Reprocessed Lunar Orbiter 4 image cropped in Adobe Photoshop to show Purbach crater and surrounding terrain. The two white spots along the top of the image are artifacts of the original photo. The original image should be public domain as it is a work of the U.S. Government (NASA).
Immediate source: Lunar and Planetary Institute, Lunar Orbiter Photo Gallery Lunar Orbiter 4, image 108, h1 [1]
{{Information |Description = [[Purbach (crater)]], on the moon. |Source = Reprocessed [[Lunar Orbiter 4]] image cropped in Adobe Photoshop to show Purbach crater and surrounding terrain. The two white spots along the top of the image are artifacts of ...