Named after the 17th century French theologian, Denis Petau, this 188-km wide circular formation on the southeastern bank of Mare Fecundidatis is one of a handful of craters characterized with a fractured floor which, in this case, emanates from the central peak and terminates on the southwest periphery. Measuring approximately 80 km in length and 2 km in width, the rille is visible under good seeing conditions. Even more difficult to observe, however, is a second rille also emanating from the central peak and extending towards the north but which is significantly shorter in length. As indicated by the image below, the floor is riddled with various rilles emanating from the central peak and which generally point north; to the south of the peak, there appears to be a large aggregation of domes.
Feature: Crater Petavius Quadrant: S/E Lunar Coordinates: 25.1° S 60.4° E Length: 188.0 km Height: 3.3 km Lunation Age: 17d 08h 17m Phase: 92.6° Diameter: 31.78' Magnitude: -11.9 Rukl: 59 |
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Date: Oct 20, 2005 02:22 - 02:28 UT+3 Location: Athens, Greece Equipment: AP 160 f/7.5 StarFire EDF TeleVue 3X Barlow Losmandy G-11 GEM Philips ToUCam PCVC 740k Baader UV/IR-Cut Filter (1.25") Video Imaging: 3 AVI @ 10 fps (3600 frames)
Software: K3CCDTools V2.4.9.895 HandyAVI V1.7 Registax V2.1.0.0 Photoshop CS-II Processing: Selective Sampling (119/3600) Registration & Alignment Average Combine JPG Compression |