Difference between revisions of "June 29, 2004"

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      <td><h2 align="left">Fantastic Furnerius</h2></td>
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      <td><h2 align="right">June 29, 2004</h2></td>
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      <td><div align="center" span class="main_sm">Image Credit: [mailto:jphillip@bcpl.net Jim Phillips ]</div></td>
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  <p class="story" align="center"><b>Fantastic Furnerius</b></p>
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  <p class="story" align="left">"Fantastic" is probably not an adjective that would have been applied to Furnerius anytime during the last 3 billion years!  It is a much modified older crater that has seen better eons. But this is a fantastic telescopic image - better than any in the [http://www.lpi.usra.edu/research/cla/ Consolidated Lunar Atlas]  or any other I've seen. So what does it tell us? Well, Furnerius is big enough (diameter 125 km) so that when it was formed it certainly was deep, had central peaks, and wall terraces - in fact, it probably looked like [http://www.lpod.org/archive/2004/04/LPOD-2004-04-18.htm Langrenus]  (dia. 132 km). Today Furnerius is bedraggled - it is shallow, lacks terraces and the floor is drizzled with later impacts and hills, one of which could be a central peak. Parts of the floor are smooth and a full Moon look shows that this material is dark. It is thus mare lava, perhaps an outlier of the [http://www.lpod.org/archive/2004/05/LPOD-2004-05-18.htm Mare Australe],  characterized by mare lavas that pool on crater floors. Jim's image captures very nicely the poorly known rille that cuts thru both rough floor material as well as a piece of the mare material. The rough hills on the floor are probably ejecta from the formation of the Nectaris Basin, perhaps 3.92 billion years ago. And interestingly, the younger rille is roughly radial to Nectaris. 
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    <p align="right" class="story">&#8212; [mailto:chuck@observingthesky.org Chuck Wood]</blockquote>
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  <p class="story" align="left"><b>Technical Details:</b><br>
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    April 22, 2004; TMB 8&quot; F/9 apo, webcam, registax. 3X barlow.</p>
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  <p class="story" align="left"><b>Related Links: </b><br>
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    [http://observingthesky.org/index.php?p=188 Jim Phillips &amp; Scope] <br>
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    [http://www.lpi.usra.edu/research/lunar_orbiter/images/img/iv_184_h2.jpg Lunar Orbiter IV View ]</p>
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  <p class"story"><b>Tomorrow's LPOD:</b> Tobacco Lunar Science</p>
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      <td><p align="center" class="main_titles"><b>Author & Editor:</b><br>
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          [mailto:chuck@observingthesky.org Charles A. Wood]</p>
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        <p align="center" class="main_titles"><b>Technical Consultant:</b><br>
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            [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p>
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        <p align="center" class="main_titles"><b>[mailto:webmaster@entropysponge.com Contact Webmaster]</b></p>
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        <p align="center" class="main_titles"><b>A service of:</b><br>
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            <a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a></p>
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        <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br>
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          <a class="one" href="http://antwrp.gsfc.nasa.gov/apod/astropix.html">Astronomy</a> | <a class="one" href="http://www.msss.com/">Mars</a> | <a class="one" href="http://epod.usra.edu/">Earth</a></p></td>
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<p>&nbsp;</p>
  
  

Revision as of 15:40, 4 January 2015

Fantastic Furnerius

Fantastic Furnerius

June 29, 2004

<img src="images/LPOD-2004-06-29.jpeg" name="Image1" width="419" height="425" border="0" id="Image1">

Image Credit: Jim Phillips

Fantastic Furnerius

"Fantastic" is probably not an adjective that would have been applied to Furnerius anytime during the last 3 billion years! It is a much modified older crater that has seen better eons. But this is a fantastic telescopic image - better than any in the Consolidated Lunar Atlas or any other I've seen. So what does it tell us? Well, Furnerius is big enough (diameter 125 km) so that when it was formed it certainly was deep, had central peaks, and wall terraces - in fact, it probably looked like Langrenus (dia. 132 km). Today Furnerius is bedraggled - it is shallow, lacks terraces and the floor is drizzled with later impacts and hills, one of which could be a central peak. Parts of the floor are smooth and a full Moon look shows that this material is dark. It is thus mare lava, perhaps an outlier of the Mare Australe, characterized by mare lavas that pool on crater floors. Jim's image captures very nicely the poorly known rille that cuts thru both rough floor material as well as a piece of the mare material. The rough hills on the floor are probably ejecta from the formation of the Nectaris Basin, perhaps 3.92 billion years ago. And interestingly, the younger rille is roughly radial to Nectaris.

— Chuck Wood

Technical Details:
April 22, 2004; TMB 8" F/9 apo, webcam, registax. 3X barlow.

Related Links:
Jim Phillips & Scope
Lunar Orbiter IV View

Tomorrow's LPOD: Tobacco Lunar Science

<img src="../../../MainPage/spacer.gif" width="640" height="1">

Author & Editor:
Charles A. Wood

Technical Consultant:
Anthony Ayiomamitis

Contact Webmaster

A service of:
<a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a>

Visit these other PODs:
<a class="one" href="http://antwrp.gsfc.nasa.gov/apod/astropix.html">Astronomy</a> | <a class="one" href="http://www.msss.com/">Mars</a> | <a class="one" href="http://epod.usra.edu/">Earth</a>

 


COMMENTS?

Click on this icon File:PostIcon.jpg at the upper right to post a comment.

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