M87 - big image with 2-part extrapolation method

First we follow the methods used on the smaller M87 image analysis (here), but on the largest/newest image of M87:


The plan:
Make a total mask (MTM.pl), which consists of:
    final star mask () Mbad.pl
    hand mask ()       Mhand.pl
    OBJ mask ()       Mr38sP1.pl
    UN mask ()        Mcent80.pl [80" radius circle unmasked]
Use this mask and run ellipse to fit the galaxy [stop at SMA=1300px, step=0.2, start at 40px center can vary, no limits on grad.rel.err. or flagged]
                                     [note, to use ellipse, each time you have to be sure you have an image M.fit (instead of .fits) and put the desired mask into M.pl, and it will be used properly]
Use bmodel to generate a model of the fit
Subtract this model off of the original image
Run OBJ mask on this image -- makes OBJmask #2
Make a new total mask (MTM2.pl), which consists of
    final star mask
    hand mask
    OBJmask #2 (from above) -- this makes it an iterative process



UN-masks:

Mun50.pl	MUN50.pl
Mun100.pl	MUN100.pl
Mun150.pl	MUN150.pl

Real fit and artdata/extrapolated fit
  

Comparing/seaming the real galaxy with the simulated:                                                            Close-up



And the final subtraction:
[Msubtract.fits]                                                                                                          binned with rmed i=2, o=3  [Msubtract25.fits]
   


  


  




















An example of a really good seam along the way:

[Click the image to toggle between an image with the seam marked, and without]























[Click the image to toggle between an image with the seam marked, and without]













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