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| | <p>[[File:Bullialdus_valleyLPOD.jpg|bullialdus_valleyLPOD.jpg]]<br /> | | <p>[[File:Bullialdus_valleyLPOD.jpg|bullialdus_valleyLPOD.jpg]]<br /> |
| | <em>drawing by [mailto:harry128@ozemail.com.au Harry Roberts]</em></p> | | <em>drawing by [mailto:harry128@ozemail.com.au Harry Roberts]</em></p> |
| − | <p>Maria are not flat, they drape underlying features, smoothing them out, making detection and interpretation difficult. That is why its fun looking near the terminator when it is near a mare surface. Harry became fascinated with features on, under? above? Mare Nubium west of Bullialdus. He notes a causeway (on Earth an elevated passageway) and wondered what caused it. Rükl noted the causeway in his <em>Atlas of the Moon</em> and a number of observers have commented on it, but what is it? The first thing to note is that the causeway seems to span a broad linear depression that strangely has a designation: Bullialdus W. Lunar Orbiter IV [[iv_125_h2.jpg|shows]] that this trough is bounded on both sides by low mare ridges which define the linear area, but there could be no actual depression. A <em>Consolidated Lunar Atlas</em> [http://www.lpod.org/coppermine/displayimage.php?pid=463&fullsize=1 image] suggests that the south (bottom) side of the trough is actually a broad, flattish mare ridge. By now you may have forgotten about the causeway, which is good, because I have no idea what it is.</p> | + | <p>Maria are not flat, they drape underlying features, smoothing them out, making detection and interpretation difficult. That is why its fun looking near the terminator when it is near a mare surface. Harry became fascinated with features on, under? above? Mare Nubium west of Bullialdus. He notes a causeway (on Earth an elevated passageway) and wondered what caused it. Rükl noted the causeway in his <em>Atlas of the Moon</em> and a number of observers have commented on it, but what is it? The first thing to note is that the causeway seems to span a broad linear depression that strangely has a designation: Bullialdus W. Lunar Orbiter IV [http://www.lpi.usra.edu/resources/lunar_orbiter/images/img/iv_125_h2.jpg shows] that this trough is bounded on both sides by low mare ridges which define the linear area, but there could be no actual depression. A <em>Consolidated Lunar Atlas</em> [http://www.lpod.org/coppermine/displayimage.php?pid=463&fullsize=1 image] suggests that the south (bottom) side of the trough is actually a broad, flattish mare ridge. By now you may have forgotten about the causeway, which is good, because I have no idea what it is.</p> |
| | <p>[mailto:tychocrater@yahoo.com Chuck Wood]</p> | | <p>[mailto:tychocrater@yahoo.com Chuck Wood]</p> |
| | <p><strong>Technical Details:</strong><br /> | | <p><strong>Technical Details:</strong><br /> |
| − | 16 July 2005. C8 at 160X. See the [http://www.lpod.org/?m=20060201 Feb 1] LPOD for a description of Harry’s artistic techniques.<br /> | + | 16 July 2005. C8 at 160X. See the [[February_1,_2006|Feb 1]] LPOD for a description of Harry’s artistic techniques.<br /> |
| | <strong>Related Links:</strong><br /> | | <strong>Related Links:</strong><br /> |
| | Rükl chart 53<br /> | | Rükl chart 53<br /> |
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| | <p><b>Yesterday's LPOD:</b> [[September 22, 2006|Hell Plain]] </p> | | <p><b>Yesterday's LPOD:</b> [[September 22, 2006|Hell Plain]] </p> |
| | <p><b>Tomorrow's LPOD:</b> [[September 24, 2006|Ramadan]] </p> | | <p><b>Tomorrow's LPOD:</b> [[September 24, 2006|Ramadan]] </p> |
| − | <!-- Removed reference to store page --> | + | <!-- Removed reference to store page 2 --> |
| | </div> | | </div> |
| | <!-- End of content --> | | <!-- End of content --> |
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