A reference to a photo of the Spitzer Space Telescope now goes to an updated photo showing the Herschel Space Telescope, so:
on p. 391, column 2, line –2, “(Section 3.8c, Figure 3–32a)” for Spitzer should say simply “(Section 3.8c)”;
on p. 392, column 1, line 5, add: “(See Section 3.8c, Figure 3–32a.)”.
Clarification of Figure 15-11 on p. 392:
Note that strips (a) through (m) are organized top to bottom.