Difference between revisions of "Limb"
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=Limb= | =Limb= | ||
(glossary entry)<br /> <div id="toc"> | (glossary entry)<br /> <div id="toc"> | ||
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==Description== | ==Description== | ||
| − | The outer limit of the Moon's surface potentially observable from a given site. If the Moon were uniformly illuminated, the '''limb''' would form a complete circle, but a bumpy one (due to the topography). In practice, a substantial part of the '''limb''' (about half) is usually in shadow ("beyond" the [[terminator|terminator]]), and hence not readily observable. Nonethless the presence of the '''limb''' at these locations is made apparent when the Moon moves over ("occults") a more distant celestial object. <span class="membersnap">- | + | The outer limit of the Moon's surface potentially observable from a given site. If the Moon were uniformly illuminated, the '''limb''' would form a complete circle, but a bumpy one (due to the topography). In practice, a substantial part of the '''limb''' (about half) is usually in shadow ("beyond" the [[terminator|terminator]]), and hence not readily observable. Nonethless the presence of the '''limb''' at these locations is made apparent when the Moon moves over ("occults") a more distant celestial object. <span class="membersnap">- JimMosher</span><br /> <br /> |
==Additional Information== | ==Additional Information== | ||
| − | * See also: [[Saber%27s%20Beads|Saber's Beads]] (a curious optical phenomenon related to the very young and extremely thin moon's crescent, or the very old (immediately after and/or before New Moon). <span class="membersnap">- | + | * See also: [[Saber%27s%20Beads|Saber's Beads]] (a curious optical phenomenon related to the very young and extremely thin moon's crescent, or the very old (immediately after and/or before New Moon). <span class="membersnap">- DannyCaes <small>Feb 12, 2008</small></span> |
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==LPOD Articles== | ==LPOD Articles== | ||
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[http://lpod.wikispaces.com/June%2016%2C%202009 Out on a Gaussian Limb] (the telescopic visibility of farside crater [[Joliot|Joliot]] during favourable libration).<br /> Enhanced LPOD [http://lpod.wikispaces.com/January%205%2C%202014 Out on a Gaussian Limb].<br /> <br /> | [http://lpod.wikispaces.com/June%2016%2C%202009 Out on a Gaussian Limb] (the telescopic visibility of farside crater [[Joliot|Joliot]] during favourable libration).<br /> Enhanced LPOD [http://lpod.wikispaces.com/January%205%2C%202014 Out on a Gaussian Limb].<br /> <br /> | ||
===The Mare Marginis region=== | ===The Mare Marginis region=== | ||
| − | [http://lpod.wikispaces.com/June%2017%2C%202009 Beyond the Cat's Smile] ("Lacus Risus Felis" and [[Mare%20Marginis|Mare Marginis]] during favourable libration). The unknown "crater" is just a portion of highland inmediately east of '''Dreyer''' ; '''Dreyer C''' sits on top of it '''<span class="membersnap">- | + | [http://lpod.wikispaces.com/June%2017%2C%202009 Beyond the Cat's Smile] ("Lacus Risus Felis" and [[Mare%20Marginis|Mare Marginis]] during favourable libration). The unknown "crater" is just a portion of highland inmediately east of '''Dreyer''' ; '''Dreyer C''' sits on top of it '''<span class="membersnap">- Nunki <small>May 18, 2011</small></span>'''<br /> <br /> |
===The Mare Smythii region=== | ===The Mare Smythii region=== | ||
[http://lpod.wikispaces.com/November%203%2C%202008 What's New?] ([[Mare%20Smythii|Mare Smythii]] during favourable libration).<br /> [http://lpod.wikispaces.com/February%2025%2C%202008 Out on a Limb] (the [[Mare%20Smythii|Mare Smythii]] region during favourable libration, local sunset terminator).<br /> [http://www2.lpod.org/wiki/January_13,_2007 Deep, Young and Ashy] (the [[Mare%20Smythii|Mare Smythii]] region during favourable libration, local sunset terminator).<br /> <br /> | [http://lpod.wikispaces.com/November%203%2C%202008 What's New?] ([[Mare%20Smythii|Mare Smythii]] during favourable libration).<br /> [http://lpod.wikispaces.com/February%2025%2C%202008 Out on a Limb] (the [[Mare%20Smythii|Mare Smythii]] region during favourable libration, local sunset terminator).<br /> [http://www2.lpod.org/wiki/January_13,_2007 Deep, Young and Ashy] (the [[Mare%20Smythii|Mare Smythii]] region during favourable libration, local sunset terminator).<br /> <br /> | ||
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[http://www2.lpod.org/wiki/February_2,_2007 The Edge of a Bull's Eye] ([[Mare%20Orientale|Mare Orientale]] during favourable libration, sunrise terminator, slightly before Full Moon).<br /> [http://lpod.wikispaces.com/May%2030%2C%202009 Textured Contrasts] ([[Mare%20Orientale|Mare Orientale]] during favourable libration).<br /> [http://lpod.wikispaces.com/July%202%2C%202008 Inside Orientale] (the [[Mare%20Orientale|Mare Orientale]] region during favourable libration).<br /> [http://lpod.wikispaces.com/June%204%2C%202008 A Ring on Edge] ([[Mare%20Orientale|Mare Orientale]] and ''[[Mare%20Pacificus|Mare Pacificus]]'' during favourable libration).<br /> [http://lpod.wikispaces.com/September%2018%2C%202008 Overlooked] (the [[Mare%20Orientale|Mare Orientale]] region during favourable libration, local sunrise).<br /> [http://lpod.wikispaces.com/August%208%2C%202010 Leaks] (the Mare Orientale region during favourable libration).<br /> [http://lpod.wikispaces.com/August%2010%2C%202009 Moon Woman] (the [[Mare%20Orientale|Mare Orientale]] region and Carle Pieters).<br /> <br /> | [http://www2.lpod.org/wiki/February_2,_2007 The Edge of a Bull's Eye] ([[Mare%20Orientale|Mare Orientale]] during favourable libration, sunrise terminator, slightly before Full Moon).<br /> [http://lpod.wikispaces.com/May%2030%2C%202009 Textured Contrasts] ([[Mare%20Orientale|Mare Orientale]] during favourable libration).<br /> [http://lpod.wikispaces.com/July%202%2C%202008 Inside Orientale] (the [[Mare%20Orientale|Mare Orientale]] region during favourable libration).<br /> [http://lpod.wikispaces.com/June%204%2C%202008 A Ring on Edge] ([[Mare%20Orientale|Mare Orientale]] and ''[[Mare%20Pacificus|Mare Pacificus]]'' during favourable libration).<br /> [http://lpod.wikispaces.com/September%2018%2C%202008 Overlooked] (the [[Mare%20Orientale|Mare Orientale]] region during favourable libration, local sunrise).<br /> [http://lpod.wikispaces.com/August%208%2C%202010 Leaks] (the Mare Orientale region during favourable libration).<br /> [http://lpod.wikispaces.com/August%2010%2C%202009 Moon Woman] (the [[Mare%20Orientale|Mare Orientale]] region and Carle Pieters).<br /> <br /> | ||
===The Hedin and Pierazzo region=== | ===The Hedin and Pierazzo region=== | ||
| − | [http://www2.lpod.org/wiki/December_12,_2007 Not the Dark Side] (the extremely beautiful ray crater [http://the-moon.us/wiki/Pierazzo Pierazzo] at 3°10' North/ 100° West, near farside crater [[Lents|Lents]]. This ray crater is perhaps (?) observable during '''VERY''' favourable libration. It is located "behind" [[Hedin|Hedin]]). See also LAC 72 in B.Bussey's and P.Spudis's ''[[Clementine%20Atlas|Clementine Atlas]]''.<br /> <u>Reply</u>: yes, Pierazzo is observable; check this [http://lpod.wikispaces.com/October%2024%2C%202010 LPOD], the ray crater is visible almost at the limb, following the line that joins southern rims of Kepler and Reiner (see also discussion page) <span class="membersnap">- | + | [http://www2.lpod.org/wiki/December_12,_2007 Not the Dark Side] (the extremely beautiful ray crater [http://the-moon.us/wiki/Pierazzo Pierazzo] at 3°10' North/ 100° West, near farside crater [[Lents|Lents]]. This ray crater is perhaps (?) observable during '''VERY''' favourable libration. It is located "behind" [[Hedin|Hedin]]). See also LAC 72 in B.Bussey's and P.Spudis's ''[[Clementine%20Atlas|Clementine Atlas]]''.<br /> <u>Reply</u>: yes, Pierazzo is observable; check this [http://lpod.wikispaces.com/October%2024%2C%202010 LPOD], the ray crater is visible almost at the limb, following the line that joins southern rims of Kepler and Reiner (see also discussion page) <span class="membersnap">- Nunki <small>May 29, 2011</small></span><br /> [http://lpod.wikispaces.com/April%2026%2C%202009 Leaks] (the dark-halo crater at 9° North/ 90° West, near farside crater [[Sundman|Sundman]]. This dark-halo crater is perhaps observable during favourable libration). See also LAC 55 and LAC 72 in B.Bussey's and P.Spudis's ''[[Clementine%20Atlas|Clementine Atlas]]''.<br /> <br /> |
===The Von Braun region=== | ===The Von Braun region=== | ||
[http://lpod.wikispaces.com/July%2014%2C%202008 Sheet 8] (the [[Von%20Braun|Von Braun]] region and surroundings during favourable libration).<br /> <br /> | [http://lpod.wikispaces.com/July%2014%2C%202008 Sheet 8] (the [[Von%20Braun|Von Braun]] region and surroundings during favourable libration).<br /> <br /> | ||
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[http://www2.lpod.org/wiki/July_13,_2006 Lonesome Limb Landmarks] ([[R%C3%B6ntgen|Röntgen]]/ [[Brianchon|Brianchon]] during favourable libration).<br /> [http://lpod.wikispaces.com/October%2031%2C%202008 Sub-Polar Marker] (the moon's north-northwestern limb).<br /> [http://lpod.wikispaces.com/April%2021%2C%202008 A Forgotten Corner] (the moon's north-northwestern limb).<br /> <br /> | [http://www2.lpod.org/wiki/July_13,_2006 Lonesome Limb Landmarks] ([[R%C3%B6ntgen|Röntgen]]/ [[Brianchon|Brianchon]] during favourable libration).<br /> [http://lpod.wikispaces.com/October%2031%2C%202008 Sub-Polar Marker] (the moon's north-northwestern limb).<br /> [http://lpod.wikispaces.com/April%2021%2C%202008 A Forgotten Corner] (the moon's north-northwestern limb).<br /> <br /> | ||
===The North pole region=== | ===The North pole region=== | ||
| − | ''(the north-northwestern limb region)''<br /> [http://www2.lpod.org/wiki/January_3,_2007 A Mystery Crater] ([[Hermite|Hermite]] and [[Lovelace|Lovelace]] during favourable libration).The bright rim crater identified as '''Lovelace''' is actually '''[[Rozhdestvenskiy|Rozhdestvenskiy]] K'''.<span class="membersnap">- | + | ''(the north-northwestern limb region)''<br /> [http://www2.lpod.org/wiki/January_3,_2007 A Mystery Crater] ([[Hermite|Hermite]] and [[Lovelace|Lovelace]] during favourable libration).The bright rim crater identified as '''Lovelace''' is actually '''[[Rozhdestvenskiy|Rozhdestvenskiy]] K'''.<span class="membersnap">- Nunki <small>May 18, 2011</small></span><br /> [http://www2.lpod.org/wiki/March_3,_2007 A New View of the Limb] (the [[north%20pole|north pole]] region silhouetted against the sun).<br /> [http://lpod.wikispaces.com/January%2010%2C%202010 Good Librations] ([[Hermite|Hermite]] during favourable libration).<br /> '''- Peter Lloyd's mountain''' (87'''.'''8 degrees north, 150 degrees west, on the rim of '''Rozhdestvenskiy'''). Mentioned by Peter Lloyd in Chuck Taylor's LUNAR OBSERVING group.<br /> <br /> |
===The whole moon's limb=== | ===The whole moon's limb=== | ||
''([[Full%20Moon|Full Moon]], or only "half" of it (Waxing Crescent/ First Quarter/ Waxing Gibbous/ Waning Gibbous/ Last Quarter/ Waning Crescent)''<br /> [http://www2.lpod.org/wiki/April_21,_2007 Repackaging the Moon] (the Waxing Crescent Moon's limb).<br /> <br /> <br /> | ''([[Full%20Moon|Full Moon]], or only "half" of it (Waxing Crescent/ First Quarter/ Waxing Gibbous/ Waning Gibbous/ Last Quarter/ Waning Crescent)''<br /> [http://www2.lpod.org/wiki/April_21,_2007 Repackaging the Moon] (the Waxing Crescent Moon's limb).<br /> <br /> <br /> | ||
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All books and atlases about the moon.<br /> <br /> <br /> | All books and atlases about the moon.<br /> <br /> <br /> | ||
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Latest revision as of 20:21, 16 April 2018
Contents
- 1 Limb
- 1.1 Description
- 1.2 Additional Information
- 1.3 LPOD Articles
- 1.3.1 The North pole region
- 1.3.2 The Mare Humboldtianum region
- 1.3.3 The Gauss region
- 1.3.4 The Joliot region
- 1.3.5 The Mare Marginis region
- 1.3.6 The Mare Smythii region
- 1.3.7 The Kästner region
- 1.3.8 The Humboldt region
- 1.3.9 The southeastern limb region
- 1.3.10 The Jenner region
- 1.3.11 The Lyot region
- 1.3.12 The Southpole region
- 1.3.13 The Drygalski region
- 1.3.14 The Bailly region
- 1.3.15 The Hausen region
- 1.3.16 The Mare Orientale region
- 1.3.17 The Hedin and Pierazzo region
- 1.3.18 The Von Braun region
- 1.3.19 The northwestern limb region
- 1.3.20 The North pole region
- 1.3.21 The whole moon's limb
- 2 MISCELLANY pages
- 3 Bibliography
Limb
(glossary entry)Description
The outer limit of the Moon's surface potentially observable from a given site. If the Moon were uniformly illuminated, the limb would form a complete circle, but a bumpy one (due to the topography). In practice, a substantial part of the limb (about half) is usually in shadow ("beyond" the terminator), and hence not readily observable. Nonethless the presence of the limb at these locations is made apparent when the Moon moves over ("occults") a more distant celestial object. - JimMosher
Additional Information
- See also: Saber's Beads (a curious optical phenomenon related to the very young and extremely thin moon's crescent, or the very old (immediately after and/or before New Moon). - DannyCaes Feb 12, 2008
LPOD Articles
(mostly photographs and drawings made during favourable libration)
- This "around the Moon's orb" list is an overview of Limb/ Librations-related LPODs, arranged in a "clockwise" fashion; running from the moon's North pole to the North-Eastern limb, the Eastern limb, the South-Eastern limb, the South pole, the South-Western limb, the Western limb, the North-Western limb, and finally to the North pole again.
- List compiled by Danny Caes.
The North pole region
(the north-northeastern limb region)
Beyond North (the north pole region during favourable libration).
Profile in Confusion (Cusanus and Petermann, sunset terminator).
Over the Pole (libration effects at the moon's north pole).
The Mare Humboldtianum region
Extreme limb (Mare Humboldtianum during favourable libration, waxing crescent moon).
Edge World (the Hayn-Bel'kovich-Mare Humboldtianum region during favourable libration).
A New Mare to Study (the Mare Humboldtianum region during favourable libration).
Zoroaster (the Mare Humboldtianum region during favourable libration, local sunset).
Peaking over the Limb (the telescopic visibility of the central peak of farside crater Compton during favourable libration).
Almost Dry (Mare Humboldtianum during favourable libration).
The Gauss region
Gaussian Blur (Gauss during local sunset).
The Joliot region
Out on a Gaussian Limb (the telescopic visibility of farside crater Joliot during favourable libration).
Enhanced LPOD Out on a Gaussian Limb.
The Mare Marginis region
Beyond the Cat's Smile ("Lacus Risus Felis" and Mare Marginis during favourable libration). The unknown "crater" is just a portion of highland inmediately east of Dreyer ; Dreyer C sits on top of it - Nunki May 18, 2011
The Mare Smythii region
What's New? (Mare Smythii during favourable libration).
Out on a Limb (the Mare Smythii region during favourable libration, local sunset terminator).
Deep, Young and Ashy (the Mare Smythii region during favourable libration, local sunset terminator).
The Kästner region
Nomenclature Zoo (the Kästner region from Banachiewicz to Gibbs, during local sunset).
The Humboldt region
Petavian View (Humboldt and limb during favourable libration).
Magnificent Side View (Humboldt and limb during favourable libration).
Howard's Atlas (the Humboldt region and limb during favourable libration).
On the Limb again (the Humboldt region during favourable libration).
The southeastern limb region
Convergence (the moon's southeastern limb).
Ring Eclipse (Saturn partially occulted by the moon's southeastern limb).
The Jenner region
Way Beyond the Limb (the Jenner region during favourable libration).
The Lyot region
A Dome on the Limb (Lyot during favourable libration, local sunset).
The Southpole region
Polar Classic (the south pole region, drawings by Ewen A. Whitaker).
Superb Response (the Boussingault-Helmholtz-Neumayer region and limb during favourable libration).
No Z (alphabetically arranged map of the moon's south pole region, Hi-Res radar view).
Loftiest Peaks? (the peaks near the moon's south pole, telescopic drawing by Phil Morgan).
Beyond the Polar Explorers (the south pole region during favourable libration).
What's in a Name (the south pole region during favourable libration).
On Top of the World (the south pole region during favourable libration).
Glistening (the south pole region and Clavius during local sunset).
The Drygalski region
A Gift for the Holiday (Drygalski during favourable libration).
Edging along the Limb (Drygalski during favourable libration).
More Limb Peaks (the Drygalski region during favourable libration).
Limb Magic (the Bailly-Drygalski sector during favourable libration).
Polar Triptych (the Drygalski region and environs during favourable libration).
The Bailly region
Especially Worthy of Scrutiny (the Bailly region during favourable libration).
Red & Blue on the Limb (an anaglyph of the Bailly-Hausen region, made during favourable libration).
The Hausen region
A bigger Copernicus (Hausen during very favourable libration).
Copernicus on the Limb (Hausen during very favourable libration).
The Mare Orientale region
The Edge of a Bull's Eye (Mare Orientale during favourable libration, sunrise terminator, slightly before Full Moon).
Textured Contrasts (Mare Orientale during favourable libration).
Inside Orientale (the Mare Orientale region during favourable libration).
A Ring on Edge (Mare Orientale and Mare Pacificus during favourable libration).
Overlooked (the Mare Orientale region during favourable libration, local sunrise).
Leaks (the Mare Orientale region during favourable libration).
Moon Woman (the Mare Orientale region and Carle Pieters).
The Hedin and Pierazzo region
Not the Dark Side (the extremely beautiful ray crater Pierazzo at 3°10' North/ 100° West, near farside crater Lents. This ray crater is perhaps (?) observable during VERY favourable libration. It is located "behind" Hedin). See also LAC 72 in B.Bussey's and P.Spudis's Clementine Atlas.
Reply: yes, Pierazzo is observable; check this LPOD, the ray crater is visible almost at the limb, following the line that joins southern rims of Kepler and Reiner (see also discussion page) - Nunki May 29, 2011
Leaks (the dark-halo crater at 9° North/ 90° West, near farside crater Sundman. This dark-halo crater is perhaps observable during favourable libration). See also LAC 55 and LAC 72 in B.Bussey's and P.Spudis's Clementine Atlas.
The Von Braun region
Sheet 8 (the Von Braun region and surroundings during favourable libration).
The northwestern limb region
Lonesome Limb Landmarks (Röntgen/ Brianchon during favourable libration).
Sub-Polar Marker (the moon's north-northwestern limb).
A Forgotten Corner (the moon's north-northwestern limb).
The North pole region
(the north-northwestern limb region)
A Mystery Crater (Hermite and Lovelace during favourable libration).The bright rim crater identified as Lovelace is actually Rozhdestvenskiy K.- Nunki May 18, 2011
A New View of the Limb (the north pole region silhouetted against the sun).
Good Librations (Hermite during favourable libration).
- Peter Lloyd's mountain (87.8 degrees north, 150 degrees west, on the rim of Rozhdestvenskiy). Mentioned by Peter Lloyd in Chuck Taylor's LUNAR OBSERVING group.
The whole moon's limb
(Full Moon, or only "half" of it (Waxing Crescent/ First Quarter/ Waxing Gibbous/ Waning Gibbous/ Last Quarter/ Waning Crescent)
Repackaging the Moon (the Waxing Crescent Moon's limb).
MISCELLANY pages
John Moore created (and added) interesting looks at (and investigations of) several of the Moon's limb regions in his MISCELLANY pages (an appendix to the daily LPOD's):
Miscellany 1
Miscellany 2
Miscellany 3
Bibliography
All books and atlases about the moon.
