[gnuastro-devel] [task #14167] Calculating the upper limit magnitude for each detection

[Mohammad Akhlaghi]

URL:
  <http://savannah.gnu.org/task/?14167>

                 Summary: Calculating the upper limit magnitude for each
detection
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Thu 29 Sep 2016 10:50:33 PM JST
         Should Start On: Thu 29 Sep 2016 12:00:00 AM JST
   Should be Finished on: Thu 29 Sep 2016 12:00:00 AM JST
                Category: MakeCatalog
                Priority: 7 - High
              Item Group: New feature
                  Status: In Progress
                 Privacy: Public
        Percent Complete: 70%
             Assigned to: makhlaghi
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00

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Details:

One very important factor in measuring the magnitude of an object is this:
what is the faintest acceptable magnitude for a given object (segmentation
map) in an image? This depends on various things like the depth of the image,
image correlated noise, or the shape and size of the object. 

The standard way of finding this upper limit for an object is to measure the
flux in a large number of randomly positioned (but identical in shape)
segments over un-detected regions of the image. 

For another project, I recently wrote an implementation of this process using
Gnuastro's newly installed libraries. So I am now busy implementing it within
MakeCatalog as a new column that the user can ask for.




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