Difference between revisions of "April 24, 2005"
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=Fabulous Fab!= | =Fabulous Fab!= | ||
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| − | + | [[File:LPOD-2005-04-24.jpeg|LPOD-2005-04-24.jpeg]] | |
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| − | <tr><td><div align="center" class="main_sm">Image Credit: [mailto:mwirths@superaje.com Mike Wirths]</p> | + | <tr><td><div align="center" class="main_sm"><p>Image Credit: [mailto:mwirths@superaje.com Mike Wirths]</p> |
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<p align="center"><b>Fabulous Fab!</b></p> | <p align="center"><b>Fabulous Fab!</b></p> | ||
| − | <p align="left">Have you ever looked carefully at Fabricius? I hadnt until I studied this great image. Usually Fabricius is seen as an obstruction hiding part of the floor of the large crater Janssen, but it is a fascinating crater in its own right. Fabricius (diameter 78 km) is mostly a Tycho-like complex crater, with terraced rim, flat floor and central peak. But the floor contains a horseshoe-like massive ridge. This is does not make Fabricius a [http://cwm.lpod.org/DataStuff/ffc.htm floor-fractured crater] - their concentric pattern is of rilles. I would guess that the floor arc of Fabricius formed by a terrace sliding down the crater walls. The ridge is completely free of the wall on the NW side, but is adjacent to the SE wall, like a normal terrace. On the southern portion of the floor a small crater occurs in the middle of a short rille, one of the few in a highlands crater. The rim of Fabricius has two abnormalities to notice. On the left (S), an angular scallop suggests that a large rim collapse started but | + | <p align="left">Have you ever looked carefully at Fabricius? I hadnt until I studied this great image. Usually Fabricius is seen as an obstruction hiding part of the floor of the large crater Janssen, but it is a fascinating crater in its own right. Fabricius (diameter 78 km) is mostly a Tycho-like complex crater, with terraced rim, flat floor and central peak. But the floor contains a horseshoe-like massive ridge. This is does not make Fabricius a [http://cwm.lpod.org/DataStuff/ffc.htm floor-fractured crater] - their concentric pattern is of rilles. I would guess that the floor arc of Fabricius formed by a terrace sliding down the crater walls. The ridge is completely free of the wall on the NW side, but is adjacent to the SE wall, like a normal terrace. On the southern portion of the floor a small crater occurs in the middle of a short rille, one of the few in a highlands crater. The rim of Fabricius has two abnormalities to notice. On the left (S), an angular scallop suggests that a large rim collapse started but didn't collapse entirely. At the bottom (W) of the crater a thin ridge extends from the rim onto the adjacent highland and then curves back. This looks like another place where a rim scallop subsided only slightly. Compare this image with the Lunar Orbiter IV image - they have essentially the same resolution!</p> |
| − | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | + | <blockquote> |
| − | <p align="left" | + | <p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</p></blockquote> |
| + | <p align="left"><b>Technical Details:</b><br> | ||
April 15, 2005. 18" dob + Atik webcam + 5X's barlow + Baader IR passband filter.</p> | April 15, 2005. 18" dob + Atik webcam + 5X's barlow + Baader IR passband filter.</p> | ||
<p><b>Related Links:</b><br> | <p><b>Related Links:</b><br> | ||
| − | [ | + | [http://www.lpi.usra.edu/resources/lunar_orbiter/images/img/iv_071_h2.jpg Lunar Orbiter IV View] |
<br>Rukl Plate 68 | <br>Rukl Plate 68 | ||
| − | <p | + | </p> |
| + | <p><b>Yesterday's LPOD:</b> [[April 23, 2005|The Best Lava Flow on the Moon]] </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> [[April 25, 2005|A Chain of Mystery]] </p> | ||
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<p align="center" class="main_titles"><b>Author & Editor:</b><br> | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | ||
[mailto:tychocrater@yahoo.com Charles A. Wood]</p> | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | ||
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Latest revision as of 14:14, 15 March 2015
Fabulous Fab!
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Image Credit: Mike Wirths |
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Fabulous Fab! Have you ever looked carefully at Fabricius? I hadnt until I studied this great image. Usually Fabricius is seen as an obstruction hiding part of the floor of the large crater Janssen, but it is a fascinating crater in its own right. Fabricius (diameter 78 km) is mostly a Tycho-like complex crater, with terraced rim, flat floor and central peak. But the floor contains a horseshoe-like massive ridge. This is does not make Fabricius a floor-fractured crater - their concentric pattern is of rilles. I would guess that the floor arc of Fabricius formed by a terrace sliding down the crater walls. The ridge is completely free of the wall on the NW side, but is adjacent to the SE wall, like a normal terrace. On the southern portion of the floor a small crater occurs in the middle of a short rille, one of the few in a highlands crater. The rim of Fabricius has two abnormalities to notice. On the left (S), an angular scallop suggests that a large rim collapse started but didn't collapse entirely. At the bottom (W) of the crater a thin ridge extends from the rim onto the adjacent highland and then curves back. This looks like another place where a rim scallop subsided only slightly. Compare this image with the Lunar Orbiter IV image - they have essentially the same resolution! Technical Details: Related Links: Yesterday's LPOD: The Best Lava Flow on the Moon Tomorrow's LPOD: A Chain of Mystery |
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Author & Editor: |
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