Difference between revisions of "February 17, 2005"
(7 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
=Keeping Up With The Smythiis= | =Keeping Up With The Smythiis= | ||
+ | <!-- Start of content --> | ||
<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
<tr> | <tr> | ||
Line 7: | Line 8: | ||
<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
<tr><td colspan="2" valign="top"><div align="center"> | <tr><td colspan="2" valign="top"><div align="center"> | ||
− | + | <!-- Mouse style 1 --> | |
− | + | {{HoverImage|LPOD-2005-02-17.jpeg|LPOD-2005-02-17b.jpeg}} | |
− | |||
− | |||
</div></td> | </div></td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
<table width="80%" border="0" align="center" cellpadding="8"> | <table width="80%" border="0" align="center" cellpadding="8"> | ||
− | <tr><td><div align="center" class="main_sm">Image Credit: [mailto:mariosantiago@sapo.pt Mario Santiago]</p> | + | <tr><td><div align="center" class="main_sm"><p>Image Credit: [mailto:mariosantiago@sapo.pt Mario Santiago]</p> |
</div></td> | </div></td> | ||
</tr> | </tr> | ||
Line 24: | Line 23: | ||
<p align="left">The equatorial eastern limb of the Moon is more interesting than much of the terrain immediately nearer the Earthside. The reason is twofold: (1) the area between Crisium and Fecunditatis and the limb is boring because it lacks any distinctive large fresh craters, and instead is a mishmash of older, look-alike craters flooded with and surrounded by mare material; and (2) the limb is home to two maria – [[October_9,_2004| Marginis ]] and Smythii – that occupy two impact basins. Of the two, Smythii offers more vestiges of its basin structure – principally its well-defined, curved rim. When the sunset terminator is just east of Smythii you can observe the shadow cast by the rim and appreciate that the mare is substantially lower than the rim. In fact, Clementine altimeter readings show that the rim rises an amazing 6-8 km above the mare. The circular outline of the rim is clearly demonstrated in Mario’s rectified view (mouseover) of Smythii made using PlanetWarp. Also clear is the two different shades of mare lavas. Crater counts imply that the darker Smythii lavas may be among the youngest on the Moon, perhaps 1.5 b.y. old.</p> | <p align="left">The equatorial eastern limb of the Moon is more interesting than much of the terrain immediately nearer the Earthside. The reason is twofold: (1) the area between Crisium and Fecunditatis and the limb is boring because it lacks any distinctive large fresh craters, and instead is a mishmash of older, look-alike craters flooded with and surrounded by mare material; and (2) the limb is home to two maria – [[October_9,_2004| Marginis ]] and Smythii – that occupy two impact basins. Of the two, Smythii offers more vestiges of its basin structure – principally its well-defined, curved rim. When the sunset terminator is just east of Smythii you can observe the shadow cast by the rim and appreciate that the mare is substantially lower than the rim. In fact, Clementine altimeter readings show that the rim rises an amazing 6-8 km above the mare. The circular outline of the rim is clearly demonstrated in Mario’s rectified view (mouseover) of Smythii made using PlanetWarp. Also clear is the two different shades of mare lavas. Crater counts imply that the darker Smythii lavas may be among the youngest on the Moon, perhaps 1.5 b.y. old.</p> | ||
<blockquote> | <blockquote> | ||
− | <p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | + | <p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</p></blockquote> |
<p align="left"><b>Technical Details:</b><br> | <p align="left"><b>Technical Details:</b><br> | ||
13/02/2005 at 18:09/18:15 UT (in daylight!). 2 images mosaic made with Orion SkyView Pro Newtonian (8 inches f/5) + Ccd Atik 2HS + Barlow 2x + Qcfocus + Registax. Planet Warp v.1 used for warped image.</p> | 13/02/2005 at 18:09/18:15 UT (in daylight!). 2 images mosaic made with Orion SkyView Pro Newtonian (8 inches f/5) + Ccd Atik 2HS + Barlow 2x + Qcfocus + Registax. Planet Warp v.1 used for warped image.</p> | ||
<p><b>Related Links:</b><br> | <p><b>Related Links:</b><br> | ||
Rukl Plates 38 & 49 | Rukl Plates 38 & 49 | ||
− | <p | + | </p> |
+ | <p><b>Yesterday's LPOD:</b> [[February 16, 2005|A Newly Named Crater]] </p> | ||
+ | <p><b>Tomorrow's LPOD:</b> [[February 18, 2005|Memory of a Crater]] </p> | ||
</tr> | </tr> | ||
</table> | </table> | ||
Line 40: | Line 41: | ||
<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> | ||
− | < | + | <!-- Cleanup of credits --> |
− | + | <!-- Cleanup of credits --> | |
− | < | + | <!-- Cleanup of credits --> |
− | + | <!-- Cleanup of credits --> | |
− | + | <!-- Cleanup of credits --> | |
− | < | + | <!-- Cleanup of credits --> |
− | < | + | <!-- Cleanup of credits --> |
− | + | <!-- Cleanup of credits --> | |
− | < | + | <!-- Cleanup of credits --> |
− | + | <!-- Cleanup of credits --> | |
</td></tr> | </td></tr> | ||
</table> | </table> | ||
<p> </p> | <p> </p> | ||
− | ---- | + | <!-- End of content --> |
− | + | {{wiki/ArticleFooter}} | |
− |
Latest revision as of 15:11, 15 March 2015
Keeping Up With The Smythiis
Image Credit: Mario Santiago |
Keeping Up With The Smythiis The equatorial eastern limb of the Moon is more interesting than much of the terrain immediately nearer the Earthside. The reason is twofold: (1) the area between Crisium and Fecunditatis and the limb is boring because it lacks any distinctive large fresh craters, and instead is a mishmash of older, look-alike craters flooded with and surrounded by mare material; and (2) the limb is home to two maria – Marginis and Smythii – that occupy two impact basins. Of the two, Smythii offers more vestiges of its basin structure – principally its well-defined, curved rim. When the sunset terminator is just east of Smythii you can observe the shadow cast by the rim and appreciate that the mare is substantially lower than the rim. In fact, Clementine altimeter readings show that the rim rises an amazing 6-8 km above the mare. The circular outline of the rim is clearly demonstrated in Mario’s rectified view (mouseover) of Smythii made using PlanetWarp. Also clear is the two different shades of mare lavas. Crater counts imply that the darker Smythii lavas may be among the youngest on the Moon, perhaps 1.5 b.y. old. Technical Details: Related Links: Yesterday's LPOD: A Newly Named Crater Tomorrow's LPOD: Memory of a Crater |
Author & Editor: |
COMMENTS?
Register, Log in, and join in the comments.