Difference between revisions of "March 4, 2004"
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− | <td><div align="center | + | <td><div align="center"><p>Image Credit: NASA Chart LM 77</div></td> |
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<p class="story" align="center"><b>Ptolemaeus Peak Heights </b></p> | <p class="story" align="center"><b>Ptolemaeus Peak Heights </b></p> | ||
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− | Lunar observers, long impressed by lengthy shadows of ["LPOD-2004-03-03.htm" peaks] | + | Lunar observers, long impressed by lengthy shadows of ["LPOD-2004-03-03.htm" peaks]</p></div></td> |
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<TD><CENTER>LM 77/CAW</CENTER></TD> | <TD><CENTER>LM 77/CAW</CENTER></TD> | ||
<TD><CENTER>Neison</CENTER></TD> | <TD><CENTER>Neison</CENTER></TD> |
Revision as of 15:42, 18 January 2015
Ptolemaeus Peak Heights
Image Credit: NASA Chart LM 77 |
Ptolemaeus Peak Heights Lunar observers, long impressed by lengthy shadows of ["LPOD-2004-03-03.htm" peaks] |
W&M |
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Comparing peak heights I determined using the LM 77 chart with values reported by Neison in 1876 and Schmidt in
1878 shows a systematic under-estimation of Neison's values. It is perplexing that his values are as much as 50%
less than the modern values; Schmidt's two heights are 500 m too high and 500 m too low. However, in Wilkins &
Moore's 1955 The Moon, the only height given is eta at 9000 ft which equals nearly exactly the modern value!
Someone needs to write a program that will allow amateurs to routinely measure heights from their own ccd images.
Related Links:
Ptolemy - the Man
Height of Lunar Mountains
Identification of suspect features in Ptolemaeus crater (domes?)
Tomorrow's LPOD: What's All The Excitement About Mars?
Author & Editor: Technical Consultant: A service of: |
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