[R] How do I find the apparent magnitude of a galaxy from a FITS file?

[andrej]

[1] Oh, that kind of duplicate... I thought you meant duplicate in that
someone else had already asked how to use R to analyze FITS images. Well
every time I post, I get the "Mailing List Subscription Reminder." I suppose
you want me to just click on "I'm already a subscriber" and just post here
then.

[2] I obtained R (actually R64) from the following website:
http://cran.cnr.berkeley.edu/bin/macosx/

I guess it didn't come with an 'sos' package. I assume it's here:
http://cran.r-project.org/web/packages/sos/index.html

and when I download/expand the package, I get a bunch of files, but I didn't
see anything in them or the sos.pdf manual that tells me where the files go.


[3] Anyway, does anyone know of how to do FITS magnitudes in R, or at least
know of a community that uses R to look at and analyze FITS images?



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