939226), # fit to GS83 at g-r=(-1, 1.25)
      'N718': ColortermConfig.fromValues("i", "r", -0.0374215790806, -0.293620763883, 0.190069559821),  # fit to GS83 at g-r=(-1, 2)
      'N973': ColortermConfig.fromValues("y", "z", -0.0064016547183, -0.0391528142634, -0.240885647814), # fit to GS83 at g-r=(-1.5, 0.5)
      

      altenatives

      'N718': ColortermConfig.fromValues("r", "i", -0.0374215792408, -0.706379236521, 0.190069560819),  # fit to GS83 at g-r=(-1, 2)
      'N973': ColortermConfig.fromValues("z", "i", 0.0126946008687, 0.282064376721, -0.0636499458066), # fit to GS83 at g-r=(-3, 3)
      

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            Hide
            price Paul Price added a comment -

            Thanks for agreeing to review this, Bob Armstrong. It's pretty simple:

            price@pap-laptop:~/LSST/obs_subaru (tickets/DM-10835=) $ git sub-patch
            commit 0fdf0a33850641fea96739d46975a1375b1465da
            Author: Paul Price <price@astro.princeton.edu>
            Date:   Tue Jun 6 15:28:28 2017 -0400
             
                config: add hsc NB color terms
                
                These values were calculated by Hisanori Furusawa from
                fits to synthetic photometry from the Gunn-Stryker (1983)
                atlas.
                
                Fits were done over the following color ranges:
                * N387: g-r=(-1, 1.25)
                * N718: g-r=(-1, 2)
                * N973: g-r=(-1.5, 0.5)
             
            diff --git a/config/hsc/colorterms.py b/config/hsc/colorterms.py
            index 467c2ef..d64c4f4 100644
            --- a/config/hsc/colorterms.py
            +++ b/config/hsc/colorterms.py
            @@ -29,7 +29,10 @@ config.data = {
                     'i2': Colorterm(primary="i", secondary="z", c0=0.00180361, c1=-0.18483562, c2=-0.02675511),
                     'z': Colorterm(primary="z", secondary="y", c0=-0.00907517, c1=-0.28840221, c2=-0.00316369),
                     'y': Colorterm(primary="y", secondary="z", c0=-0.00156858, c1=0.14747401, c2=0.02880125),
            +        'N387': Colorterm(primary="g", secondary="r", c0=0.54993211, c1=1.93524093, c2=0.33520994),
            +        'N718': Colorterm(primary="i", secondary="r", c0=-0.03742158, c1=-0.29362076, c2=0.19006956),
                     'N816': Colorterm(primary="i", secondary="z", c0=0.01191062, c1=-0.68757034, c2=-0.10781564),
                     'N921': Colorterm(primary="z", secondary="y", c0=0.00142051, c1=-0.59278367, c2=-0.25059679),
            +        'N973': Colorterm(primary="y", secondary="z", c0=-0.00640165, c1=-0.03915281, c2=-0.24088565),
                 }),
             }
            

            Show
            price Paul Price added a comment - Thanks for agreeing to review this, Bob Armstrong . It's pretty simple: price@pap-laptop:~/LSST/obs_subaru (tickets/DM-10835=) $ git sub-patch commit 0fdf0a33850641fea96739d46975a1375b1465da Author: Paul Price <price@astro.princeton.edu> Date: Tue Jun 6 15:28:28 2017 -0400   config: add hsc NB color terms These values were calculated by Hisanori Furusawa from fits to synthetic photometry from the Gunn-Stryker (1983) atlas. Fits were done over the following color ranges: * N387: g-r=(-1, 1.25) * N718: g-r=(-1, 2) * N973: g-r=(-1.5, 0.5)   diff --git a/config/hsc/colorterms.py b/config/hsc/colorterms.py index 467c2ef..d64c4f4 100644 --- a/config/hsc/colorterms.py +++ b/config/hsc/colorterms.py @@ -29,7 +29,10 @@ config.data = { 'i2': Colorterm(primary="i", secondary="z", c0=0.00180361, c1=-0.18483562, c2=-0.02675511), 'z': Colorterm(primary="z", secondary="y", c0=-0.00907517, c1=-0.28840221, c2=-0.00316369), 'y': Colorterm(primary="y", secondary="z", c0=-0.00156858, c1=0.14747401, c2=0.02880125), + 'N387': Colorterm(primary="g", secondary="r", c0=0.54993211, c1=1.93524093, c2=0.33520994), + 'N718': Colorterm(primary="i", secondary="r", c0=-0.03742158, c1=-0.29362076, c2=0.19006956), 'N816': Colorterm(primary="i", secondary="z", c0=0.01191062, c1=-0.68757034, c2=-0.10781564), 'N921': Colorterm(primary="z", secondary="y", c0=0.00142051, c1=-0.59278367, c2=-0.25059679), + 'N973': Colorterm(primary="y", secondary="z", c0=-0.00640165, c1=-0.03915281, c2=-0.24088565), }), }
            Hide
            rearmstr Bob Armstrong added a comment -

            Looks good.

            Show
            rearmstr Bob Armstrong added a comment - Looks good.
            Hide
            price Paul Price added a comment -

            Jenkins passed. Merged to master.

            Thanks Bob.

            Show
            price Paul Price added a comment - Jenkins passed. Merged to master. Thanks Bob.

              People

              • Assignee:
                price Paul Price
                Reporter:
                price Paul Price
                Reviewers:
                Bob Armstrong
                Watchers:
                Bob Armstrong, Paul Price
              • Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: