Difference between revisions of "June 10, 2004"

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(Created page with "__NOTOC__ =Peaks of Plato= ---- ===COMMENTS?=== Click on this icon image:PostIcon.jpg at the upper right to post a comment.")
 
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=Peaks of Plato=
 
=Peaks of Plato=
  
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      <table width="640"  border="0" align="center" cellpadding="4" cellspacing="2">
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          <td><h2 align="left">Peaks of Plato</h2></td>
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          <td><h2 align="right">June 10, 2004</h2></td>
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        <p class="main_sm" align="center">Image Credit: <A class="one" HREF="mailto:starman2@flash.net">Wes Higgins</A></p>
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      <table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center">
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        <tr>
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          <td><p class="Story" align="center"><b>Peaks of Plato</b></p>
 +
            <p class="story" align="left">
 +
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 [../../../LPOD-2004-01-16.htm 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 <I>The Times Altas of the Moon</I>, 1969) include the following heights derived
 +
        from shadow measurements made in the 1960s.</p>
 +
           
 +
<blockquote><TABLE CELLSPACING=2 CELLPADDING=2 BORDER=1>
 +
                    <TR BGCOLOR="GRAY"><TD><CENTER>Peak  </CENTER></TD>
 +
                                      <TD><CENTER>Height</CENTER></TD>
 +
                    </TR>
 +
                    <TR><TD>delta</FONT></CENTER></TD>
 +
                        <TD><CENTER>2440 m</CENTER></TD>
 +
                    </TR>
 +
                    <TR><TD><CENTER>omega</CENTER></TD>
 +
                        <TD><CENTER>2300 m</CENTER></TD>
 +
                    </TR>
 +
                    <TR><TD><CENTER>gamma</CENTER></TD>
 +
                        <TD><CENTER>2140 m</CENTER></TD>
 +
                    </TR>
 +
                    <TR><TD><CENTER>phi</FONT></CENTER></TD>
 +
                        <TD><CENTER>1870 m</FONT></CENTER></TD>
 +
                    </TR>
 +
                    <TR><TD><CENTER>epsilon</CENTER></TD>
 +
                        <TD><CENTER>1790 m</CENTER></TD>
 +
                    </TR>
 +
                    <TR><TD><CENTER>zeta</CENTER></TD>
 +
                        <TD><CENTER>1310 m</CENTER></TD>
 +
                    </TR>
 +
            </TABLE>
 +
    </blockquote>
 +
 +
<p>As I stated recently there is need for modern determinations/confirmations of peak
 +
        [../../../LPOD-2004-02-04.htm heights], which will require figuring our peak
 +
        [../../../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 class="story" align="left"><i>Originally posted March 15, 2004 </i></p>
 +
            <p class="story" align="left"><b>Related Links:</b><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>
 +
            <p class"story"><b>Tomorrow's LPOD:</b> Pitatus</p>
 +
              <p><img src="../../../MainPage/spacer.gif" width="640" height="1"></p></td>
 +
        </tr>
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      </table>
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      <hr width="640" align="center">
 +
 
 +
      <p align="center" class="main_titles"><b>Author & Editor:</b><br>
 +
          [mailto:chuck@observingthesky.org Charles A. Wood]</p>
 +
      <p align="center" class="main_titles"><b>Technical Consultant:</b><br>
 +
          [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p>
 +
      <p align="center" class="main_titles"><b>[mailto:webmaster@entropysponge.com Contact Webmaster]</b></p>
 +
      <p align="center" class="main_titles"><b>A service of:</b><br>
 +
          <a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a></p>
 +
      <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br>
 +
          <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>
 +
<p>&nbsp;</p>
  
  

Revision as of 15:40, 4 January 2015

Peaks of Plato

Peaks of Plato

June 10, 2004

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Image Credit: <A class="one" HREF="mailto:starman2@flash.net">Wes Higgins</A>

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 [../../../LPOD-2004-01-16.htm 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 [../../../LPOD-2004-02-04.htm heights], which will require figuring our peak [../../../LPOD-2004-02-04.htm 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.

Originally posted March 15, 2004

Related Links:
Images by Wes Higgins
Plato Gamma Shadow

Tomorrow's LPOD: Pitatus

<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>

 


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