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Topic: Seeing astronomy

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	Astronomical seeing - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-21)
		The seeing disc diameter ("seeing") is a reference to the best possible angular resolution which can be achieved by an optical telescope in a long photographic exposure, and corresponds to the diameter of the fuzzy blob seen when observing a point-like star through the atmosphere.
		Seeing is one of the biggest problems for Earth-based astronomy: while the big telescopes have theoretically milli-arcsecond resolution, the real image will never be better than the average seeing disc during the observation.
		The diameter of the seeing disc (technically the Full Width at Half Maximum intensity (FWHM)) is a common measure of the astronomical seeing conditions.
	en.wikipedia.org /wiki/Seeing_disk (2488 words)

	AllRefer.com - seeing (Astronomy, General) - Encyclopedia
		seeing, in astronomy, the clarity with which stars and other celestial objects can be observed.
		Astronomical observatories are located in areas where seeing is good, usually on mountains where they are above some of the more turbulent layers of the atmosphere and also removed from cities' lights.
		Astronomers consider the seeing excellent when the star image covers 0.5´´ of sky or less.
	reference.allrefer.com /encyclopedia/S/seeing.html (405 words)

	Astronomical seeing -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-21)
		Astronomical seeing refers to the blurring and (A very short time (as the time it takes the eye blink or the heart to beat)) twinkling of astronomical objects such as stars caused by the Earth's atmosphere.
		Seeing is one of the biggest problems for Earth-based astronomy: while the big (A magnifier of images of distant objects) telescopes have theoretically milli-arcsecond (Analysis into clear-cut components) resolution, the real image will never be better than the average seeing disk during the observation.
		The FWHM of the seeing disk (or just Seeing) is usually measured in (A 60th part of a minute of arc) arcseconds, abbreviated with the symbol (").
	www.absoluteastronomy.com /encyclopedia/a/as/astronomical_seeing.htm (1853 words)

	* Seeing - (Astronomy): Definition (Site not responding. Last check: 2007-10-21)
		Seeing is a term used to express the effects of the atmosphere on telescopic observation.
		seeing -- a measure of the steadiness of the atmosphere during astronomical observations.
		Seeing a broad iron K line meant that ASCA was probing deeper into the region around a fl hole than ever before, even deeper than what Hubble probes.
	www.mimihu.com /astronomy/seeing.html (2044 words)

	Seeing (astronomy) : Atmospheric seeing (Site not responding. Last check: 2007-10-21)
		Seeing is usually measured in arcseconds, abbreviated with the symbol (").
		Seeing is one of the biggest problem for Earth-based astronomy: while the big telescopes have theoretically milli-arcsecond resolution[?], the real image will never be better than the average seeing during the observation.
		He could partly because, now that he knew her, it was harder than before to orchestra-door; he stood speaking to the first violinist, and the.
	www.termsdefined.net /at/atmospheric-seeing.html (546 words)

	MVAS Message Board (Site not responding. Last check: 2007-10-21)
		Seeing is a measure of how stable the sky is. For example stars twinkle more when the seeing is poor.
		Seeing is more subjective and there are a couple of methods floating around to set a numerical value on it.
		The better the seeing is, the more you can see, In "good to perfect" seeing you can easily see all seven stars of the little dipper and several others within the constellation.
	www.mvas.org /discus/messages/10/52.html?1100355838 (603 words)

	Astronomy [encyclopedia] (Site not responding. Last check: 2007-10-21)
		Astronomy is the science dealing with all the celestial objects in the universe, including the planets and their satellites (e.g.
		Radio Astronomy is the study of the Universe and astrophysical phenomena, by examining their emission of electromagnetic radiation in the radio portion of the spectrum.
		Learn about astronomy and space exploration, from the principles of rocket propulsion, through the early history of artificial satellites and manned spaceflight, to the modern marvels of the Hubble Space Telescope.
	kosmoi.com /Science/Astronomy (1035 words)

	mayanintro
		Seeing what they actually saw looking at the unfolding spectacle of the sky provides you with an appreciation for the way celestial objects interact with one another over short and long durations of time.
		Seeing that for yourself, rather than just reading about it as a series of interconnected periodicities which express a mathematical ratio between rates of motion across an imaginary plane of reference, makes Mayan calendrical astronomy more than just an intellectual exercise given over to saying what might be true or what might be possible.
		To say that it might have been an eclipse interval in their calendrical structure, however, probably would belie the facts because 819, while certainly close enough to measuring the moon's nodical motion, is not an adequate projection of the moon's synodic period to be immediately useful as an eclipse interval.
	www.geocities.com /Athens/Delphi/9976/mayanintro.html (1760 words)

	Seeing (astronomy) (Site not responding. Last check: 2007-10-21)
		In astronomy, seeing is a measure of the atmosphere's optical quality.
		His nerve himself incapable of attempting to build it up again; he was fated to thrills of life; his mask brightened for a moment, but behind it hope of his misfortune on the usurer.
		Would she an absolute love.html">love, and the love of Raoul and Marie had not bound them supposing that the countess did follow him to some foreign.
	www.explainthis.info /se/seeing-(astronomy).html (528 words)

	Seeing, Astronomy (Site not responding. Last check: 2007-10-21)
		To quantify seeing, one could simply judge the amount and amplitude of twinkling but it would be to hard to get a good handle on the range or value.
		The central disk is known as the Airy disk and it's size in inversely proportional to the size of the telescope objective.
		One fact little understood by purchasers of new telescopes is that the effects of poor seeing increase dramatically as the size of the telescope is increased.
	schmidling.netfirms.com /seeing.htm (1226 words)

	Astronomy Index
		Astronomy magazines and yearly almanacs usually list where the planets can be found, usually referring to a planet's location as
		Astronomers estimate that we can see about 150 stars that have some color tinge, and of these, only about 30 show an obvious blue, yellow, orange, or red color.
		Help an astronomy club in your community hold a star party that is open to the public.
	www.relia.net /~thedane/astronomy.html (1553 words)

	astronomic "seeing" (Site not responding. Last check: 2007-10-21)
		The seeing is the term used in astronomy to quantify the steadiness or the turbulence of the atmosphere.
		Seeing should not be confused with sky transparency, which is the terminology used to qualify the darkness of the sky.
		The effects of the telescope dome on seeing quality are dependent largely on the design and thermal characteristics of the structure itself and not on the site at which the facility is located.
	www.ayton.id.au /gary/Science/Astronomy/Ast_seeing.htm (3014 words)

	seeing -- Encyclopædia Britannica
		Seeing is dependent upon the degree of turbulence in the Earth's atmosphere for a given telescope.
		Scintillation, the “twinkling” of stars to the unaided eye, is a commonly known result of turbulence in the higher reaches of the atmosphere.
		Spiritualists also use the term to mean seeing or hearing (clairaudience) the spirits of the dead that are said to surround the living.
	www.britannica.com /eb/article-9066574 (613 words)

	Seeing Conditions - Ryukyu Astronomy Club (Site not responding. Last check: 2007-10-21)
		Seeing is mainly our observation of the distortion caused by different layers of air going different directions due to wind, the jet stream, temperature differences, etc. It causes images to waver.
		In the eyepiece you can easily see the wavering air when you pump up the magnification on a planet or the moon but it affects all objects viewed, especially in larger aperture telescopes.
		This results in a 'glowing' sky and makes faint objects very difficult or impossible to see as the effect on contrast (difference in light levels) is to make the fl velvety sky behind the object not fl, but potentially gray.
	www.nexstarsite.com /_RAC/articles/SeeingConditions.htm (489 words)

	K3's Astronomy - Jupiter Photos Quality
		The seeing is influenced by wind, air turbulence, temperature of air and temperature of ground and by amount of moisture in air.
		Seeing is often very good for planetary astrophotography when a very soft fog is present - then atmosphere is usually very stable.
		Here it is an example of various results achieved in various seeing conditions.
	www.pk3.org /Astro/jupiter_details_011231.htm (129 words)

	Enjoy books by Regina Scott
		That initial awe was replaced by the science of astronomy during the Renaissance.
		Her father had attempted to teach her astronomy when she was younger; however, her mother had insisted that she learn nothing but household tasks.
		This article is an abbreviated version of an article published in the January 2003 edition of The Regency Plume, a bimonthly newsletter of historical information published by fellow Regency author Marilyn Clay.
	users.owt.com /reginascott/astronomy.html (943 words)

	Astronomy
		- Astronomy, one of the oldest sciences, is the study of celestial bodies such as planets, stars, and other objects in space.
		Astronomers locate objects in the daytime or nighttime skies and measure their magnitudes and motions, searching to find what they are made of and how they create their light.
		This site's main focus is theoretical and related to topics such as the Big Bang, the expansion of the universe, and the number of dimensions in the universe; however, it also provides basic information about the formation of planets and stars and the structure of cosmic systems.
	www.42explore.com /astronomy.htm (924 words)

	Seeing - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-21)
		In astronomy, seeing is a technical term related to the blurring effects of air turbulence in the atmosphere
		In the occult seeing refers to "the sight" or the ability to see auras or to predict the future
		This is a disambiguation page, a list of pages that otherwise might share the same title.
	en.wikipedia.org /wiki/Seeing (121 words)

	Alan Boyle: Cosmic Log - Cosmic Log - MSNBC.com
		The best way to honor the occasion is to turn down the lights and hunt for some celestial wonders — for example, a plenitude of planets or a concomitance of comets.
		Astronomy Week comes to a climax next weekend with Astronomy Day — but astronomical societies around the country are scheduling special events throughout the week, not just on the big day.
		Before Spitzer turned its attention to DR21, the most that astronomers could see in radio and infrared wavelengths was a powerful jet emanating from the cloud.
	www.msnbc.msn.com /id/4719358 (2743 words)

	Home Page for the Atmospheric Seeing at ING (Site not responding. Last check: 2007-10-21)
		RoboDIMM is intended foremost to provide observers at ING telescopes with a real-time guide to seeing conditions, and its function as a site testing instrument is always subject to results from the campaigns undertaken for that purpose at ORM.
		Seeing FWHM estimates from RoboDIMM are considered by ING to be reliable in almost all atmospheric conditions.
		Shortly after it started operating in August 2002, RoboDIMM seeing was shown to agree with the IAC's DIMM seeing monitor to within better than 10%, using samples of typically a few hour's length.
	www.ing.iac.es /Astronomy/development/seeing (278 words)

	Astronomy - seeing prediction for MOPS (Site not responding. Last check: 2007-10-21)
		The estimated seeing index ranges from 1 (poor) to 5 (excellent).
		This value is computed based on the integration of turbulent layers in the atmosphere.
		Dewpoint temperature less than 2 ° lower than ambient temperature is shown in yellow to stress on dew risks.
	pages.unibas.ch /geo/mcr/3d/meteo/seeing/nmm22/MOPS.html (108 words)

	Earth's best view of the stars — Antarctica's Dome C
		While Antarctica has long been recognised as having characteristics that make it a potentially excellent site for astronomy, seeing conditions at the South Pole itself (latitude 90 degrees south) are poor due to atmospheric turbulence within 200 - 300 m of the ground.
		Dome C is 400 m higher than the South Pole and further inland from the coast.
		Seeing is defined as the amount of star jitter or sharpness of astronomical images, which is affected by atmospheric conditions close to Earth.
	www.eurekalert.org /pub_releases/2004-09/uons-ebv091304.php (718 words)

	seeing on Encyclopedia.com (Site not responding. Last check: 2007-10-21)
		in astronomy, the clarity with which stars and other celestial objects can be observed.
		Seeing the light: after struggling along with other manufacturers during the first part of this decade, foundries are seeing an improved environment.
		VATICAN CITY, ITALY - A women screams "we have a new Pope, we have a new Pope," after seeing white smoke coming out of the chimney on the roof of the Sistine Chapel, Tuesday, April 19, 2005.
	www.encyclopedia.com /html/s1/seeing.asp (761 words)

	Space & astronomy - Seeing?
		>seeing has been like in the south over the last few days (specifically
		I have no idea what the seeing was like.
		Seeing was good in Farnham - 30 Miles from Portsmouth.
	www.spacebanter.com /q-t_38243-Seeing.html (498 words)

	Seeing - TheBestLinks.com - Seeing (astronomy), Visual perception, Disambig, ... (Site not responding. Last check: 2007-10-21)
		Seeing - TheBestLinks.com - Seeing (astronomy), Visual perception, Disambig,...
		In astronomy, seeing is a technical term related to the clarity of the atmosphere
		This is a disambiguation page, i.e., a navigational aid which lists other pages that might otherwise share the same title.
	www.thebestlinks.com /Seeing.html (131 words)

	Astrodigital: Limiting Magnitude for Telescopes
		In the course of either buying or using a telescope, it would be nice to know how much more powerful the telescope is than your eye in gathering light.
		This number is based solely on the difference in total surface area of your eye vs the telescope.
		The applet will also give an approximation of the magnitude of the faintest point source of light that you should be able to see with a telescope of the specified diameter.
	www.astrodigital.org /astronomy/seeing.html (374 words)

	The Astronomical Society of Harrisburg
		As a boy he developed an avid interest in astronomy after seeing the brilliant six-tailed comet of 1744.
		Even though Messier came from a poor family and had limited schooling he was hired at the age of 21 as a draftsman by Joseph-Nicholas de l'Isle, Astronomer to the French Navy.
		He was so totally dedicated to astronomy that when his wife lay dying it was with the greatest reluctance that he left his telescope to be at her side.
	www.astrohbg.org /mitsky/messier.php (1134 words)

	Amazon.ca: Books: Seeing in the Dark: How Amateur Astronomers Are Discovering the Wonders of the Universe (Site not responding. Last check: 2007-10-21)
		Seeing in the Dark takes the reader on a series of tours: of the Solar System, the Milky Way, and beyond into deep space, all the while with pit stops to talk and observe with prominent amateurs.
		Indeed, there seems to be a covert thesis running through the book: that seeing in the dark, that being a watcher of the sky at night, is good food for the soul.
		Seeing in the Dark: How Backyard Stargazers are Probing Deep Space and Guarding Earth from Interplanretary Peril written by Timothy Ferris is a wonderfully well-written personal account about astronomy.
	www.amazon.ca /exec/obidos/ASIN/0684865807 (2129 words)

	Talk:Astronomical seeing - Wikipedia, the free encyclopedia
		Note: The original version of this article can be found in the page history of seeing (astronomy).
		Does "seeing" really refer to the problem of atmospheric disturbance, or is "seeing" a qualitative term, i.e.
		"good seeing" or "bad seeing", which can be affected by the atmospheric conditions?
	www.wikipedia.org /wiki/Talk:Seeing_disk (109 words)

	96.06.13: Seeing and Learning Astronomy and Cosmology Through the Lens of Music
		I must say that,when setting the stage for new ways of exploring Music, Astronomy and Cosmology, it is a lot of fun to see the expression on students faces when they learn the historical roots of Pythagorean astronomy, which thought that bodies moving through space produced sounds and were all harmonized, ‘music of the spheres’.
		After seeing the night sky through the telescope, students might be motivated to learn such “Precision” skills as, how to locate stars by celstial coordinates, how the telescope magnifies, or how to read a star atlas to identifiy constellations.
		If the beam of light is too light to see on the screen, this would be the knob to turn or adjust.
	www.cis.yale.edu /ynhti/curriculum/units/1996/6/96.06.13.x.html (4876 words)

	Morgan Davis - Astronomy - Seeing (Site not responding. Last check: 2007-10-21)
		Seeing: the quality of observing conditions induced by turbulence in Earth's atmosphere, which blurs the images of astronomical objects.
		Amateurs have long recorded the seeing quality in their observing logbooks on a rather subjective scale of 1 to 10, with 1 hopeless and 10 perfect.
		People's ideas of what the numbers mean are likely to differ.
	www.morgandavis.net /pursuits/astro/seeing.html (253 words)

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