Keywords: Main and Challis craters 4128 h3.jpg Main above center and Challis below center near the north pole of the moon Streak at bottom is blemish on original Reprocessed Lunar Orbiter 4 image cropped in GIMP <br>The original image is in the public domain because it is a work of the U S Government NASA <br/> Immediate source Lunar and Planetary Institute Lunar Orbiter Photo Gallery<br>Lunar Orbiter 4 image 128 h3 http //www lpi usra edu/resources/lunarorbiter/images/print/4128_h3 jpg created 2016 original image acquired 1967 James Stuby based on NASA image<br/> Jstuby wikipedia en Cc-zero Original upload log en wikipedia Main+and+Challis+craters+4128+h3 jpg wikitable - 2016-01-29 22 59 1300×1500× 351206 bytes Jstuby Main crater above center and Challis crater below center near the north pole of the moon Streak at bottom is blemish on original Reprocessed Lunar Orbiter 4 image cropped in GIMP <br>The or Challis crater Main crater |