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Copilot

v17	v18
108	108	is shown with a triangle, and a circle will also be plotted at the
109	109	lower or upper bound line. Triangles above the upper bound indicate
110		images that might not be as deep as desired.
	110	images that might not be as deep as desired. Sometimes a line is visible in this plot (e.g. see 10hr - 11hr above 250 sec). This is the predicted max exposure time to saturate (really to get to a "do not cross" number of counts) the background. This relates to safety of the detectors. If you notice real exposure times are getting close to this line, its time to stop tonight.sh and take stock. This most easily would happen with moon and clouds which make the background high.
111	111
112	112	[depth factor has been removed from the plot. This description is useful when looking at plots created before about February 2016] The "depth factor" plot just shows our actual exposure time divided by