![]() ![]() It's a long way from any permanently shadowed region, which makes capturing its deep spots particularly difficult. Antoniadi is almost a southern circumpolar feature, where shadows are always long and enduring. Unfortunately, the deepest parts of Antoniadi A's interior, usually stay in deep shade. The informally-named 11 kilometer-wide simple crater inside the southern interior is Antoniadi A, confirmed now as host of the deepest elevations on the lunar surface. ![]() We weren't disappointed at all, and yet the really deep spot in Antoniadi is now reliably measured at the bottom of the unnamed largest crater (diameter 11.2 km) within Antoniadi we've long informally been referring to as "Antoniadi A."Īntoniadi - seen through the High-Definition Television camera on-board Japan's SELENE-1 orbiter " Kaguya" in 2007. Clicking your way toward a feature, and seeing many NAC observation frames layered over the LROC WAC monochrome mosaic pulls the user in from far above the Moon to full resolution.Īfter the release of LRO's Lunar Orbital Laser Altimeter (LOLA) Featured Image of Antoniadi Crater, after already using the nearly-as-new LROC Global WAC Viewer to get a closer look at the obscure but still very discernible outlines of Mare Australe, we used that same Viewer also to examine close-up Antoniadi through the LROC WAC Mosaic Viewer, hoping to compare the detail with what had, not long ago, also been photographed by Japan's Kaguya, using that vehicle's instruments. That job may become much easier with the Quick Map, which, like the Lunar Orbiter and Clementine imagery available through Map-A-Planet interface maintained by the Astrogeology section of the United States Geologic Survey ( USGS), begins with a equidistant cylindrical map of the Moon. ![]() LROC principal investigator Mark Robinson and his team at Arizona State University has, however, recently given the world's planetary science enthusiasts another new tool.Įvery three months, with the publishing of another the newest big volume of LROC photographs to the Planetary Data System, we a handful of sites, a few of them already well-surveyed, and many not given the attention we anticipate, to see what's new. In of itself we've never expected to see anything unremarkable at that location, and there are other sites we're hoping to see that are still not in the admittedly enormous amount of LROC data already cataloged and available online. Among the many places on the Moon we're patiently waiting to see through the unprecedented array on-board LRO, including a high-resolution LROC Narrow Angle Camera (NAC) glance into the depths of the crater within Antoniadi now confidently believed to be the lowest point on the Moon (very near 70.38°S, 187.2☎), over 9,000 meters below global mean elevation. ![]()
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