UV photo of Earth taken by <a href="https://en.wikipedia.org/wiki/Apollo_16" class="extiw" title="en:Apollo 16">Apollo 16</a> with the Far UV Camera/Spectrograph. AS16-123-19657.<br>A version of this photo was used in Figure 13-7 of the <i>Apollo 16 Preliminary Science Report</i> (NASA SP-315), which has the following caption:<br>Frame 45, the Earth, target 2M, 10-min ICa exposure, showing the overexposed polar aurora and two equatorial airglow belts.<br>"ICa" means imagery through a CaF<sub>2</sub> filter-corrector with a passband of 123 to 160 nm.
Apollo 16 astronauts
1972-04-21
<a rel="nofollow" class="external free" href="https://catalog.archives.gov/id/16717066">https://catalog.archives.gov/id/16717066</a>