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The fiber magnitude

The flux contained within the aperture of a spectroscopic fiber (3" in diameter) is calculated in each band and stored in fiberMag.

Notes:
-For children of deblended galaxies, some of the pixels within a 1.5" radius may belong to other children; we now measure the flux of the parent at the position of the child; this properly reflects the amount of light which the spectrograph will see. This was not true in the EDR.
-Images are now convolved to 2" seeing before fiberMags are measured. This also makes the fiber magnitudes closer to what is seen by the spectrograph. This was not true in the EDR.