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| | M57, Ring Nebula |
 | | Even though the Ring is probably the most photographed object in the sky, it is so much brighter, that the galaxy is not visible in images optimized to bring out detail in M57. | | | The Ring belongs to a class of objects known as "planetary nebulae" which have nothing whatever to do with planets. | | | It was too late to do any serious imaging so I just pointed the scope at the Ring Nebula (M57) to see what my new CCD camera could do and I "discovered" a faint smudge just to the North of it in the same field. |
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http://schmidling.netfirms.com/m57.htm
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| | Ring Nebula M57 |
| | Plotted on it are the magnitude of field stars nearby as determined by Arne Henden (USNO-Flagstaff) who observed the field with a CCD on the USNO 1 meter telescope. | | | This nebula may look like a butterfly, but it’s bigger that our Solar System. | | | William Herschel created the term "Planetary Nebula" in 1785 for those objects looking like a planet's disk - maybe adopting Darquier's description and still impressed by his finding of Uranus in 1781. |
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http://www.eso.org/outreach/eduoff/edu-prog/catchastar/CAS2002/cas-projects/germany_m57_1
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| | M57 The Ring Nebula |
| | The nebula shines at magnitude 8.8, while the central star is a faint magnitude 15.29. | | | This is an RGB composite CCD image taken with an SBIG ST-8E CCD on a Takahashi Mewlon 210 telescope at prime focus. | | | The ring nebula is a so-called "planetary nebula", although it has nothing to do with a planet. |
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http://members.cox.net/sidleach/m57.htm
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| | Three Faces of the Ring Nebula M57 |
| | The same CCD image as above, processed to show the full extension and contrast range of the Ring nebula, as negative and positive image. | | | All 3 of these images are taken from a single CCD exposure, but displayed at 3 different contrast levels. | | | Very deep exposures show that the Ring Nebula and its loops are surrounded by a nearly perfectly circular halo of glowing material. |
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http://seds.lpl.arizona.edu/messier/more/m057_jac.html
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| | Hubble Heritage |
| | Although the main purpose of the Hubble Heritage observations is to provide the spectacular images to the public, our data--including the new Ring Nebula images--will also be released to the professional astronomical community at the same time in digital form, so that detailed scientific analyses can be conducted." | | | The digital image data will be placed immediately into the HST archive, for the benefit of interested professional astronomers. | | | The fact that no globules are seen projected against the central region demonstrates that their distribution is in fact toroidal or cylindrical, rather than spherical. |
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http://heritage.stsci.edu/1999/01/supplemental.html
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| | APOD: July 27, 1995 - M57: The Ring Nebula |
| | For more information on the Ring Nebula see The Electronic Universe Project's write-up. | | | Many images of Messier objects can be found in The Electronic Universe Project's The Galaxy Gallery: Messier Objects. | | | At the centre a blue dot is visible which is the old core of the star, known as a white dwarf. |
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http://www.star.ucl.ac.uk/~idh/apod/ap950727.html
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| | Astro Photo |
| | Ring Nebula 14.5" f/8 Cassegrain SBIG ST-10E CCD camera |
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http://www.astrophoto.com/Ring.htm
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| | Ring Nebula |
| | The Ring Nebula is the probably most famous planetary nebula, it is certainly a good example of the class. | | | Planetary nebulae are much, much smaller than diffuse nebulae and thus much more difficult to observe. | | | It was the first planetary nebula to be discovered. |
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http://www.star.le.ac.uk/edu/twn/n6720x.html
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| | Planetary Nebula Sampler: The Ring Nebula |
| | All 3 of these images were taken from a single CCD exposure, but displayed at 3 different contrast levels. | | | This image is displayed in negative since more detail is seen this way. | | | Detailed article based on data from the Subaru 8-m telescope |
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http://www.noao.edu/jacoby/ring.html
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| | Ring Nebula |
| | The term "planetary nebula" is a historical reference: these objects | | | Most of these types of nebulae appear like small disks | | | This is the most famous planetary nebula in the heavens. |
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http://www.darkskyimages.com/m57.htm
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| | M57 The Ring Nebula |
| | Then I applied a "median" filter to just the nebula. | | | Processing was the key to the final result you see. | | | Signal strength from the object at f/18 is also a problem, but the ring is a relatively bright target. |
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http://ccdastrophotography.com/m57HiLRGB.html
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| | The Ring Nebula |
| | Probably one of the easiest deep space objects to observe is the Ring Nebula. | | | This famous planetary is easy to locate (between Beta and Gamma Lyrae). | | | This giant, stellar smoke ring is a definite bluish-purple, and the center portion of the ring is slightly more illuminated than the sky background. |
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http://clifty.com/scott/DSO/6720.html
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| | Ring nebula on Encyclopedia.com |
| | Publication: Regulatory Intelligence Data; Author: INDSTRY GROUP 91 ; Source: TVRAD | | | The nebula is estimated to be more than 5,000 light-years distant. | | | A New Twist on an Old Nebula: Image Analysis Shows Helix Nebula Shape Is Surprisingly Complex. |
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http://www.encyclopedia.com/html/R/Ringnebu.asp
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| | Ring Nebula - Physics Help and Math Help - Physics Forums |
| | If so is it the magnetic field that spins the electrons intensly and the futher away the electrons are from the field, the less spin, and are redshifted with distance? | | | I've seen quite a few different pics of the Ring Nebula and have come to understand that differences were due to the use of different filters of the particles emissions. | | | Side note...it may be possible to see some color in a nebula (not sure how much) if it were bright enough/if you were at the right distance/etc....but certainly nothing like the photos. |
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http://www.physicsforums.com/showthread.php?p=414813
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| | M57 |
| | It has a magnitude of 9.0, and is 2.5 arc-minutes across. | | | NGC 6720 (known as the Ring Nebula and M57) is in the constellation Lyra (The Lyre). | | | The stars are slightly oval since I had not yet trained my drive for periodic error correction |
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http://www.proaxis.com/~sandstone/Astro/Gallery/M57.htm
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| | Ring |
| | M57, NGC6720, the Ring Nebula, from an 8x10 color transparency taken September 16th 1973. | | | The Ring Nebula, also known as M57 or NGC 6720, is found in the constellation Lyra. | | | The Ring Nebula was the first planetary nebula discovered, so called because of its visual spherical appearance through telescopes in the past. |
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http://www.noao.edu/image_gallery/html/im0350.html
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| | M57 - The Ring Nebula |
| | More information about this object can be found at the | | | It is the result of a star (visible in the center of the ring) which ejected its outer shell of gas into surrounding space. | | | This image is a WCMY composite of 35, fifteen-second exposures with no filter from 12 June 1999 (see below) along with cyan (29x15sec), magenta (21x15sec), and yellow (15x15sec) filtered exposures from 12 September 1999. |
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http://www.astroimages.org/ccd/m57.html
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| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. | | | Energy Citations Database (ECD) Document #5983840 - PL 1547.3-5612: A pure nitrogen ring nebula | | | For a journal article, please see the Resource Relation field. |
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http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=5983840
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| | M57, Ring Nebula in Lyra |
| | Its Magnitude 8.8 visual brightness makes it easy to find even in small telescopes. | | | Planetary nebulae are in fact very common in our galaxy, other noteworthy examples being the Helix Nebula and the Dumbbell Nebula, though most of them are much smaller and less significant than these examples. | | | Planetary nebulae are formed in the dying stages of a star when the core fusion reactions decline to the extent that the star's structure cannot be supported - gravity forces the outer part of the star to collapse inwards, causing the inner part to condense and heat up. |
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http://www.astrocruise.com/m57.htm
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| | M57 Ring Nebula |
| | The central star in m57 has a magnitude of +15.9 & spectral type O(H). | | | The Ring Nebula is quite fun to image, so there will be a few on this page. | | | Happy with this image and can see definate structure in the ring, but also took a magnified section & inverted it, & if you know where to look IC1296 is visible. |
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http://www.btinternet.com/~mgn1/m57.html
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| | Observations of object "M57 (Ring Nebula)" |
| | On previous observations, I could not use power beyond 75x due to either wind or seeing conditions. | | | I could even make out that it was ever so slightly elongated. | | | We had a group of 10 newcomers to the Bradley University Amateur Astronomy club that were in awe when they got their first look at this incredible planetary. |
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http://www.lies.com/aaol/view_obs.cgi?obj=m57
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| | Ring Nebula - Wikipedia, the free encyclopedia |
| | It is among the most well known and recognizable examples of a planetary nebula. | | | Planetary Nebula M57 (also known as the Ring Nebula, NGC 6720 or Messier Object 57) is located in the constellation Lyra. | | | M57 is illuminated by a white dwarf of 15.8 visual magnitude. |
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http://en.wikipedia.org/wiki/Ring_Nebula
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| | Ring Nebula M57 |
| | Notes: Ring Nebula;central* var 14 to 16 mag;PK63+13.1 |
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http://kotisivu.mtv3.fi/deepsky/havaintom57-1.htm
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| | Southern Ring Nebula |
| | NGC 3132 is a striking example of a planetary nebula. | | | The name "planetary nebula" refers only to the round shape that many of these objects show when examined through a small telescope. | | | In reality, these nebulae have little or nothing to do with planets, but are instead huge shells of gas ejected by stars as they near the ends of their lifetimes. |
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http://www.inspi.net/hubble-telescope/slides/1998-39.html
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| | Nebulae - Zoom Astronomy |
| | Planetary nebulae have nothing to do with planets. | | | One example of a stellar nursery is the Eagle nebula pictured above. | | | These nebulae are frequently bluish in color because blue light is more efficiently reflected than red light. |
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http://www.enchantedlearning.com/subjects/astronomy/stars/nebulae.shtml
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| | MSN Encarta - Search Results - Ring Nebula |
| | Planetary nebulae, or planetaries, are so called because many of them superficially resemble planets through telescopes. | | | MSN Encarta - Search Results - Ring Nebula | | | The finger ring has traditionally been worn for a number of reasons.... |
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http://uk.encarta.msn.com/Ring_Nebula.html
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| | Ring Nebula -- Encyclopædia Britannica |
| | Huygens also developed the wave theory of light and made significant contributions to the science of dynamics and the use of the pendulum in clocks. | | | Covers integers as well as residue class rings and finite, quadratic, cyclotomic, algebraically closed as well as function fields. | | | Seen from a great distance, such a sphere appears brighter at the edge than… |
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http://www.britannica.com/eb/article-9063718?tocId=9063718
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| | The Virtual Amateur Astronomer® |
| | At the center of the nebula is the 15th magnitude star, which is too faint to see in our telescope. | | | This web page may NOT be copied onto other web sites, but other sites may link to this page. | | | The above is brought to you by Jupiter Scientific, an organization devoted to the promotion of science through books, the internet and other means of communication. |
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http://jupiterscientific.org/virtualastronomer/amateurobservations/ao10.html
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| | Ring Nebula (M57, NGC 6720) |
| | One of the best known planetary nebulae and the second to be discovered, by the French astronomer Antoine Darquier (1718-1802) in 1779 (15 years after the first one, the Dumbbell Nebula); it is located in the constellation Lyra. | | | In small amateur telescopes, the ring becomes apparent at about 100 magnification. | | | The central star, which has a visual magnitude of 14.7 and a surface temperature of over 100,000 K, was discovered by the German astronomer F. von Hahn in 1800. |
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http://www.daviddarling.info/encyclopedia/R/Ring_Nebula.html
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| | The Ring Nebula (Original) |
| | Planetary nebulae are not so named because of an association with planets but because, in a telescope, their round shape resembles a planet. | | | Planetary nebulae are not associated with novae, but are their own discreet phenomenon in the universe. | | | M57, the Ring Nebula in the constellation Lyra is the most famous planetary nebula. |
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http://spacefinder.tripod.com/pages/088o.htm
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| | The Ring Nebula (M57) |
| | The Ring Nebula is one of the most famous objects in the sky and perhaps the most spectacular example of a planetary nebula. | | | Some researchers pointed out as early as 1960 that this might not be the case because the difference of brightness between the inner nebula and outer ring was too great. | | | The above image is from the Hubble Space Telescope. |
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http://www.skyhound.com/sh/archive/jul/M_57.html
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| | eSky: Ring Nebula |
| | The best known of the planetary nebulae, the Ring Nebula appears to lie midway between the stars Sulaphat and Sheliak, in the constellation of Lyra. |
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http://www.glyphweb.com/esky/nebulae/ring.html
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| | NASA - NASA and the Universe Send a Celestial Valentine |
| | Also known as Messier Object 57 and NGC 6720, it is one of the best examples of a planetary nebula, a shell of material ejected from a dying star. | | | Named in order of discovery, the labels that scientists have assigned to the major rings do not indicate their relative positions. | | | From the planet outward, they are known as the D, C, B, A, F, G and E rings. |
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http://www.nasa.gov/mission_pages/cassini/media/valentine-021105.html
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| | APOD: 2005 March 11 - Infrared Ring Nebula |
| | Of course in this well-studied example of a planetary nebula, the glowing material does not come from planets. | | | But graceful looping structures are seen to extend even beyond the Ring Nebula's familiar central regions in this | | | Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. |
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http://antwrp.gsfc.nasa.gov/apod/ap050311.html
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| | Ring Nebula |
| | This Planetary Nebula has an apparent angular size of 1.4 x 1.0 and a visual brightness of 8.8. | | | The Ring Nebula is a planetary nebula which is located in the constellation Lyra. | | | The Ring Nebula has an NGC catalog number of NGC 6720. |
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http://www.absoluteastronomy.com/nebulas/ring.htm
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| | M57 - Ring Nebula |
| | M57 is a planetary nebula, so named because in a small telescope the disk resembles a planet. | | | The material forming the nebula has been ejected from the central star and is slowly moving outward. | | | This gas is energized by the hot central star (notice it is blue in colour) and radiates at a variety of wavelengths, hence the multiple colours. |
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http://www.umanitoba.ca/faculties/science/astronomy/cbrown/imaging/m57
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| | The Lyra Constellation |
| | Additional information about the nebula can be found here. | | | I remember growing up as a kid and it was always the perfect example whenever you would look in an encyclopedia about nebulas (okay, so maybe you didn't look up nebulas as a kid, but I did). | | | I'm sure everybody has seen a picture of the Ring Nebula (featured on our home page). |
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http://www.lyra.org/lyra.html
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| | Ring Nebula.... M57 |
| | Nebulae like the ring nebula are called 'planetary nebulae' because they seemed round like planets when first viewed through telescopes. | | | Filters help us figure out which gas is which. | | | The nebula is approximately a light year across. |
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http://sunra.lbl.gov/~vhoette/Explorations/RingNebula
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| | Ring Nebula |
| | The spherical shells look like rings because they are seen in projection. | | | The Ring Nebula (or M 57) is the most famous of all the planetary nebulae. | | | The Ring Nebula was first cataloged by the French astronomer Charles Messier (1730–1817) and is sometimes designated M 57. |
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http://www.astrographics.com/GalleryPrintsIndex/GP0006.html
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| | Ring Nebula |
| | Send mail to peter@cosmonut.org with questions or comments about this web site. | | | *Please see the description under M27, The Dumbell Nebula, for more information about planetary nebulae. | | | Also visible in this image, but only barely so, is IC1296 a faint 15th magnitude spiral galaxy which is about 350 million light years away! |
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http://www.cosmonut.org/M57.htm
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| | The European Homepage For The NASA/ESA Hubble Space Telescope - Image Archive |
| | The NASA/ESA Hubble Space Telescope has captured the sharpest view yet of the most famous of all planetary nebulae: the Ring Nebula (M57). | | | This photo reveals elongated dark clumps of material embedded in the gas at the edge of the nebula; the dying central star floating in a blue haze of hot gas. | | | The nebula is about a light-year in diameter and is located some 2, 000 light-years from Earth in the direction of the constellation Lyra. |
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http://www.spacetelescope.org/images/html/opo9901a.html
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| | Ring Nebula - definition of Ring Nebula by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. | | | Ring Nebula - definition of Ring Nebula by the Free Online Dictionary, Thesaurus and Encyclopedia. | | | Ring Magazine's list of 100 greatest punchers of all time |
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http://www.thefreedictionary.com/Ring+nebula
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| | HubbleSite - Looking Down a Barrel of Gas at a Doomed Star - 1/6/1999 |
| | This photo reveals dark, elongated clumps of material embedded in the gas at the edge of the nebula; the dying central star is floating in a blue haze of hot gas. | | | Such elongated shapes are common among other planetary nebulae, because thick disks of gas and dust form a waist around a dying star. | | | Astronomers using the Hubble telescope have obtained the sharpest view yet of a glowing loop of gas called the Ring Nebula (M57), first cataloged more than 200 years ago by French astronomer Charles Messier. |
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http://hubblesite.org/newscenter/newsdesk/archive/releases/1999/01
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| | Ring Nebula, M57 |
| | The Ring Nebula (Messier 57, NGC 6720) in Lyra, seen in a three-color reconstruction from BVR CCD frames taken with the 1.1-meter Hall telescope at Lowell Observatory. | | | The three monochrome images and their combination to make a color version are shown here. | | | The red frame emphasizes H-alpha and [N II] emission; multiple emission lines contribute to both B and V passbands. |
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http://www.astr.ua.edu/gifimages/ring.html
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| | 33¢ Ring Nebula |
| | New nebulae can form following such an explosion. | | | Discovered in 1800, this star is the remains of a star that was once more massive than our own sun. | | | The core of the white dwarf may survive the supernova Consisting of tightly-packed neutrons, it is called a neutron star. |
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http://www.unicover.com/EA1CAZ3F.htm
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| | Ring Nebula M57 |
| | Ring Planetary Nebula (M57) taken May 22, 1999 |
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http://members.sigecom.net/mborman/m57.htm
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| | Ring Nebula |
| | The nebula is at a distance of 2,300 light years away and is about 1 light year across (1.4' x 1.0). | | | Still need to work on guiding: the ST-4 was often fooled by air turbulence. | | | The Ring Nebula is a planetary nebula, a shell of gas surrounding an exploded star in the constellation of Lyra. |
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http://www.pk.darkhorizons.org/Ring.htm
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| | TSR Forums - View Profile: RING NEBULA |
| | RING NEBULA is not a member of any public groups | | | CSS and design by The Sims Resource - no duplication allowed without permission | | | Email: Send a message via email to RING NEBULA |
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http://forums.thesimsresource.com/member.php?u=332825
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| | MSN Encarta - Multimedia - Ring Nebula |
| | Planetary nebulas form around stars that expelled their outer layers during the transition from red giant to white dwarf late in their lifetimes. | | | The ring nebula is a planetary nebula in the constellation Lyra, approximately 4,100 light-years from Earth. |
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http://encarta.msn.com/media_1201500192/Ring_Nebula.html
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| | Ring Nebula |
| | We were looking for the ring nebula last night in Lyra and we found something that we didnt know what it was. | | | I never did find what I was positivly sure was the nebula. | | | My telescope is a 152mm and we were uaing a 9mm eyepeice. |
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http://www.madsci.org/posts/archives/1998-08/902354583.As.q.html
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