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Topic: Asterism


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In the News (Wed 15 Feb 12)

  
  Names of Months from the Chapter "Siksa", in Hindu Dharma : kamakoti.org:
Vaishaka is connected with the asterism Visakha; it is "Vaikasi" in Tamil.
Since it is the asterism sacred to Mahavisnu the honorific "Tiru" [equivalent of Sri] is prefixed to its name --thus we have "Tiruvonam".
The full moon falls under this asterism or the one near it in the Tamil month Purattasi which name is derived somehow from Prosthapadi.
www.kamakoti.org /hindudharma/part6/chap13.htm   (962 words)

  
  Encyclopedia: Asterism (astronomy)   (Site not responding. Last check: 2007-10-26)
In astronomy, an asterism is a recognized pattern of stars seen in Earth's sky which is neither an official constellation nor a true star cluster.
Asterisms are considered to be distinct from constellations, although the origin of most constellations is also a recognizable pattern of stars.
An asterism might be a part of a constellation, a pattern composed of stars from two or more constellations, or a smaller distinctive pattern of stars which are not physically associated and are therefore not classified as a cluster.
www.nationmaster.com /encyclopedia/Asterism-%28astronomy%29   (676 words)

  
 WHAT IS AN ASTERISM?   (Site not responding. Last check: 2007-10-26)
Asterisms may be contained within a single constellation or consist of stars belonging to different constellations.
The Big and Little Dippers are asterisms within the constellations of Ursus Major and Ursus Minor.
The Summer Triangle and Winter Hexagon are asterisms that include stars from several constellations.
homepage.mac.com /kvmagruder/bcp/aster/general/asterism.htm   (138 words)

  
 * Asterism - (Astronomy): Definition   (Site not responding. Last check: 2007-10-26)
Asterisms are sub- or supersets of constellations which build a constellation itself, or a group of stars, physically related or not.
It is a small asterism, containing only about five stars, viz., one of the 1st magnitude, two of the 2nd, one of the 3rd, and one of the 4th.
An asterism is a star pattern, and is different from a constellation...
www.bestknows.com /astronomy/asterism.html   (855 words)

  
 Markov 1 Asterism in Hercules   (Site not responding. Last check: 2007-10-26)
He also noted that there does not seem to be a pattern for the V and B magnitudes, and because this grouping is quite far away from the plane of the Milky Way, the possibility of it being a physical cluster are reduced.
Archinal suggested the asterism be named “Markov 1” or “Markov J1757.2+2929”, as per the International Astronomical Union’s nomenclature guide lines, and also expressed an interest in including Markov 1 in an upcoming book he is co-authoring (with Steve Hynes of the U.K.) called “Star Clusters”.
The asterism, which is just 0.25-degrees north-west of Xi (92) Hercules, a magnitude 3.7 star, shows ups well on both the Digitized Sky Survey image (Figure 1) and Uranometria 2000.0 (star chart 116) and can be observed during most of the year, except Winter.
www.astrobuysell.com /paul/markov1.htm   (535 words)

  
 Indian Star Names
It thus became convenient to name the month after the background asterism on the full moon night, and these are still the names of the months, even though they are now defined in terms of the position of the sun against the fixed stars (siderial year of 365.256363 days).
This asterism is presided over by aditi and consists of α and β-Geminii, which are called castor and pollux respectively in the west.
The asterism is represented by the pudendum muliebre, and consists of Fl.
tanmoy.tripod.com /naksatra.html   (2397 words)

  
 Asterism
Asterisms are patterns of stars seen in Earth's sky which are not official constellations.
One ancient asterism, Coma Berenices, is now officially a constellation.
A second meaning of asterism is the optical phenomenon displayed by some rubies, sapphires, and other gems of an enhanced reflective area in the shape of a "star" on the surface of a cabochon cut from the stone.
www.ebroadcast.com.au /lookup/encyclopedia/as/Asterism.html   (144 words)

  
 Sapphire - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-26)
The tell-tale sign of synthetic sapphires is the crystalline growth lines which are usually curved due to the pulling during the accelerated crystal growth process.
Although natural sapphires can show an asterism, the shape of the star is usually somewhat irregular and sometimes indistinct.
A manufactured star sapphire called the Linde Star shows a very regularly-shaped and distinct asterism because the formation process is more tightly controlled than the natural version.
www.sevenhills.us /project/wikipedia/index.php/Sapphire   (550 words)

  
 Chapter 2 Practice Questions   (Site not responding. Last check: 2007-10-26)
A) an asterism is a group of stars, whereas a constellation is an area of the sky.
C) an asterism is the formal astronomical listing of a group of stars, whereas a constellation is a popular name for the group of stars usually inherited from ancient sky-watchers.
D) an asterism is a group of stars represented by an easily-recognized object, whereas a constellation is a group of stars represented by some abstract or imaginary figure.
www.snc.edu /physics/takahashi/AstronomyF05/Horizons/Chapter02/Ch02PracticeQ.html   (1083 words)

  
 Quartz Crystal forms, Rockhounding Arkansas
Webster defines asterism as an optical phenomenon of some crystals that exhibit a star-shaped body produced by reflected light or by transmitted light and gives star sapphire and mica as examples.
Now, asterism is not very common in most varieties of quartz, but is sometimes seen in rose quartz.
Asterism is best observed by using a single point light source, like an incandescent bulb or the sun.
rockhoundingar.com /quartz/asterated.html   (504 words)

  
 Mineral Gallery - Pleochroism, Phosphorescence and other light effects
Asterism is a well known light effect in some gemstones.
Asterism, which gets it name from aster the Greek word for star, is responsible for the lovely star sapphires, star rubies, star rose quartz and other gemstones.
Cat's eyes are similar to asterisms and are caused by the same inclusions of minute crystals.
mineral.galleries.com /minerals/property/pleochro.htm   (1012 words)

  
 Asterisms
Asterisms are sub- or supersets of constellations which build a constellation itself, or a group of stars, physically related or not.
It is an open star cluster, which is also called Praesepe or M44 and faintly visible to the naked eye.
Actually this is not a true asterism, but a dark patch on the Milky Way, in the constellation Crux.
www.seds.org /Maps/Const/asterism.html   (594 words)

  
 Markov 1 Asterism in Hercules
He also noted that there does not seem to be a pattern for the V and B magnitudes, and because this grouping is quite far away from the plane of the Milky Way, the possibility of it being a physical cluster are reduced.
Archinal suggested the asterism be named “Markov 1” or “Markov J1757.2+2929”, as per the International Astronomical Union’s nomenclature guide lines, and also expressed an interest in including Markov 1 in an upcoming book he is co-authoring (with Steve Hynes of the U.K.) called “Star Clusters”.
The asterism, which is just 0.25-degrees north-west of Xi (92) Hercules, a magnitude 3.7 star, shows ups well on both the Digitized Sky Survey image (Figure 1) and Uranometria 2000.0 (star chart 116) and can be observed during most of the year, except Winter.
home.ica.net /~pmarkov/markov1.htm   (511 words)

  
 Professional Jeweler Archive: Written in the Stars
Asterism is best seen when a gem is cut as a cabochon.
Asterism is most visible with direct light, such as a fiber-optic light, penlight or other single beam of light, including direct sunlight.
When only small clouds of needles exist, asterism is visible in only a small area and it’s not particularly suitable as a phenomenal gem, if at all.
www.professionaljeweler.com /archives/articles/2001/aug01/0801gg.html   (569 words)

  
 MantraOnNet.com: Asterisms Fasts   (Site not responding. Last check: 2007-10-26)
Such a Vrata should be practised on each night marked by the asterism Hasta for a year, whereby the penitent would be entitled to enjoy al the com- forts of the world.
Likewise by performing the Vrata, which should be practised on the nights or seven Wednes- days, marked by the asterism Vishakha, a man be- comes able to get rid of the baneful influences of planets, and secures their good graces in return.
Similarly by worshipping the Jupiter, the preceptor of the gods, on seven Thursdays marked by the asterism Anuradha, and by breaking his tasts on the nights of each of such seven days, a Vrati derives the same benifit as narrated in the preceding instance.
www.mantraonnet.com /fasts/asterisms-fasts.html   (321 words)

  
 Birds of a Feather   (Site not responding. Last check: 2007-10-26)
These two constellations have bright stars that are two thirds of the Summer Triangle, the asterism that's the sign of summer.
Asterism's are informal constellations that aren't listed with the official 88 constellations.
The constellation outline above is that of the asterism the Northern Cross.
ourworld.compuserve.com /homepages/bmoler/birdsfea.htm   (673 words)

  
 Light - Color Effects in Gemstones - Asterism - Chatoyancy - Silk   (Site not responding. Last check: 2007-10-26)
Asterism is the phenomena commonly known as "star".
The rays of the star form very definate angles, depending on the crystal, as a result of rutile, or other tiny needles are aligned at angles.
Fluorescence in gems is thought to be caused by small metal impurities such as chromium, manganese, cobalt, nickel, molybdate, tungsten and certain uranium compounds.
www.asia-gems.com /gemology/light-color-effects.htm   (485 words)

  
 Asterism on a Green Stone?   (Site not responding. Last check: 2007-10-26)
Asterism in emerald is apparently not unheard of, but I have never seen one or even a picture of one...chatoyancy (cat's eye) is, of course, not common but better known.
Asterism is caused by dense inclusions of tiny, parallel, slender fibers in the mineral which cause the light to reflect a billowy, star-like formation of concentrated light which moves around when the mineral is rotated.
Asterism also occurs now and then in the "rhodolite" pyrope-almandines from Africa and probably other garnet types that have properly-oriented rutile inclusions.
www.pricescope.com /diamonds/x12915.htm   (2826 words)

  
 Asterism - Wikipedia, the free encyclopedia
In astronomy, it refers to a constellation-like group of stars; see asterism (astronomy)
In gemmology, it is an optical phenomenon; see asterism (gemmology)
This is a disambiguation page, a list of pages that otherwise might share the same title.
en.wikipedia.org /wiki/Asterism   (98 words)

  
 Online Etymology Dictionary
O.E. Carles wægn, associated with Charlemagne, originally with the nearby bright star Arcturus (see Arctic), which is linked by folk etymology to L. Arturus "Arthur." The crux of this is the legendary association of Arthur and Charlemagne.
Other names for it are the Plough and the Big Dipper; it is an asterism, not a true constellation [technically, it is a part of Ursa Major].
Dipper, the popular U.S. name for the asterism known in Britain as The Plough or Charles' Wain, is attested from 1842.
www.etymonline.com /index.php?search=dipper&searchmode=phrase   (386 words)

  
 Can You Spot This?
The object, known as Kemple's Cascade, actually is an asterism.
The asterism was named after Canadian astronomer Lucien Kemple by another astronomer, Walter Scott Houston.
To get another good look at this asterism, see Chart 18 in Uranometria 2000, which shows a truer number of stars in it.
www.astronomical.org /astbook/canyou1.htm   (424 words)

  
 Asterism (gemmology)   (Site not responding. Last check: 2007-10-26)
En gemmology, un asterism es un fenómeno óptico exhibido por algunos rubíes, zafiros, y otras gemas de un área reflexiva realzada en la forma de una "estrella" en la superficie de un cabochon cortado de la piedra.
Asterism es causado por las inclusiones densas de las fibras minúsculas, paralelas, delgadas en el mineral que hacen la luz reflejar un billowy, estrella-como la formación de la luz concentrada que se mueve alrededor cuando se rota el mineral.
Algunos especímenes pueden exhibir un asterism mucho más fuerte que otros, y algunos especímenes pueden tener áreas donde no están presentes las inclusiones, dejando los agujeros o las áreas vacías en la estrella.
www.yotor.net /wiki/es/as/Asterism%20%28gemmology%29.htm   (261 words)

  
 Big Dipper
he Big Dipper is one of the most distinctive asterisms in the sky.
Hold your mouse cursor over the image to see the names of the stars that make up the asterism and some of the prominent deep-sky objects nearby.
The familiar and easy to spot bowl and handle of the Big Dipper are composed of bright stars that are visible even from the city.
www.astropix.com /HTML/C_SPRING/BIGDIP.HTM   (447 words)

  
 Messier Road Maps: Central Milky Way--Cousin Ricky's Amateur Astronomy   (Site not responding. Last check: 2007-10-26)
In the Teapot asterism, the west end of the lid.
M8 describes a tall irregular pentagon with stars in and near the teapot asterism.
Identify γ Sct, the southernmost star of the shield's diamond asterism.
cac.uvi.edu /staff/rc3/astro/mroadmap7.html   (642 words)

  
 Planetary Motion Example   (Site not responding. Last check: 2007-10-26)
This is a chart of an asterism within the constellation Leo.
However, as viewed in April of 1997, this asterism of stars is encountering a Marsian invasion.
Of course, we now presume that we have figured it out, showing how Mars, like our own planet, is "wandering" about the sun in an orbital ellipse.
departments.weber.edu /physics/johnston/astro/planets.htm   (227 words)

  
 Software Bisque
The asterisms are included with the latest update to TheSky.
If you have made your own changes, corrections or additions to the Asterisms and Other text file/SDB make sure you backup those changes or they will be lost.
The newer SDB files names Large Asterism Drawings and Large Asterism Labels must be "added" to your existing active list of SDB's (sky databases) using TheSky's Data
www.bisque.com /tom/asterisms/list.asp   (265 words)

  
 SkyEye - Ursa Major
At just over 8 light years distant, Lalande 21185 is one of the closest stars to the Sun, but it is just a little too faint to be seen with the naked eye.
Merak is a member of the asterism called the "Big Dipper" or "Plough." With Dubhe, it is one of the "Pointers to the Pole."
Mizar is a member of the asterism called the "Big Dipper" or "Plough." Its companion in the sky is Alcor.
www.obliquity.com /skyeye/88const/uma.html   (290 words)

  
 Travel, tours, trips, hotels booking in Myanmar (Burma), Asterism Travel Co
Travel, tours, trips, hotels booking in Myanmar (Burma), Asterism Travel Co Asterism Travels & Tours - Myanmar
Asterism Travels & Tours Co., Ltd. provides research and custom design of your travel program, hotels booking, air tickets reservation, other transport arrangements, guide service, river and train travel, eco-tours, nature walk and trekking, hilltribe village home stay, and so on.
At the end of the trip many of our tourists told us the heritage, culture and life, communication with locals, architecture, scenery and being there are the ones they enjoyed very much; and on top of those are our efforts in custom designing the best possible itinerary and attention to details.
www.asterism.info   (278 words)

  
 Ice Balloon Demonstration
It shows the elements for a myth and is identical to the one they could use to guide their research of an existing constellation or asterism.
Explain that they will be creating their own asterism today and writing a myth about it.
I looked both at length (a page has to be a page guys!) and content (does their story go with the asterism they created, is it interesting and memerable, will it help them remember their asterism).
www-personal.umich.edu /~salinay/LessonPlans/Asterisms/Creation.html   (873 words)

  
 Star 18, Pakan's 3
It is a string of 15 stars about magnitude 9 or 10 which together form a mirrored "3".
The asterism stands out well from its surroundings.
Philip S. Harrington describes this asterism in his book "The Deep Sky, an introduction".
www.backyard-astro.com /Logs/star18.html   (122 words)

  
 Phenomena of gemstone such as Adularescence sheen Interference and Diffraction Colors Play of Color Color Change ...
- Asterism (star effect) like the cause of cat's eye effect, if there are three identical chrystallographic directions, as in hexagonal crystals, silk (needlelike inclusion) may present parallel to each of the like directions.
A cabochon cut from a crystal shows a beam of light perpendicular to each parallel set of inclusions.
This triple chatoyancy is called asterism and is best known in star rubies and star sapphires.
www.swdgems.com /phenomena.html   (458 words)

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