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[task #15767] Extinction calculators in Gnuastro

From: Mohammad Akhlaghi
Subject: [task #15767] Extinction calculators in Gnuastro
Date: Mon, 31 Aug 2020 11:34:22 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:80.0) Gecko/20100101 Firefox/80.0


                 Summary: Extinction calculators in Gnuastro
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Mon 31 Aug 2020 04:34:20 PM BST
         Should Start On: Mon 31 Aug 2020 12:00:00 AM BST
   Should be Finished on: Mon 31 Aug 2020 12:00:00 AM BST
                Category: New program
                Priority: 5 - Normal
              Item Group: Enhancement
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00



The internal structures within our galaxy imprints their colors on the
extra-galactic sources, or even sources that are very deep inside our own
galaxy and in doing many aspects of astrophysics, we need to account and
correct for this added color factor.

This is called "extinction" and online calculators exist for it, like this one
provided by NED:

It would be very useful if Gnuastro also had a program that could return a
similar calculation when a given RA an Dec are given.


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