This image shows the lunar feature of Rupes Recta - The Straight Fault. It is over 100 Km long and has a height of between 250 to 300 meters. Depending on the angle of illumination the fault can sometimes be difficult to see.
250mm F5 Newtonian telescope on a EQ 6 mount. Philips Toucam Pro web cam
K3 CCD Tools & Registax
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