Difference between revisions of "De Morgan"
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<div id="content_view" class="wiki" style="display: block"> | <div id="content_view" class="wiki" style="display: block"> | ||
=De Morgan= | =De Morgan= | ||
| − | Lat: 3.3°N, Long: 14.9°E, Diam: 10 km, Depth: 1.9 km, [ | + | Lat: 3.3°N, Long: 14.9°E, Diam: 10 km, Depth: 1.9 km, [[R%C3%BCkl%2034|Rükl: 34]]<br /> |
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[http://lpod.org/coppermine/displayimage.php?pid=4401&fullsize=1 [[Image:normal_demorgan-large.jpg|external image normal_demorgan-large.jpg]]]<br /> | [http://lpod.org/coppermine/displayimage.php?pid=4401&fullsize=1 [[Image:normal_demorgan-large.jpg|external image normal_demorgan-large.jpg]]]<br /> | ||
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| − | '''Left:''' ''[http://lpod.org/coppermine/displayimage.php?pos=-2646 Clementine]'' Under high Sun, '''de Morgan''' is lost (the small unbright crater in the middle of the frame) amid the dark rays of [ | + | '''Left:''' ''[http://lpod.org/coppermine/displayimage.php?pos=-2646 Clementine]'' Under high Sun, '''de Morgan''' is lost (the small unbright crater in the middle of the frame) amid the dark rays of [[Dionysius|Dionysius]] and the crisp bright walled [[Cayley|Cayley]], immediately above '''de Morgan'''. '''Middle''': ''[http://lpod.org/coppermine/displayimage.php?pos=-2647 Clementine closeup]'' '''Right:''' ''[http://www.lpi.usra.edu/resources/lunarorbiter/images/preview/4090_h1.jpg Lunar Orbiter LO-4090-H1]'' image from the [http://www.lpi.usra.edu/ Lunar & Planetary Institute].<br /> <br /> <div id="toc"> |
=Table of Contents= | =Table of Contents= | ||
<div style="margin-left: 1em">[#De Morgan De Morgan]</div><div style="margin-left: 2em">[#De Morgan-Images Images]</div><div style="margin-left: 2em">[#De Morgan-Maps Maps]</div><div style="margin-left: 2em">[#De Morgan-Description Description]</div><div style="margin-left: 3em">[#De Morgan-Description-Elger Elger]</div><div style="margin-left: 3em">[#De Morgan-Description-Wikipedia Wikipedia]</div><div style="margin-left: 2em">[#De Morgan-Additional Information Additional Information]</div><div style="margin-left: 2em">[#De Morgan-Nomenclature Nomenclature]</div><div style="margin-left: 2em">[#De Morgan-LPOD Articles LPOD Articles]</div><div style="margin-left: 2em">[#De Morgan-Bibliography Bibliography]</div><div style="margin-left: 2em">[#De Morgan-Augustus de Morgan in the Sourcebook Project (William R. Corliss) Augustus de Morgan in the Sourcebook Project (William R. Corliss)]</div></div> | <div style="margin-left: 1em">[#De Morgan De Morgan]</div><div style="margin-left: 2em">[#De Morgan-Images Images]</div><div style="margin-left: 2em">[#De Morgan-Maps Maps]</div><div style="margin-left: 2em">[#De Morgan-Description Description]</div><div style="margin-left: 3em">[#De Morgan-Description-Elger Elger]</div><div style="margin-left: 3em">[#De Morgan-Description-Wikipedia Wikipedia]</div><div style="margin-left: 2em">[#De Morgan-Additional Information Additional Information]</div><div style="margin-left: 2em">[#De Morgan-Nomenclature Nomenclature]</div><div style="margin-left: 2em">[#De Morgan-LPOD Articles LPOD Articles]</div><div style="margin-left: 2em">[#De Morgan-Bibliography Bibliography]</div><div style="margin-left: 2em">[#De Morgan-Augustus de Morgan in the Sourcebook Project (William R. Corliss) Augustus de Morgan in the Sourcebook Project (William R. Corliss)]</div></div> | ||
==Images== | ==Images== | ||
[http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=De%20Morgan LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?De%20Morgan%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=De%20Morgan Apollo Images]<br /> | [http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=De%20Morgan LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?De%20Morgan%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=De%20Morgan Apollo Images]<br /> | ||
| − | * Although there's nothing in the LPI's search list for orbital Apollo photographs of '''De Morgan''' and nearby craters [ | + | * Although there's nothing in the LPI's search list for orbital Apollo photographs of '''De Morgan''' and nearby craters [[Cayley|Cayley]], [[D%27Arrest|D'Arrest]], and [[Whewell|Whewell]], these craters were captured on several frames of Apollo 16's north-looking metric/mapping ''Fairchild'' camera, such as frame [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-M-0831 AS16-M-0831]. In this frame, '''De Morgan''' and its surrounding craters are visible near the central part of the curved horizon. |
* Research: Danny Caes. | * Research: Danny Caes. | ||
<br /> <br /> | <br /> <br /> | ||
==Maps== | ==Maps== | ||
| − | ''([ | + | ''([[LAC%20zone|LAC zone]] 60D4)'' [http://www.lpi.usra.edu/resources/mapcatalog/LAC/lac60/ LAC map] [http://www.lpi.usra.edu/resources/mapcatalog/usgs/I510/ Geologic map] [http://www.lpi.usra.edu/resources/mapcatalog/LM/lm60/ LM map] [http://www.lpi.usra.edu/resources/mapcatalog/AIC/AIC60D/ AIC map]<br /> <br /> |
==Description== | ==Description== | ||
| − | [ | + | [[Clementine|Clementine]] provides an excellent view of this standard little simple crater. It has steep walls and a flat floor with two tiny hills as central peaks. '''de Morgan''''s walls are not nearly as bright as those of nearby [[Cayley|Cayley]], suggesting that the smaller crater is older. This is supported by noting that [[Cayley|Cayley]] truncates one of the dark rays from [[Dionysius|Dionysius]], whereas a piece of the dark ejecta seems to impinge on the western wall of '''de Morgan'''. But two other dark areas occur along the northern wall so perhaps this is just a buried pyroclastic layer - the same one that is the source of [[Dionysius|Dionysius]]' rays. <span class="membersnap">- [http://www.wikispaces.com/user/view/tychocrater [[Image:tychocrater-lg.jpg|16px|tychocrater]]] [http://www.wikispaces.com/user/view/tychocrater tychocrater] <small>Sep 26, 2007</small></span><br /> <br /> |
===Elger=== | ===Elger=== | ||
| − | ''([ | + | ''([[IAU%20Directions|IAU Directions]])'' DE MORGAN.--A brilliant little crater, 4 miles in diameter, on the plain S. of the [[Ariadaeus|Ariadaeus]] cleft.<br /> <br /> |
===Wikipedia=== | ===Wikipedia=== | ||
[http://en.wikipedia.org/wiki/De_Morgan_(crater) De Morgan]<br /> <br /> | [http://en.wikipedia.org/wiki/De_Morgan_(crater) De Morgan]<br /> <br /> | ||
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* IAU page: [http://planetarynames.wr.usgs.gov/Feature/1443 De Morgan] | * IAU page: [http://planetarynames.wr.usgs.gov/Feature/1443 De Morgan] | ||
| − | * Depth data from [ | + | * Depth data from [[Kurt%20Fisher%20crater%20depths|Kurt Fisher database]] |
** Viscardy, 1985: 1.9 km | ** Viscardy, 1985: 1.9 km | ||
<br /> | <br /> | ||
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[http://www2.lpod.org/wiki/December_11,_2006 How Deep is that Hole?]<br /> <br /> | [http://www2.lpod.org/wiki/December_11,_2006 How Deep is that Hole?]<br /> <br /> | ||
==Bibliography== | ==Bibliography== | ||
| − | Harold Hill. ''[ | + | Harold Hill. ''[[A%20Portfolio%20of%20Lunar%20Drawings|A Portfolio of Lunar Drawings]]'', page 5 (the [[Rima%20Ariadaeus|Ariadaeus rille]]).<br /> <br /> |
==Augustus de Morgan in the ''Sourcebook Project'' (William R. Corliss)== | ==Augustus de Morgan in the ''Sourcebook Project'' (William R. Corliss)== | ||
- Page 127 in ''Mysterious Universe, a handbook of astronomical anomalies'' (1979) ''':'''<br /> | - Page 127 in ''Mysterious Universe, a handbook of astronomical anomalies'' (1979) ''':'''<br /> | ||
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<br /> | <br /> | ||
---- | ---- | ||
| − | [ | + | [[Alphabetical%20Index|Named Features]] -- Prev: [[De%20Moraes|De Moraes]] -- Next: [[De%20Roy|De Roy]]<br /> |
---- | ---- | ||
This page has been edited 1 times. The last modification was made by <span class="membersnap">- [http://www.wikispaces.com/user/view/tychocrater [[Image:tychocrater-lg.jpg|16px|tychocrater]]] [http://www.wikispaces.com/user/view/tychocrater tychocrater]</span> on Jun 13, 2009 3:24 pm - ''afx3u3''</div> | This page has been edited 1 times. The last modification was made by <span class="membersnap">- [http://www.wikispaces.com/user/view/tychocrater [[Image:tychocrater-lg.jpg|16px|tychocrater]]] [http://www.wikispaces.com/user/view/tychocrater tychocrater]</span> on Jun 13, 2009 3:24 pm - ''afx3u3''</div> | ||
Revision as of 14:46, 15 April 2018
Contents
De Morgan
Lat: 3.3°N, Long: 14.9°E, Diam: 10 km, Depth: 1.9 km, Rükl: 34
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|
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Table of Contents
[#De Morgan De Morgan]
[#De Morgan-Images Images]
[#De Morgan-Maps Maps]
[#De Morgan-Description Description]
[#De Morgan-Description-Elger Elger]
[#De Morgan-Description-Wikipedia Wikipedia]
[#De Morgan-Additional Information Additional Information]
[#De Morgan-Nomenclature Nomenclature]
[#De Morgan-LPOD Articles LPOD Articles]
[#De Morgan-Bibliography Bibliography]
[#De Morgan-Augustus de Morgan in the Sourcebook Project (William R. Corliss) Augustus de Morgan in the Sourcebook Project (William R. Corliss)]
Images
LPOD Photo Gallery Lunar Orbiter Images Apollo Images
- Although there's nothing in the LPI's search list for orbital Apollo photographs of De Morgan and nearby craters Cayley, D'Arrest, and Whewell, these craters were captured on several frames of Apollo 16's north-looking metric/mapping Fairchild camera, such as frame AS16-M-0831. In this frame, De Morgan and its surrounding craters are visible near the central part of the curved horizon.
- Research: Danny Caes.
Maps
(LAC zone 60D4) LAC map Geologic map LM map AIC map
Description
Clementine provides an excellent view of this standard little simple crater. It has steep walls and a flat floor with two tiny hills as central peaks. de Morgan's walls are not nearly as bright as those of nearby Cayley, suggesting that the smaller crater is older. This is supported by noting that Cayley truncates one of the dark rays from Dionysius, whereas a piece of the dark ejecta seems to impinge on the western wall of de Morgan. But two other dark areas occur along the northern wall so perhaps this is just a buried pyroclastic layer - the same one that is the source of Dionysius' rays. - tychocrater tychocrater Sep 26, 2007
Elger
(IAU Directions) DE MORGAN.--A brilliant little crater, 4 miles in diameter, on the plain S. of the Ariadaeus cleft.
Wikipedia
Additional Information
- IAU page: De Morgan
- Depth data from Kurt Fisher database
- Viscardy, 1985: 1.9 km
Nomenclature
- Named for Augustus de Morgan (June 27, 1806 – March 18, 1871), an Indian-born British mathematician and logician. He formulated De Morgan's laws and was the first to introduce the term, and make rigorous the idea of mathematical induction.
LPOD Articles
Bibliography
Harold Hill. A Portfolio of Lunar Drawings, page 5 (the Ariadaeus rille).
Augustus de Morgan in the Sourcebook Project (William R. Corliss)
- Page 127 in Mysterious Universe, a handbook of astronomical anomalies (1979) :
- The Maedler Phenomenon (Richard Baum, Strolling Astronomer, 1978).
Named Features -- Prev: De Moraes -- Next: De Roy
This page has been edited 1 times. The last modification was made by - tychocrater tychocrater on Jun 13, 2009 3:24 pm - afx3u3
