Source list table Stores information about each source in the
current source-list. The source number corresponds to the number on the image.
logger table Stores the recomputed photometry parameters for a
selected source, including the original value. This table is cleared when a
source is selected.
average magnitude table This table stores the running average
magnitudes computed from the logger table- each time the apply button
is clicked an average magnitude is computed from all the entries in the logger
table and added to the table.
