Filter Curves CD13 and CD14

I put together a filter curve plot based on what we have for CD13 and CD14.  Note that this should mostly be read for where we have coverage and where we don't.  Each filter throughput has been normalized to its peak at angles > 45 degrees.  We can't currently use this plot for instrument efficiency as a function of wavelength.

Note that for CD14, we were throwing light away as shown by the strong glint.  This will generally mess up the high angle measurements.  For example, I don't think the Soifer, UKIRT, and 18a w/ZnSe really trail off that way.

From the figure and data in hand, we need new MgF2 blockers for the N04582, BP6000, and BP6600 filters.  It would be nice to find a filter that goes down to 15.5 microns since the atmosphere is open there.  Likewise, it would be nice to get something centered at 20 microns, but I think this isn't a high priority given the misalignment in CD14.  There are a few we still have to test for the above plot and then we likely need to do more comprehensive throughput tests.