Difference between revisions of "November 16, 2004"
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=LTOs Are Here!= | =LTOs Are Here!= | ||
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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"> | ||
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| − | + | <td width="50%"><h2><nobr>LTOs Are Here!</nobr></h2></td> | |
| − | + | </tr> | |
</table> | </table> | ||
<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/2004/11/images/LPOD-2004-11-16.jpeg" border="0"> | |
| − | + | </div></td> | |
| − | + | </tr> | |
</table> | </table> | ||
<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: [http://www.lpi.usra.edu/research/lunar_atlases/ Lunar & Planetary Institute ]</p> | |
| − | + | </div></td> | |
| − | + | </tr> | |
| − | + | </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>LTOs Are Here!</b></p> | |
| − | + | <p align="left">Once [http://www.lpod.org/archive/2004/06/LPOD-2004-06-28.htm again], quietly and without fanfare, the Lunar & Planetary Institute has delivered a magnificent collection of rare lunar maps for our daily use. The [http://www.lpod.org/archive/2004/03/LPOD-2004-03-27.htm Lunar Topographic Orthophotomaps] - the absolutely best lunar maps ever map - are 1:250,000 scale Apollo Metric photos overprinted with accurate topographic contours at 100 m vertical intervals. LPI has released digitized versions of [http://www.lpi.usra.edu/research/mapcatalog/LTO/index.shtml 215 LTOs] at 4 resolutions: a browse image; a 72 dpi, 2.7 MB image; a 150 dpi, 10 MB image; and a high res image that is so big you have to request LPI puts it on a ftp server for you. I browsed through many images (and already downloaded 3 of the 150 dpi ones - I need that res to read all the contours) to remind myself of what they show. At the top left corner of the index map shown above is a small piece of 41-A4 map of the Beer and Feuille area southwest of Archimedes that gives a degraded view of the large scale and contour density. As the coverage map shows, only the areas under the Apollo 15, 16 and 17 flight paths had stereo coverage allowing topography to be derived by photogrammetry. But this area includes many interesting features, including the rugged dome [http://www.lpod.org/LPOD-2004-09-25.htm Cauchy Tau], which is seen to be 342 m high, quite a bit taller than the previous best estimate of 149 m derived from the less accurate photometric method. Most of these LTO maps were published in 1974, so 30 years later, enjoy them and thank LPI for their tremendous effort in digitizing and placing these treasures online!</p> | |
| − | + | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | |
<p align="left"><p align="left"><b>Tomorrow's LPOD: </b> A Glorious Serpentine Ridge</p> | <p align="left"><p align="left"><b>Tomorrow's LPOD: </b> A Glorious Serpentine Ridge</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 18:27, 4 January 2015
LTOs Are Here!
<nobr>LTOs Are Here!</nobr> |
<img src="archive/2004/11/images/LPOD-2004-11-16.jpeg" border="0"> |
Image Credit: Lunar & Planetary Institute
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|
LTOs Are Here! Once again, quietly and without fanfare, the Lunar & Planetary Institute has delivered a magnificent collection of rare lunar maps for our daily use. The Lunar Topographic Orthophotomaps - the absolutely best lunar maps ever map - are 1:250,000 scale Apollo Metric photos overprinted with accurate topographic contours at 100 m vertical intervals. LPI has released digitized versions of 215 LTOs at 4 resolutions: a browse image; a 72 dpi, 2.7 MB image; a 150 dpi, 10 MB image; and a high res image that is so big you have to request LPI puts it on a ftp server for you. I browsed through many images (and already downloaded 3 of the 150 dpi ones - I need that res to read all the contours) to remind myself of what they show. At the top left corner of the index map shown above is a small piece of 41-A4 map of the Beer and Feuille area southwest of Archimedes that gives a degraded view of the large scale and contour density. As the coverage map shows, only the areas under the Apollo 15, 16 and 17 flight paths had stereo coverage allowing topography to be derived by photogrammetry. But this area includes many interesting features, including the rugged dome Cauchy Tau, which is seen to be 342 m high, quite a bit taller than the previous best estimate of 149 m derived from the less accurate photometric method. Most of these LTO maps were published in 1974, so 30 years later, enjoy them and thank LPI for their tremendous effort in digitizing and placing these treasures online! Tomorrow's LPOD: A Glorious Serpentine Ridge |
|
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.
