[bug #62685] Measuring the std of objects/clumps instead of the sky std

[Raul Infante-Sainz]

URL:
  <https://savannah.gnu.org/bugs/?62685>

                 Summary: Measuring the std of objects/clumps instead of the
sky std
                 Project: GNU Astronomy Utilities
               Submitter: infantesainz
               Submitted: Thu 30 Jun 2022 01:24:04 PM UTC
                Category: MakeCatalog
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any


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Follow-up Comments:


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Date: Thu 30 Jun 2022 01:24:04 PM UTC By: Raul Infante-Sainz <infantesainz>
In MakeCatalog, when asking for a general parameter, it is computed using the
values file. However, this is not true when asking for the standard deviation
'--std'. In this case, right now, it computes the standard deviation that is
below the object/clump by considering the sky extensions. But this is a bug,
it is not what the user expects.

The standard deviation should be a measurement of the pixels of the
object/clump. It is important to note that '--sigclip-std' works as expected
because it computes the sigma-clip standard deviation of the object/clump.

I propose a new parameter, '--skystd', which would be the current and wrong
'--std'. Consequently, the '--std' would become the standard deviation of the
object (not the sky).







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