Reprocessed Lunar Orbiter 4 image cropped in Adobe Photoshop to show Regiomontanus crater and surrounding terrain. The apparent horizontal line near the bottom of the image is an artifact 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 = [[Regiomontanus (crater)]], on the moon. |Source = Reprocessed [[Lunar Orbiter 4]] image cropped in Adobe Photoshop to show Regiomontanus crater and surrounding terrain. The apparent horizontal line near the bottom of the ...