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Topic: Messier Object 13

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List of Messier objects

Messier 4

M13

Messier 8

Beehive Cluster

Messier 65

M95

M57

Orion Nebula

M66

Messier 20

Pleiades (star cluster)

M31

Crab Nebula

M96 group

	Sea and Sky's Astronomy Resources: Messier Objects M101 - M110
		M101 is a bright object with a magnitude of 7.9.
		It is the first object in the catalog that was not included in the original publication.
		The last object in the Messier catalog is an elliptical galaxy in the constellation of Andromeda.
	www.seasky.org /astronomy/astronomy_messier_101to110.html (898 words)

	Messier Object 3
		Messier 3 is one of the most outstanding globular clusters, containing an estimated half million stars.
		At that time it was the 76th deep sky object ever observed by human eyes (and apparatus), although at that time, it was only the 55th known nebulous object, while 21 objects had been forgotten again, according to the sources and current knowledge of the present author (see the Deep Sky Object Discovery Table).
		Alternatively, Messier may have started this endeavor due to other reasons, and it was just his first discovery - anyway, the search which started with M3 lead him to catalog the objects up to M40 during this year 1764.
	www.obspm.fr /messier/m/m003.html (896 words)

	Messier Object 1
		It was the discovery of this object which caused Charles Messier to begin with the compilation of his catalog.
		It was also the discovery of this object, which closely resembled a comet (1758 De la Nux, C/1758 K1) in his small refracting telescope, which brought him to the idea to search for comets with telescopes (see his note).
		Although Messier's catalog was primarily compiled for preventing confusion of these objects with comets, M1 was again confused with comet Halley on the occasion of that comet's second predicted return in 1835.
	www.maa.agleia.de /Messier/E/m001.html (2040 words)

	Charles Messier
		Messier as loyal employee stated: "I was a loyal servant of M. Delisle, I lived with him in his house, and I conformed with his command." When Delisle finally announced the discovery on April 1, 1759, it was not believed by the other French astronomers (perhaps they took it as an April Fool's joke).
		The Messier catalog was finally corrected by identifying at least 3 of the 4 missing objects, and brought into its current state by adding the late discoveries of Messier and Mechain, M104--M109, plus the non-cataloged discovery M110, only in the 20th century.
		Messier was appointed as associate editor of the Connaissance des Temps in 1785, and hold this post for five years until 1790.
	www.messiermarathon.com /about.htm (3313 words)

	Monthly Messier List
		This month highlights 10 Messier objects, most are within reach of binoculars, and over half can be seen with the naked eye.
		Nearly all of the objects this month are possible in binoculars, though most need dark skies, averted vision, and a trained eye to see.
		M3 - This globular cluster in Canes Venatici is one of the brightest objects in the sky.
	mistal2.tripod.com /id12.html (6518 words)

	The Messier Catalog : Starshine.com (Site not responding. Last check: 2007-10-14)
		Messier was interested in finding comets, and this list catalogs objects that proved not to be comets.
		One of the most scrutinized objects in the sky, M1 is one of the strongest radio and X-ray sources.
		Due to Messier recording it at a location 4 degrees away, it was considered "missing" for long time until his descriptions were paired up with the object NGC2548.
	www.starshine.com /blueshift/astronomy/messier.asp (4931 words)

	SPACE.com -- Spacewatch Friday: Charles Messier, the 'M' Behind M13 and Other Objects
		Messier was deeply interested in discovering comets, but he was plagued by the same trouble that besets all comet hunters: He kept finding "comets" that were not comets at all but only star clusters and nebulae.
		The 13 comets that Messier discovered and of which he was so proud of are long gone from the inner solar system and forgotten now.
		It has been written by many that Messier had consummate skill in making astronomical observations, even though by contemporary standards the telescopes he utilized were inefficient and crude (that fact is made obvious by his description of the Great Cluster in Hercules).
	www.space.com /spacewatch/messier_13_020816.html (1045 words)

	Sea and Sky's Astronomy Resources: Messier Objects M61 - M70
		Messier originally mistook this object for a comet.
		At magnitude 6.5, this is a bright object that can easily be found with a par of binoculars.
		In fact, Messier originally missed this object when he looked for it in 1764 but later found it with a better telescope in 1780.
	www.seasky.org /astronomy/astronomy_messier_61to70.html (990 words)

	Messier Object 61 (Site not responding. Last check: 2007-10-14)
		Messier mistook it 2 times more until he realized that it did not move.
		As for a small number of others, this object was assigned an own number, H I.139, by William Herschel, who normally avoided to give own numbers to Messier's objects.
		M61 is one of the larger galaxies in the Virgo cluster; its 6 arc minutes of diameter correspond to about 100,000 light years, similar to the diameter of the Milky Way galaxy.
	www2.arnes.si /~gljsentvid10/messier/M061.HTM (187 words)

	Binocular Messier Club - Appendix C (Site not responding. Last check: 2007-10-14)
		Appendix C: Appendix C is for reference purposes, listing all 110 of the Messier objects at the times when they are best observed, and in constellation sequence.
		So, if you are wondering what is the best time of the year to observe a Messier object, refer to Appendix C. Appendix C tells you which season to observe each object, each object's coordinates, their NGC numbers, the constellation they are located in, and their sizes and magnitudes.
		Also, Appendix C lists all of the Messier objects in the exact same order as the Astronomical League's Observe manual "Observe: A Guide to the Messier Objects", in case you are using that as an observing aide.
	www.astroleague.org /al/obsclubs/binomess/binomesc.html (130 words)

	Michigan Messier Madness.
		Some objects are just too beautiful to run past and I find myself stopping by the starry road to take in the sights.
		M35 is one of the first objects that beginners locate on their own probably due to its ease of locating it, but what makes this cluster stand out for me is the adjacent faint open cluster NGC 2158 one half degree away from M35.
		Approach each Messier object as I would a work of art and appreciate it for what it is. With some luck I will continue to be disappointed by Michigan skies in March and be allowed to walk through Messier’s catalog at a pace that allows me to appreciate each object in my own way.
	www.umich.edu /~lowbrows/reflections/2002/csarnecki.9.html (1753 words)

	Cosmic Voyage-The Online Resource for Amateur Astronomers (Site not responding. Last check: 2007-10-14)
		I observed all 110 Messier objects on back-to-back nights, March 23-24 and 24-25, 2001, at the All-Arizona Messier Marathon.
		A Messier Marathon is a sprint from object to object.
		M55 is at a southerly declination and is a difficult morning object for observers at latitudes of 40 degrees north or higher.
	members.aol.com /billferris/marathon2.html (667 words)

	Messier Object 13
		M13, also called the `Great globular cluster in Hercules', is one of the most prominent and best known globulars of the Northern celestial hemisphere.
		It was discovered by Edmond Halley in 1714, who noted that `it shows itself to the naked eye when the sky is serene and the Moon absent.' According to Charles Messier, who cataloged it on June 1, 1764, it is also reported in John Bevis' "English" Celestial Atlas.
		At its distance of 25,100 light years, its angular diameter of 20' corresponds to a linear 145 light years - visually, it is perhaps 13' large.
	www.seds.org /messier/m/m013.html (335 words)

	Messier object - Wikipedia, the free encyclopedia
		The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774.
		The original motivation behind the catalogue was that Messier was a comet hunter, and was frustrated by objects which resembled but were not comets.
		Because all of the Messier objects are visible with binoculars or small telescopes (under favorable conditions), they are popular viewing objects for amateur astronomers.
	en.wikipedia.org /wiki/Messier_object (232 words)

	Astronomy & Space
		Messier's Objects You are the visitor number from September, 12 1996.
		Messier Objects Charles Messier (1730-1817) Published in 1781, Charles Messier, the French astronomer, made a list of 103 "fuzzy-looking" objects that might be mistaken for comets.
		Charles Messier (1730-1817) Charles Messier, was a French Astronomer whose work on the discovery of comets led to the compilation of the Messier Catalogue of nebulae and star clusters.
	groups.msn.com /AstronomySpace/messierobjects.msnw (973 words)

	The Astronomy Connection - June Messier Tour
		We will be hunting 13 galaxies all within less than 100 square degrees of sky.
		Successfully navigating the Virgo cluster is the biggest challenge in the Messier Catalogue, and is affectionately known as "Heartbreak Ridge" to marathoners.
		What makes the Virgo cluster such a challenge is the closeness of the Messier objects to each other, and the large number of other galaxies in this region.
	observers.org /observing/m-jun.html (836 words)

	Dave's Astronomy Pictures - Deep Sky: Star Clusters
		They are compact objects with the stars tightly packed, although some stars in the cluster form a halo around the core of the object, giving globular clusters the appearance of a fuzzy star under low magnification.
		Messier object 56 is a globular cluster in the constellation of Lyra, located between the famous double star in Cygnus, Albireo, and the most well-known of the planetary nebulae, the Ring nebula M57.
		Messier 15 is another globular cluster, this time in the constellation of Pegasus.
	www.davesastro.co.uk /dso/clusters.html (2079 words)

	Timeline of Charles Messier
		His first own deep sky discovery of globular cluster M3, cataloged on May 3, probably causes him to undertake a systematical search for nebulous objects, leading to the observation and recording of the objects M3 M40 many of which were own discoveries, but several from old catalogs.
		Messier was made a member of the Royal Society of London;
		Herschel discovered Uranus on March 13, Messier got the note in April and observed it since.
	www.astrosurf.com /re/messier2.html (594 words)

	Space Today Online - Deep Space - Messier Objects Stars Clusters Supernovas Nebulas Galaxies
		In the 1960s, astronomers came across some extremely bright, very small objects that apparently are as far away as an object can be across the Universe.
		From 1758 to 1782, the French astronomer Charles Messier cataloged 110 celestial objects that he worried might be mistaken for comets.
		An asterism is a group of stars that appear to form a visual symbol in the night sky, but also are part of a constellation, which itself is a visual symbol in the night sky.
	www.spacetoday.org /DeepSpace/Stars/MessierObjects/MessierObjects.html (3683 words)

	Phil Plait's Bad Astronomy: Bitesize Astronomy (Site not responding. Last check: 2007-10-14)
		Messier was not the person to first see the now-famous comet's return, but an interesting happened during the search.
		The irony of all this is that he managed to catalogue the brightest and most beautiful objects in the sky, the ones easiest to see and most sought after by beginning amateur astronomers...
		Messier was famous in his time as a careful observer, but I wonder if he could have known how his fame would endure.
	www.badastronomy.com /bitesize/messier.html (678 words)

	boyruageek » Messier Object (Site not responding. Last check: 2007-10-14)
		Aiming at a dark spot in the sky, to center a bright object, is difficult because you can’t see the alignment squares in the viewfinder - they are fl, the sky is fl and it’s dark outside.
		The picture to the left was taken in mid-November 2005 of Messier Object 2 with a Canon EOS 350D and a 10” Meade LX 200 at prime focus (f/10) from my backyard in Northeast Ohio.
		It was the first planetary nebula discovered and recorded by Charles Messier in 1764.“The central star of M27 is quite bright at mag 13.5, and an extremely hot blueish subdwarf dwarf at about 85,000 K (so the spectral type is given as O7 in the Sky Catalog 2000).
	www.boyruageek.com /?cat=29 (2134 words)

	Messier object concept from the Astronomy knowledge base (Site not responding. Last check: 2007-10-14)
		(13 facts) (M 1, Taurus A, 2U 0531+22) - A supernova remnant., A chaotic, expanding mass of gas in Taurus, the remnant of a Type I supernova whose light reached Earth in 1054.
		(13 facts) (M 42) - A large cloud of gas and dust giving birth to young stars in the constellation Orion and visible to the naked eye.
		It is an HII region 1500 light-years away., An HII region about 500 pc distant, barely visible to the naked eye in the center of Orion's sword.
	www.site.uottawa.ca:4321 /astronomy/Messierobject.html (719 words)

	Charles Messier (June 26, 1730 - April 12, 1817)
		The celebrated French astronomer Charles Messier became famous in his lifetime for the discovery of 20 comets, 13 of which were original discoveries which were (and are still) credited to him.
		It was cropped from a chart drawn by Messier, and shows the central part of the Virgo Cluster of Galaxies which Messier thought to be a cluster of nebulae.
		The Charles Messier history section of our site has been awarded by Britannica.com as one of the best sites on the Internet when reviewed for quality, accuracy of content, presentation and usability, and rated as a Recommended Site.
	messier.obspm.fr /xtra/history/CMessier.html (358 words)

	M48
		Messier object M48 is a open cluster which is located in the constellation Hydra.
		It is a relatively close member of Messier's catalog located 2 thousand light years from earth.
		M48 is unnamed and has an NGC catalog number of NGC 2548.
	www.absoluteastronomy.com /messier_objects/m48.htm (70 words)

	Messier Object 22
		This globular was included in Halley's list of 6 objects published 1715, and observed by De Chéseaux (his No. 17) and Le Gentil as well as by Abbe Nicholas Louis de la Caille, who included it in his catalog of southern objects as Lacaille I.12.
		Charles Messier, who cataloged M22 on June 5, 1764, states that it is also included in John Bevis' English Atlas.
		Recent Hubble Space Telescope investigations of M22 have led to the discovery of a considerable number of planet-sized objects which appear to float through this globular cluster; these objects may have masses of only 80 times that of Earth, and were discovered by so-called micro lensing effects, i.e.
	www.maa.agleia.de /Messier/E/m022.html (369 words)

	M71
		Messier object M71 is a globular cluster which is located in the constellation Sagitta.
		It is a relatively close member of Messier's catalog located 13 thousand light years from earth.
		M71 is unnamed and has an NGC catalog number of NGC 6838.
	www.absoluteastronomy.com /messier_objects/m71.htm (70 words)

	Amazon.com: The Next Step: Finding and Viewing Messier's Objects: Books: Ken Graun (Site not responding. Last check: 2007-10-14)
		Today, Messier’s catalogue is often the first set of Deep Sky Objects observed by budding amateurs wanting to go beyond viewing the Moon, Planets and Sun.
		Messier would be so proud, and of course so surprised at how his little atlas of things to avoid became a timeless reference.
		Messier was and his history, a comprehensive glossary and a reproducable observing log for each object.
	www.amazon.com /Next-Step-Finding-Messiers-Objects/dp/1928771122 (1405 words)

	Messier Marathon (Site not responding. Last check: 2007-10-14)
		For objects which I was unable to locate manually, I used my LX-200's computer to automatically slew to them so that I could at least see each Messier object before morning.
		Beyond that, the computer was used to find some of the Coma/Virgo objects for which I ran out of steam and/or time, and for a few dim objects near the end of the list which were too difficult for my manual search in the morning glow.
		In addition to seeing most of the Messier objects that night, the night also included two views of comet Hale-Bopp; once as an evening object, and then again in the morning.
	observers.org /reports/97.03.08.3.html (484 words)

	Messier Object 31
		Charles Messier, who cataloged it on August 3, 1764, was obviously unaware of this early reports, and ascribed its discovery to Simon Marius, who was the first to give a telescopic description in 1612, but (according to R.H. Allen) didn't claim its discovery.
		Edmond Halley, however, in his 1716 treat of "Nebulae", accounts the discovery of this "nebula" to the French astronomer Bullialdus (Ismail Bouillaud), who observed it in 1661; but Bullialdus mentions that it had been seen 150 years earlier (in the early 1500s) by some anonymous astronomer (R.H. Allen, 1899/1963).
		Some of the features mentioned above are also of interest for the amateur: Even Charles Messier found its two brightest companions, M32 and M110 which are visible in binoculars and conspicuous in small telescopes, and created a drawing of all three.
	www.maa.agleia.de /Messier/E/m031.html (1538 words)

	Messier Object 107
		M107 is another additional object found by Pierre Méchain in April, 1782.
		Eventually, Helen Sawyer Hogg added it to the Messier Catalog in 1947, together with M105 and M106, although it appears probable that already Méchain had intended to add it to a future edition of Charles Messier's list.
		William Herschel, who had independently discovered it on May 12, 1793, cataloged this object as H VI.40; Herschel was the first observer to resolve this globular cluster into stars.
	www.obspm.fr /messier/m/m107.html (231 words)

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