bibliography fixes
more minor edits
Small change to temp contrast drawing
Mispelled plot label
Fix equation typo
Correct FWHM feedhorn beam widths.

There were two problems. First, I was using the sigma, not FWHM,
for the angular width. Second, I was using the HWHM, not the FWHM,
for the radial distance on the primary.
Fix beam sigma, min/max angles

Now consistent with table in ch 4
Per conrad, 'staring" is confusing.
Correct LN2 boiling point in Boulder.
Edits from Kent.
Acknowledgements!
CU formatting requirements.

1. page numbers in same location on all pages
2. No blank pages (i.e., start chapters on next page, even if that
   is an even-numbered page). This must include the first chapter!