Apollo 16 Hasselblad image from film magazine 120/V - Lunar orbit<br>This photo is used in Figure 4-42 of the <i>Apollo 16 Preliminary Science Report</i> (NASA SP-315), which has the following caption (edited for clarity by <i>italics</i>):<br>Mare terrain illuminated by a low Sun. The Sea of <i>Clouds</i> west of the Crater Lassell C is illuminated by an extremely low Sun. Sun elevation ranges from 3° to 4° along the left margin of the frame and from 1° to 2° along the right margin. (<i>Compare with AS16-119-19071.</i>) The low Sun enhances the detectability of faint slopes. Numerous linear patterns similar to features that have been described as flow fronts or faint mare ridges cross the surface that appeared smooth under the higher Sun. The crater population appears to have increased because the faint depressions that were inconspicuous at higher Sun now are marked by hard shadows. The prominent bright halo of the 3-km-diameter crater has faded. Although not conspicuous, the dark 3-km diameter crater retains its anomalously dark Sun-facing inner wall and the break in slope at the outer margin of the rim which set it apart at higher Sun.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/136485307@N06">Project Apollo Archive</a>
1972
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/projectapolloarchive/21983243342/">AS16-120-19223</a>