Difference between revisions of "March 15, 2004"

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=Peaks of Plato=
 
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      <td width="50%"><h2 align="left">Peaks of Plato</h2></td>
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      <td><div align="center" span class="main_sm">Image Credit:  [mailto:starman2@flash.net Wes Higgins]</div></td>
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<td><div align="center"><p>Image Credit:  [mailto:starman2@flash.net Wes Higgins]</p></div></td>
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<p class="story" align="center"><b>Peaks of Plato </b></p>
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  <p class="story" align="center"><b>Peaks of Plato </b></p>
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<p class="story" align="left">        The Moon always repays observation. For sociological reasons (sleep and jobs), Plato is commonly studied before
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+
midnight, and so the sunrise view with shadows cast by peaks on the eastern ramparts is most familiar. But this  
−
  <p class="story" align="left">        The Moon always repays observation. For sociological reasons (sleep and jobs), Plato is commonly studied before
+
wonderful sunset view, taken when the Moon was about 23 days old, reveals long shadows from the western peaks  
−
        midnight, and so the sunrise view with shadows cast by peaks on the eastern ramparts is most familiar. But this  
+
that most of us never see. The longest shadow is about 45 km long; Plato is 101 km wide. Surprisingly, this  
−
        wonderful sunset view, taken when the Moon was about 23 days old, reveals long shadows from the western peaks  
+
tallest peak on the western rim doesn't have a Greek letter designation. Most of the Greek letters for lunar  
−
        that most of us never see. The longest shadow is about 45 km long; Plato is 101 km wide. Surprisingly, this  
+
mountains were given by [[January_16,_2004|Madler]] and Neison, but all are ignored by the  
−
        tallest peak on the western rim doesn't have a Greek letter designation. Most of the Greek letters for lunar  
+
International Astronomical Union because of the difficulty in identifying them. If you mouse over the image  
−
        mountains were given by [../01/LPOD-2004-01-16.htm Madler] and Neison, but all are ignored by the  
+
above you will see the Greek letters for Plato's rim, taken from the Blagg and Muller IAU map of 1935. I have  
−
        International Astronomical Union because of the difficulty in identifying them. If you mouse over the image  
+
added two (totally unofficial) additional Greek letters - omega and phi - for the two tallest peaks on Plato's  
−
        above you will see the Greek letters for Plato's rim, taken from the Blagg and Muller IAU map of 1935. I have  
+
western rim, which strangely lacked letters. The large rim collapse segment was labeled zeta by Madler. There are  
−
        added two (totally unofficial) additional Greek letters - omega and phi - for the two tallest peaks on Plato's  
+
no spacecraft heights for these peaks that I am aware of , but the US Air Force Chart and Aeronautical Center  
−
        western rim, which strangely lacked letters. The large rim collapse segment was labeled zeta by Madler. There are  
+
maps (available most readily in <I>The Times Altas of the Moon</I>, 1969) include the following heights derived  
−
        no spacecraft heights for these peaks that I am aware of , but the US Air Force Chart and Aeronautical Center  
+
from shadow measurements made in the 1960s.
−
        maps (available most readily in <I>The Times Altas of the Moon</I>, 1969) include the following heights derived  
+
</p>         
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        from shadow measurements made in the 1960s.
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        <blockquote><TABLE CELLSPACING=2 CELLPADDING=2 BORDER=1>
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<TR BGCOLOR="GRAY"><TD><CENTER>Peak  </CENTER></TD>
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                    <TR BGCOLOR="GRAY"><TD><CENTER>Peak  </CENTER></TD>
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<TD><CENTER>Height</CENTER></TD>
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                                      <TD><CENTER>Height</CENTER></TD>
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</TR>
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                    </TR>
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<TR><TD><CENTER><FONT COLOR="BLACK">delta</FONT></CENTER></TD>
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                    <TR><TD><CENTER><FONT COLOR="BLACK">delta</FONT></CENTER></TD>
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<TD><CENTER><FONT COLOR="BLACK">2440 m</FONT></CENTER></TD>
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                        <TD><CENTER><FONT COLOR="BLACK">2440 m</FONT></CENTER></TD>
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</TR>
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                    </TR>
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<TR><TD><CENTER><FONT COLOR="BLACK">omega</FONT></CENTER></TD>
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                    <TR><TD><CENTER><FONT COLOR="BLACK">omega</FONT></CENTER></TD>
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<TD><CENTER><FONT COLOR="BLACK">2300 m</FONT></CENTER></TD>
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                        <TD><CENTER><FONT COLOR="BLACK">2300 m</FONT></CENTER></TD>
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</TR>
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                    </TR>
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<TR><TD><CENTER><FONT COLOR="BLACK">gamma</FONT></CENTER></TD>
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                    <TR><TD><CENTER><FONT COLOR="BLACK">gamma</FONT></CENTER></TD>
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<TD><CENTER><FONT COLOR="BLACK">2140 m</FONT></CENTER></TD>
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                        <TD><CENTER><FONT COLOR="BLACK">2140 m</FONT></CENTER></TD>
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</TR>
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                    </TR>
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<TR><TD><CENTER><FONT COLOR="BLACK">phi</FONT></CENTER></TD>
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                    <TR><TD><CENTER><FONT COLOR="BLACK">phi</FONT></CENTER></TD>
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<TD><CENTER><FONT COLOR="BLACK">1870 m</FONT></CENTER></TD>
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                        <TD><CENTER><FONT COLOR="BLACK">1870 m</FONT></CENTER></TD>
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</TR>
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                    </TR>
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<TR><TD><CENTER><FONT COLOR="BLACK">epsilon</FONT></CENTER></TD>
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                    <TR><TD><CENTER><FONT COLOR="BLACK">epsilon</FONT></CENTER></TD>
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<TD><CENTER><FONT COLOR="BLACK">1790 m</FONT></CENTER></TD>
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                        <TD><CENTER><FONT COLOR="BLACK">1790 m</FONT></CENTER></TD>
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</TR>
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                    </TR>
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<TR><TD><CENTER><FONT COLOR="BLACK">zeta</FONT></CENTER></TD>
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                    <TR><TD><CENTER><FONT COLOR="BLACK">zeta</FONT></CENTER></TD>
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<TD><CENTER><FONT COLOR="BLACK">1310 m</FONT></CENTER></TD>
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                        <TD><CENTER><FONT COLOR="BLACK">1310 m</FONT></CENTER></TD>
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</TR>
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                    </TR>
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</TABLE>
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                </TABLE>
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</blockquote>
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        </blockquote>
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<p>
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        <p>
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As I stated recently there is need for modern determinations/confirmations of peak  
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        As I stated recently there is need for modern determinations/confirmations of peak  
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[[February_4,_2004|heights]], which will require figuring our peak  
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        [../02/LPOD-2004-02-04.htm heights], which will require figuring our peak  
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[[February_4,_2004|nomenclature]]. The IAU isn't going to do it!  
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        [../02/LPOD-2004-02-04.htm nomenclature]. The IAU isn't going to do it!  
+
</p>
 +
<p><b>Technical Details:</b><br>
 +
Plato on 10/18/03. This is a stack of 224 frames from 600, taken with a Starmaster 14.5 F/4.3
 +
working at F/28, Toucam Pro Webcam, 10FPS, stacked and processed in Registax.
 
</p>
 
</p>
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<p class="story"><b>Related Links:</b><br>
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  <p><b>Technical Details:</b><br>
 
−
 
 
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Plato on 10/18/03. This is a stack of 224 frames from 600, taken with a Starmaster 14.5 F/4.3
 
−
working at F/28, Toucam Pro Webcam, 10FPS, stacked and processed in Registax.
 
−
</p>
 
−
 
 
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  <p class"story"><b>Related Links:</b><br>
 
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[http://www.licha.de/AstroWeb/gallery_fullsize.php3?iBPId=131&iSOId=7 Images by Wes Higgins]<br>
 
[http://www.licha.de/AstroWeb/gallery_fullsize.php3?iBPId=131&iSOId=7 Images by Wes Higgins]<br>
 
[http://www.glrgroup.org/papers/13.htm Plato Gamma Shadow]</p>
 
[http://www.glrgroup.org/papers/13.htm Plato Gamma Shadow]</p>
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<p><b>Yesterday's LPOD:</b> [[March 14, 2004|Happy Birthday, Einstein]] </p>
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  <p class"story"> <b>Tomorrow's LPOD:</b> Lunar Ephemeris</p>
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<p><b>Tomorrow's LPOD:</b> [[March 16, 2004|Lunar Ephemeris]] </p>
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<p align="center" class="main_titles"><b>Author & Editor:</b><br>
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[mailto:tychocrater@yahoo.com Charles A. Wood]</p>
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  <p align="center" class="main_titles"><b>Author & Editor:</b><br>
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<!-- Cleanup of credits -->
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      [mailto:chuck@observingthesky.org Charles A. Wood]</p>
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<!-- Cleanup of credits -->
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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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===COMMENTS?===
 
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Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.
 

Latest revision as of 19:13, 7 February 2015

Peaks of Plato


LPOD-2004-03-15.jpeg

LPOD-2004-03-15b.jpeg

Image Credit: Wes Higgins

Peaks of Plato

The Moon always repays observation. For sociological reasons (sleep and jobs), Plato is commonly studied before midnight, and so the sunrise view with shadows cast by peaks on the eastern ramparts is most familiar. But this wonderful sunset view, taken when the Moon was about 23 days old, reveals long shadows from the western peaks that most of us never see. The longest shadow is about 45 km long; Plato is 101 km wide. Surprisingly, this tallest peak on the western rim doesn't have a Greek letter designation. Most of the Greek letters for lunar mountains were given by Madler and Neison, but all are ignored by the International Astronomical Union because of the difficulty in identifying them. If you mouse over the image above you will see the Greek letters for Plato's rim, taken from the Blagg and Muller IAU map of 1935. I have added two (totally unofficial) additional Greek letters - omega and phi - for the two tallest peaks on Plato's western rim, which strangely lacked letters. The large rim collapse segment was labeled zeta by Madler. There are no spacecraft heights for these peaks that I am aware of , but the US Air Force Chart and Aeronautical Center maps (available most readily in The Times Altas of the Moon, 1969) include the following heights derived from shadow measurements made in the 1960s.

Peak
Height
delta
2440 m
omega
2300 m
gamma
2140 m
phi
1870 m
epsilon
1790 m
zeta
1310 m

As I stated recently there is need for modern determinations/confirmations of peak heights, which will require figuring our peak nomenclature. The IAU isn't going to do it!

Technical Details:
Plato on 10/18/03. This is a stack of 224 frames from 600, taken with a Starmaster 14.5 F/4.3 working at F/28, Toucam Pro Webcam, 10FPS, stacked and processed in Registax.

Related Links:
Images by Wes Higgins
Plato Gamma Shadow

Yesterday's LPOD: Happy Birthday, Einstein

Tomorrow's LPOD: Lunar Ephemeris

Author & Editor:
Charles A. Wood

 

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