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	Celestial mechanics - Wikipedia, the free encyclopedia
		Celestial mechanics is a division of astronomy dealing with the motions and gravitational effects of celestial objects.
		Isaac Newton is credited with introducing the idea that the motion of objects in the heavens, such as planets, the Sun, and the Moon, and the motion of objects on the ground, like cannon balls and falling apples, could be described by the same set of physical laws.
		Celestial motion without additional forces such as thrust of a rocket, is governed by gravitational acceleration of masses due to other masses.
	en.wikipedia.org /wiki/Celestial_mechanics (1133 words)

	Encyclopedia: Celestial objects
		According to the Hertzsprung-Russell diagram, a red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giants.
		In astronomy, a compact star (sometimes called a compact object) is a star that is a white dwarf, a neutron star, a strange star, or a fl hole.
		NGC 6543, the Cats Eye Nebula A planetary nebula is an astronomical object consisting of a glowing shell of gas formed by certain types of stars at the end of their lives.
	www.nationmaster.com /encyclopedia/Celestial-objects (6970 words)

	Voyage 2
		When an object is rising it is to the east of the meridian, and when it is setting, it is to the west of the meridian.
		The daily east to west motion of celestial objects is caused by the Earth’s rotation and is known as diurnal motion.
		Objects that rise in the northeast remain above the horizon for more than 12 hours and those that rise in the southeast are above the horizon for less than 12 hours.
	www.physics.emich.edu /jwooley/chapter2/Chapter2.html (1681 words)

	Motions of the Celestial Bodies
		To locate objects in the sky, we imagine that the earth is surrounded by a large sphere and that all the celestial objects are attached to the inside surface.
		The motions of these objects are due to a combination of the daily rotation of this sphere about the earth and their individual motions along the sphere's surface.
		Objects on the sphere that are above the horizon are visible to you.
	www.sciencemaster.com /space/item/motions.php (879 words)

	Meade Instruments Corporation - Understanding Celestial Movements and Coordinates
		Understanding celestial coordinates: Celestial objects are mapped according to the R.A. and Dec. coordinate system on the "celestial sphere," the imaginary sphere on which all stars appear to be placed.
		Celestial object positions on the Earth's surface are specified by their latitude and longitude.
		With all celestial objects therefore capable of being specified in position by their celestial coordinates of Right Ascension and Declination, the task of finding objects (in particular, faint objects) in the telescope can be simplified.
	www.meade.com /manuals/m4500/celest.html (892 words)

	Lesson Three
		Similarly, the celestial coordinates give us the location of objects on the celestial globe, but they give us no information as to how far away those objects are.
		Celestial objects appear to rise in the East and set in the West due to the Earth's rotation; so, the right ascension coordinates increase to the East.
		Declination is easier because it is similar to latitude on Earth: objects on the celestial equator have a declination of 0 degrees; objects near the celestial north pole have declinations near +90 degrees (south celestial pole, near –90 degrees).
	www.astro.washington.edu /larson/Astro101/LecturesFraknoi/astro101s03.html (2106 words)

	"Amateur Astronomy". Celestial Mechanics Definitions List
		In the northern hemisphere the celestial meridian begins on the northern horizon, passes through the north celestial pole, then overhead the observer (or zenith).
		The celestial meridian defines where celestial objects are reaching their highest point in the sky relative to observer.
		For the purpose of locating celestial objects on the celestial sphere the latter is subject to various coordinate systems.
	stars5.netfirms.com /definitions.htm (2244 words)

	Astrotale - How a catalog of meaningless fixed celestial objects became the premier collection of outstanding celestial ...
		Messier resolved to correct this situation by noting all comet-like objects that didn't move against the background stars of the constellations.
		Of course, the Crab is now known to be a supernovae remnant and one of the most spectacular objects in the sky, it's gas shell expanding at velocities in thousands of miles per second.
		Locating, drawing, and identifying the 108 objects that Messier catalogued is the first benchmark for trained observers proving their mettle with a telescope or binoculars.
	www.wpo.net /astrotales/messier.html (344 words)

	Astronomy Lecture Notes - The Sky and the Celestial Sphere (Site not responding. Last check: 2007-10-09)
		An imaginary sphere surrounding the Earth on which celestial objects appear to be located; thought to really exist in antiquity, today used as tool to identify locations in the sky.
		Celestial Equator, North and South Celestial Poles (Polaris or the North Star); the Ecliptic; Solstices and equinoxes.
		The altitude and azimuth of objects change as the whole sky moves from E to W (Why, is it because stars and planets are moving?), as well as with location on Earth.
	www.olemiss.edu /courses/astr104/Topics/Sky-T.html (591 words)

	Astronomers Discover A New Class Of Objects In Two Nearby Galaxies
		Globular clusters are thought to be the oldest radiant objects in the universe and are found in all types of galaxies, usually in large numbers.
		To confirm these observations, and in particular to rule out the possibility that these were background objects and not part of the galaxy itself, the researchers needed to get spectra of the faint fuzzies.
		Furthermore, when the researchers plotted the velocities of the clusters as a function of their positions in the galaxy, they could see that the clusters are rotating around the center of the galaxy like the disk does.
	www.sciencedaily.com /releases/2002/03/020329071831.htm (1131 words)

	How to Find Celestial Objects
		There are a number of methods used to locate objects in the sky with the telescope.
		Your telescope is equipped with setting circles-- large dials which indicate the celestial coordinates to which it is pointed.
		If the object is bright enough to be seen with the naked eye, the easiest finding technique is direct pointing.
	www.astro.virginia.edu /~teacha/130_manual/node37.html (791 words)

	[No title]
		Circles draws the deep sky objects accordingly to their apparent radius (where available in the catalogs), and Symbols represents the deep sky objects using six classic symbols matching the object type in the catalogs: galaxies, nebulae, planetary nebulae, globular clusters, open clusters and others.
		Object centered is useful to locate objects exactly under the mouse point, in order to measure Angular Separations between two objects on the map.
		Celestial Maps 5.0 was completed in 1996 by Ovidiu Vaduvescu of The Astronomical Institute of the Romanian Academy in Bucharest and included with his PhD Thesys with Babes-Bolyai University in Cluj-Napoca, Romania.
	www.astroclubul.org /ovidiuv/maps90/Maps.txt (12809 words)

	Meade Instruments Corporation - 7" Maksutov-Cassegrain, 8" and 10" Schmidt-Cassegrains Instruction Manual
		Analogous to the Earth-based coordinate system of latitude and longitude, celestial objects are mapped according to a coordinate system on the "celestial sphere," the imaginary sphere on which all stars appear to be placed.
		With all celestial objects, therefore, capable of being specified in position by their celestial coordinates of Right Ascension and Declination, the task of finding objects (in particular, faint objects) in the telescope is vastly simplified.
		It should be emphasized that precise alignment of the telescope's polar axis to the celestial pole for casual visual observations is not necessary.
	meadetelescopes.com /manuals/lx50/apxa.html (1527 words)

	ICRS Narrative (Site not responding. Last check: 2007-10-09)
		The equinox, therefore, is a direction in space along the nodal line defined by the intersection of the ecliptic and equatorial planes; equivalently, on the celestial sphere, the equinox is at one of the two intersections of the great circles representing these planes.
		Furthermore, because these radio sources are very distant extragalactic objects (mostly quasars) that are not expected to show measurable intrinsic motion, a reference frame defined by VLBI positions should be "more inertial" (less subject to spurious rotation) than a reference frame defined by galactic objects such as stars or pulsars.
		International Celestial Reference Frame (ICRF) is a catalog of adopted positions of 608 extragalactic radio sources observed with VLBI, all strong (>0.1 Jy) at S and X bands (wavelengths 13 and 3.6 cm) [9].
	aa.usno.navy.mil /faq/docs/ICRS_doc.html (4516 words)

	quasar on Encyclopedia.com (Site not responding. Last check: 2007-10-09)
		Quasars were discovered as the visible counterparts of certain discrete celestial sources of radio waves (see radio astronomy).
		If quasars were simply objects being ejected from nearby galaxies at high speeds, and not the distant objects they appear to be, then some would have blue shifts.
		This is a NASA image of a recently discovered quasar, a brilliant object at the center of a galaxy that formed 13 billion years ago when the universe was young.
	www.encyclopedia.com /html/q1/quasar.asp (590 words)

	Introduction to Celestial Navigation
		A sextant (for measuring the angle of celestial objects above the horizon,) an accurate clock that can be read to hours, minutes and seconds (four seconds error can put you off a mile) and, finally, a copy of the "Nautical Almanac" for the current year.
		One point is your assumed position and another is the nearest pole (north or south.) The third point is the geographical position (GP) of the celestial object that you observed.
		These three points form the "navigational triangle" and "sight reduction" or "solving the navigational triangle" is the process used to determine the altitude and azimuth the celestial object would have had if you had really been at your assumed position.
	www.nav.org /cel/introduction.html (1429 words)

	Almanacs and tables (from navigation) -- Encyclopædia Britannica
		One of the earliest tabulations of the day-to-day positions of the heavenly bodies was Ephemerides, compiled by the German astronomer Regiomontanus and published by him in Nürnberg in 1474.
		This work also set forth the principle of determining longitude by the method of lunar distances—that is, the angular displacement of the Moon from other celestial objects.
		GP can thus be stated in terms of celestial coordinates, with the declination of the celestial object equal to latitude and the...
	www.britannica.com /eb/article-61188 (846 words)

	Naming and Buying Stars - What you should know
		The naming and selling of celestial objects has been going on for several years but it is only in the last few years that enquiries have been directed to myself and the Society on a regular basis.
		For centuries names have been given to bright or notable celestial objects by astronomers, many of these names have stuck and are still in use today.
		The naming of celestial objects by organisations other than the IAU is therefore not recognised by any other astronomical or scientific body anywhere.
	www.delscope.demon.co.uk /information/namingstars.htm (3946 words)

	Meade Instruments Corporation - #497 Autostar Computer Controller for ETX-90EC, -105EC, -125EC
		Object Database: Included within Autostar's database are all of the following astronomical objects - a range of objects certain to keep even the most active amateur astronomer growing in his or her studies of the skies for years:
		In the (uncommon) event that an object is not in Autostar's database, enter the object's RA and Dec. from a star catalog or monthly magazine, press GO TO and the telescope automatically slews to the object, placing it in the field of view.
		Point and click to any celestial object on the PC display and watch as the telescope moves to the object and places it in the field of view.
	www.meade.com /catalog/autostar/497_autostar.html (1130 words)

	Orion Telescopes and Binoculars - IntelliScope® Computerized Object Locator
		Simply plug the Computerized Object Locator into the base of any SkyQuest XT IntelliScope and you're all set to locate and view any of 14,000 celestial objects.
		Simply plug the Computerized Object Locator into the base of any SkyQuest XT IntelliScope Dobsonian and you’re all set to locate and view any of 14,000 celestial objects in seconds.
		The Object Locator’s database includes a lifetime of celestial objects to view: 837 stars (including double and variable stars), 7,840 NGC objects, 5,386 IC objects, 101 Messier objects, 8 major planets, and 99 user-entered objects.
	www.telescope.com /sdx/146293.jsp (557 words)

	DCP - Canadian Contributions to Stellar Research - Celestial Objects
		In this theory, the moon is composed mainly of material from the impactor, heated by the collision, and the theory appears to explain dynamical peculiarities of the Earth-moon system as well as chemical anomalies revealed by the study of moon rocks.
		For an object with mass equal to that of the sun, this radius is about 3 km.
		Large particles produce spectacular meteors, and in rare cases, part of the object survives to reach Earth's surface and is then called a meteorite.
	www.memdewy.com /space/celest.html (2830 words)

	Science News : On the threshold of Cherenkov astronomy; radiation of extremely high energy from several celestial ... (Site not responding. Last check: 2007-10-09)
		Science News : On the threshold of Cherenkov astronomy; radiation of extremely high energy from several celestial objects is leading astronomers to extend their science's spectral range yet again.
		On the threshold of Cherenkov astronomy; radiation of extremely high energy from several celestial objects is leading astronomers to extend their science's spectral range yet again.
		Read 'Science News: On the threshold of Cherenkov astronomy; radiation of extremely high energy from several celestial objects is leading astronomers to extend their science's spectral range yet again.' with a FREE Trial for instant access »
	static.highbeam.com /s/sciencenews/october251986/onthethresholdofcherenkovastronomyradiationofextre/index.html (304 words)

	Celestial Objects for Modern Telescopes : Practical Amateur Astronomy Volume 2 (Practical Amateur Astronomy)
		This is one of the better ones, since it is really much more substantive than the "cheerleading" books that are more useful at gracing the coffee table than the accessory tray of a telescope in use.
		The major plus feature for me is the format of the illustrations, which show the objects through a mirror type diagonal.
		Also are tips on how to get the most out of various sources to identify the object of interest from various catalogs or atlases...
	www.literacyconnections.com /0_0521524199.html (465 words)

	Transport on other celestial objects (Site not responding. Last check: 2007-10-09)
		She is carefully arranging objects on the makeshift altar.
		the foam were a myriad of celestial dancers, or apsaras, symbols...
		Celestial Objects for Modern Telescopes : Practical Amateur Astronomy Volume 2 (Practical Amateur Astronomy)
	hallencyclopedia.com /Transport_on_other_celestial_objects (226 words)

	T6.4 Modern CCD Epoch of Moving Celestial Objects Observations: Algorithms and Software for Their Processing in ...
		The fact is that when one observes a celestial object his CCD matrix registrates as ``by product'' all moving celestial objects fixed during CCD exposition.
		Usually, a test of such observations and an identification of observed moving objects are not produced by observers themselves.
		The author hopes that these algorithms may be useful for near Earth space control and also for a search of the moving celestial objects with the help of the analysis of old and new CCD frames obtained by any telescope at amateur or professional astronomical observatories.
	monet.ncsa.uiuc.edu /adass98/talks/node35.html (399 words)

	Adding Your Own Pictures and/or Multimedia Files to the Virtual Sky
		TheSky6 gives you tools that can be used to associate pictures, text, sound, or video with celestial objects on the Virtual Sky.
		To associate this photograph with the celestial object "M16" (or NGC 6611), we will create a Sky Database that has the "Image" celestial object type with the help of the User-Defined Data command.
		Make sure that the celestial object to which your trying to associate a picture is visible.
	www.bisque.com /help/TheSkyV6/AddingOwnImages.htm (1307 words)

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