Difference between revisions of "April 25, 2005"
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=A Chain of Mystery= | =A Chain of Mystery= | ||
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| − | + | <td width="50%"><h2><nobr>A Chain of Mystery</nobr></h2></td> | |
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<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"> | |
| − | + | <img src="archive/2005/04/images/LPOD-2005-04-25.jpeg" border="0"> | |
| − | + | </div></td> | |
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<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:paololazzarotti@astromeccanica.it Paolo Lazzarotti]</p> | |
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| − | + | </table> | |
<br> | <br> | ||
<table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | <table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | ||
| − | + | <p align="center"><b>A Chain of Mystery</b></p> | |
| − | + | <p align="left">Astronomers have apparently failed to notice that the Moon is getting closer to the earth. That is a possible conclusion, based upon the continually improving ability of amateurs to image delicate features previously at or beyond capabilities of even the largest observatory telescopes. Consider the Triesnecker Rilles, the rille on the floor of the Alpine Valley, and the Davy crater chain - all are well known lunar features that used to be very difficult to observe or image. And now, as Paolos impressive image of the Davy chain demonstrates, amateurs are acquiring images of near-spacecraft quality. I explained the probable origin of the Davy chain in two earlier LPODs - [http://www.lpod.org/archive/2004/01/LPOD-2004-01-27.htm Jan 27, 04] and [http://www.lpod.org/LPOD-2004-07-14.htm Jul 14, 04] - as a rat-a-tat-tat of near simultaneous impacts of fragments from a disintegrated comet. But you can see other things in this image too. Note the large, sharp crater (Davy G) at the right end of the chain - it isnt related to the chain craters but makes it easy to find an inconspicuous crater. Just left of G there is a ruined crater that is a little larger than 35 km Davy at the bottom left. This ruin has been draped by ejecta from the Imbrium basin and only a vague rim and shallow depression remain. | |
</p> | </p> | ||
| − | + | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | |
<p align="left"><p><b>Technical Details:</b><br> | <p align="left"><p><b>Technical Details:</b><br> | ||
19 March 2005. Planewton DL-252 telescope + Lumenera LU075 M camera + Edmund Optics R+IR filter; 300 of 4300 frames.</p> | 19 March 2005. Planewton DL-252 telescope + Lumenera LU075 M camera + Edmund Optics R+IR filter; 300 of 4300 frames.</p> | ||
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Rukl Plate 43 | Rukl Plate 43 | ||
<p align="left"><b>Tomorrow's LPOD: </b> Unknown right now!</p> | <p align="left"><b>Tomorrow's LPOD: </b> Unknown right now!</p> | ||
| − | + | </tr> | |
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</table> | </table> | ||
<br> | <br> | ||
<table width="100%" border="0" cellspacing="2" cellpadding="4"> | <table width="100%" border="0" cellspacing="2" cellpadding="4"> | ||
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| − | + | <td><hr></td> | |
| − | + | </tr> | |
| − | + | <tr><td> | |
| − | + | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | |
| − | + | [mailto:tychocrater@yahoo.com 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>Contact Translator:</b><br> | |
| − | + | [mailto:pablolonnie@yahoo.com.mx" class="one Pablo Lonnie Pacheco Railey] (Es)<br> | |
| − | + | [mailto:chlegrand@free.fr" class="one Christian Legrand] (Fr)</p> | |
| − | + | <p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | |
| − | + | <p align="center" class="main_titles"><b>A service of:</b><br> | |
| − | + | [http://www.observingthesky.org/" class="one ObservingTheSky.Org]</p> | |
| − | + | <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | |
| − | + | [http://antwrp.gsfc.nasa.gov/apod/astropix.html" class="one Astronomy] | [http://www.msss.com/" class="one Mars] | [http://epod.usra.edu/" class="one Earth]</p> | |
| − | + | </td></tr> | |
</table> | </table> | ||
<p> </p> | <p> </p> | ||
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===COMMENTS?=== | ===COMMENTS?=== | ||
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | ||
Revision as of 17:31, 4 January 2015
A Chain of Mystery
<nobr>A Chain of Mystery</nobr> |
<img src="archive/2005/04/images/LPOD-2005-04-25.jpeg" border="0"> |
Image Credit: Paolo Lazzarotti
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A Chain of Mystery Astronomers have apparently failed to notice that the Moon is getting closer to the earth. That is a possible conclusion, based upon the continually improving ability of amateurs to image delicate features previously at or beyond capabilities of even the largest observatory telescopes. Consider the Triesnecker Rilles, the rille on the floor of the Alpine Valley, and the Davy crater chain - all are well known lunar features that used to be very difficult to observe or image. And now, as Paolos impressive image of the Davy chain demonstrates, amateurs are acquiring images of near-spacecraft quality. I explained the probable origin of the Davy chain in two earlier LPODs - Jan 27, 04 and Jul 14, 04 - as a rat-a-tat-tat of near simultaneous impacts of fragments from a disintegrated comet. But you can see other things in this image too. Note the large, sharp crater (Davy G) at the right end of the chain - it isnt related to the chain craters but makes it easy to find an inconspicuous crater. Just left of G there is a ruined crater that is a little larger than 35 km Davy at the bottom left. This ruin has been draped by ejecta from the Imbrium basin and only a vague rim and shallow depression remain. Technical Details: Related Links: Tomorrow's LPOD: Unknown right now! |
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Author & Editor: Technical Consultant: Contact Translator: A service of: Visit these other PODs: |
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
