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Topic: NGC 6543

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	NGC6543text (Site not responding. Last check: 2007-10-23)
		NGC 6543 is a middle aged planetary nebula having been around for some 18,000 years.
		The former core of the dead star is now a compact cinder, a white dwarf emitting powerful winds and radiation that ionize the various layers of the previously ejected stellar envelope.
		NGC 6543 has the distinction of being the first planetary nebula to have its spectrum taken.
	www.robgendlerastropics.com /NGC6543text.html (505 words)

	Cat's Eye Nebula - Wikipedia, the free encyclopedia
		NGC 6543 is situated almost exactly in the direction of the North Ecliptic Pole.
		The central star of NGC 6543 is an O-type star, with a temperature of approximately 80,000 K. It is approximately 10,000 times as luminous as the sun, and its radius is about 0.65 times the solar value.
		Observations of NGC 6543 at infrared wavelengths reveal the presence of stellar dust at low temperatures.
	en.wikipedia.org /wiki/NGC_6543 (2092 words)

	Deep-Sky Corner / Dra / NGC 6543: Cat's Eye Nebula
		NGC 6543 gehört zu den komplexesten planetarischen Nebeln.
		In Abbildung 2 ist der Halo von NGC 6543 zu erkennen, welcher einige fetzenartige Helligkeitsunterschiede aufweist.
		Bei kleinen Vergrößerungen ist NGC 6543 kaum von einem 8mag hellen Stern zu unterscheiden.
	deepsky.astronomie.info /Dra/ngc6543/index.de.php (997 words)

	NGC 6543
		This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the "Cat's Eye Nebula." Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high-speed gas and unusual shock-induced knots of gas.
		Estimated to be 1,000 years old, the nebula is a visual "fossil record" of the dynamics and late evolution of a dying star.
		NGC 6543 is 3,000 light-years away in the northern constellation
	www.racine.ra.it /planet/testi/Foto/ngc6543.htm (447 words)

	Planetary Nebula NGC 6543 (SEDS HST Archive 81 of 135)
		This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the "Cat's Eye Nebula." Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high-speed gas and unusual shock-induced knots of gas.
		Estimated to be 1,000 years old, the nebula is a visual "fossil record" of the dynamics and late evolution of a dying star.
		NGC 6543 is 3,000 light-years away in the northern constellation Draco.
	www.seds.org /hst/NGC6543a.html (457 words)

	Initial ISO results: NGC 6543 (Site not responding. Last check: 2007-10-23)
		SWS spectra of both NGC 7027 and NGC 6543 are the subject of the ISO dedicated Astronomy and Astrophysics Letter;
		"The central stars of the planetary nebulae NGC 7027 and NGC 6543", D.A. Beintema et al.
		NGC 6543 was also discussed in the item "Different Impressions of a Dying Star" that appeared in the ESA press release;
	www.iso.vilspa.esa.es /galleries/cir/NGC6543.html (84 words)

	Cat’s Eye Nebula (NGC 6543)
		A young planetary nebula in the constellation Draco, midway between Delta and Zeta Dra; one of the brightest objects of its type, its resemblance to a cat’s eye is due to a series of gas loops that have been ejected by the central star over the past 1,000 years or so.
		Historically, NGC 6543 was the first planetary to be observed with a spectroscope and to reveal the presence of emission lines.
		This started the controversy about whether planetaries consist of numerous stars or, as turned out to be the case, clouds of diffuse gas.
	www.daviddarling.info /encyclopedia/C/Cats_Eye_Nebula.html (754 words)

	NGC 6543
		Planetary Nebula NGC 6543 (= H IV.37), in Draco
		NGC 6543 is situated almost exactly in the direction of the North Ecliptic Pole.
		This means that the normal vector of Earth's orbital plane (and also the total angular momentum vector of our solar system) points to a direction very close to this nebula, and that those diagrams of planetary orbits in the yearbooks and magazines represent the view of them from this planetary.
	www.seds.org /messier/xtra/ngc/n6543.html (256 words)

	ESA - Space Science - Exploring space - Cat's Eye Nebula (NGC 6543)
		The Cat's Eye Nebula (NGC 6543), seen in detail by the NASA/ESA Hubble Space Telescope, is one of the most complex planetary nebulae ever seen in space.
		However, astronomers have instead shown that these rings are likely to be the rule rather than the exception.
		Hubble first revealed NGC 6543's intricate structures including concentric gas shells and unusual shock-induced knots of gas in 1994.
	www.esa.int /esaSC/SEMFB91A90E_exploring_0.html (311 words)

	The central stars of the planetary nebulae NGC 7027 and NGC 6543 (Site not responding. Last check: 2007-10-23)
		The central stars of the planetary nebulae NGC 7027 and NGC 6543
		Infrared spectra of NGC 7027 and NGC 6543 ranging from 2.4 to 45
		The non-detection is not expected based on a flbody approximation for the spectrum of the central star.
	www.ipac.caltech.edu /iso/AandA/I0017.html (270 words)

	The Expansion Parallax of NGC 6543 (Site not responding. Last check: 2007-10-23)
		A linear representation of the [O III] surface brightness of the Cat's Eye Nebula (NGC 6543).
		These images were obtained with the Wide Field Planetary Camera onboard the Hubble Space Telescope in 1994 (epoch 1; obtained by J. Harrington) and 1997 (epoch 2; obtained by S.
		We have measured this expansion using multiple analysis techniques: the results of these calculations are completely consistent with one another, and will be reported in a paper by Reed, Balick, Hajian, Klayton, Giovanardi, Casertano, Panagia, & Terzian (1999, Astronomical Journal, in press).
	ad.usno.navy.mil /pne/ngc6543/ngc6543.html (100 words)

	Above the clouds » NGC 6543 (Cat eye nebula) (Site not responding. Last check: 2007-10-23)
		Above the clouds » NGC 6543 (Cat eye nebula)
		The Cat eye nebula is a planetary nebuls found in the constellation Draco.As I mentioned before it is a very small neb that resembles a bright blue star shining at a visual mag of 8.1.It was first discovered by William Herschel in 1786.
		NGC 6543 (Cat eye neb) is situated almost exactly in the direction of the North Ecliptic Pole.
	bongo69.vela.net /2006/07/02/ngc-6543-cat-eye-nebula (234 words)

	Precise Positions for the NGC/IC Planetary Nebulae
		Precise (1" or better) positions have been determined or verified for all the planetary nebulae appearing the NGC and IC catalogues.
		Despite publication in 1990 of the "Strasbourg-ESO Catalogue of Planetary Nebulae", many of the objects there are given with either imprecise or simply incorrect coordinates.
		The best published position for the open cluster (also NGC 2818) is in the ESO/Uppsala Survey of the ESO (B) Atlas, first listed by Holmberg et al.
	www.ngcic.org /papers/plnneb.htm (1979 words)

	Initial ISO results: NGC 7027 & NGC 6543 (Site not responding. Last check: 2007-10-23)
		SWS spectra showing the spectral energy distribution of the planetary nebulae NGC 7027 and NGC 6543 in the infra-red
		In the same issue, an LWS grating spectrum of NGC7027 is presented in the letter;
		NGC 7027 is discussed in the ESA Bulletin article (no. 86);
	www.iso.vilspa.esa.es /galleries/cir/NGC7027.html (129 words)

	NGC 6543 (Site not responding. Last check: 2007-10-23)
		Planetary Nebula NGC 6543 (= H IV.37 = Caldwell 6) in Draco
		This means that the normal vector of Earth's orbital plane (and also the total angular momentum vector of our solar system) points to a direction very close to this nebula, and that those diagrams of planetary orbits in the yearbooks and magazines represent the view of them from this planetary :).
		Bill Arnett's Cateye Nebula NGC 6543 photo page, info page.
	www.math.uic.edu /~mccarron/hou/color/n6543.html (204 words)

	ngc6543
		Description: NGC 6543 and IC 4677 (large and faint at mag.
		bright field star to the west of ngc 6543.
		E.E. Barnards original notes on NGC 6543 and IC 4677.
	www.fortunecity.com /greenfield/twyford/637/ngc6543.htm (208 words)

	Chandra :: Photo Album :: NGC 6543 (Cat's Eye Nebula) :: 08 Jan 01
		The intensity of X-rays from the central star was unexpected, and it is the first time astronomers have seen such X-ray emission from the central star of a planetary nebula.
		The ACIS X-ray camera aboard Chandra observed NGC 6543 on May 10-11, 1999, for a total exposure time of 46,000 seconds.
		Right image: This composite image of Chandra and Hubble Space Telescope data offers astronomers an opportunity to compare where the hotter, X-ray emitting gas appears in relation to the cooler material seen in optical wavelengths.
	chandra.harvard.edu /photo/2001/1220/index.html (309 words)

	IAAC Observations Matching Your Criteria (Site not responding. Last check: 2007-10-23)
		(IAAC) Obj: NGC 6543 - Inst: 30" f4 dob
		Re: (IAAC) Obj: NGC 6543 - Inst: 30" f4 dob
		(IAAC) Obj: NGC 6543 - Inst: 8" f/6 Newtonian
	www.visualdeepsky.org /search.cgi?catalogs=NGC&ids=6543 (370 words)

	IC 4677 (part of NGC 6543) observation (Site not responding. Last check: 2007-10-23)
		The following comments on IC 4677 are from Harold Corwin's investigation of this object from the NGC/IC Project - go to the "Corrected NGC/IC" page for his NGC/IC corrections.
		IC 4677 is a part of the corona of NGC 6543, the bright planetary near the north pole of the ecliptic.
		It is a complex of relatively bright knots in the planetary's corona, preceding the central star by an arcminute or so.
	observers.org /reports/97.11.01.5.html (400 words)

	Image of the Day : The Cat's Eye
		The Hubble Space Telescope has cast its eye on a fuzzy patch of emissions in space known as the Cat's Eye Nebula, revealing a series of concentric rings in new detail.
		Formally cataloged NGC 6543, the Cat's Eye is a planetary nebula, a class of objects so-named because when they were first noticed, through the small telescopes available to early astronomers, they looked like the fuzzy disks of Jupiter and the other gas-giant planets.
		Like others, the Cat's Eye formed when a Sun-like star gently ejected its outer gaseous layers toward the end of its life.
	www.space.com /imageoftheday/image_of_day_040909.html (269 words)

	McDonnell Center for the Space Sciences (Site not responding. Last check: 2007-10-23)
		NGC 6543, or the "Cat's Eye Nebula," is a fossil record of the late stages of a
		planetary nebulae ever seen, NGC 6543, nicknamed the "Cat's Eye
		The term planetary nebula is a misnomer; dying stars create these
	geodynamics.wustl.edu /mcss/wngc6543a-c.htm (400 words)

	Messier Questions & Answers
		The NGC erroneously takes this cluster for M24, although Messier without doubt described the star cloud.
		M40 is a double star which Messier found and measured when looking in vain for a non-existent nebula reported by 17th century observer Jan Hevelius (this answers the question why this object is included: Messier had logged the position, thus it got a number).
		So he was not looking exactly near the ecliptical pole, where the Cat Eye Nebula (NGC 6543) is situated.
	www.seds.org /messier/m-q&a.html (2095 words)

	ESA - Space Science - Space sensations - Cat's Eye Nebula (NGC 6543)
		ESA - Space Science - Space sensations - Cat's Eye Nebula (NGC 6543)
		Cats may have nine lives, but this star only has one and here it is caught in its death throes, causing this ejection of glowing gases into outer space over a thousand years ago.
		Taken by the Wide Field and Planetary Camera on board NASA/ESA's Hubble Space Telescope, this image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the 'Cat's Eye Nebula'.
	www.esa.int /esaSC/SEM87NXLDMD_sensations_0.html (246 words)

	Cat's Eye Nebula - NGC 6543 - from the film Time After Time
		Cat's Eye Nebula - NGC 6543 - from the film Time After Time
		Celebrating nonverbal films like Baraka, Koyaanisqatsi, Microcosmos and the people who made them
		Cat's Eye Nebula - NGC 6543 - Time After Time
	www.spiritofbaraka.com /slideshow.aspx?image=time-after-time-1104 (123 words)

	Vern’s Astronomy Weblog » NGC 6543
		June 21, 2006 at 2:18 pm · Filed under Astronomy, Deep sky, Planetary Nebula
		The cat’s eye nebula, NGC 6543, is a small, bright, bluish-green planetary nebula in the constellation Draco.
		Image taken on June 20, 2006 at 06:51 UT from Louisville, CO with a Celestron Nexstar11 telescope, Meade F3.3 focal reducer, and Astrovid Stellacam II video camera.
	www.raben.com /weblog/2006/06/21/ngc-6543 (166 words)

	[82.06] The Expansion Parallax Distance to NGC 6543 (Site not responding. Last check: 2007-10-23)
		[82.06] The Expansion Parallax Distance to NGC 6543
		We present results recently obtained from a continuing program of measuring direct distances to galactic planetary nebulae by detecting the expansion parallaxes of their envelopes.
		We report on the measurement of the optical expansion parallax of NGC 6543 using two epochs of narrowband HST-WFPC2 data.
	www.aas.org /publications/baas/v30n4/aas193/617.htm (127 words)

	HubbleSite - Image: Planetary Nebula NGC 6543: Gaseous Cocoon Around a Dying Star
		HubbleSite - Image: Planetary Nebula NGC 6543: Gaseous Cocoon Around a Dying Star
		Planetary Nebula NGC 6543: Gaseous Cocoon Around a Dying Star
		Selecting this will take you out of this index and relocate you to a Gallery Search Results page.
	www.hubblesite.org /gallery/album/nebula_collection/pr1995049h (90 words)

	The NGC Objects
		Once you click onto a particular link use the "Find" feature of
		your browser to locate the NGC object on that page.
		All files associated with The Constellations web page are
	www.dibonsmith.com /ngc.htm (43 words)

	ESA - Space Science - Home - Cat's Eye Nebula (NGC 6543)
		ESA - Space Science - Home - Cat's Eye Nebula (NGC 6543)
		Dying star creates sculpture of gas and dust
		Why are things in space the shape that they are?
	www.esa.int /esaSC/SEMFB91A90E_index_2.html (310 words)

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