>"green"</code>,
<code>"red"</code>, <code>"nir"</code>, <code>"swir1"</code>, <code>"tirs1"</code>,
<code>"tirs2"</code>, or <code>"swir2"</code>.  If <code>band</code> is not given, the
(<code>"tirs1"</code>) will be used if it exists in the object data, or
otherwise the first band will be used.  In addition to the above, using
<code>band="temperature"</code> will plot an estimate of at-satellite
brightness temperature, computed from the <code>tirs1</code> band, and
<code>band="terralook"</code> will plot