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Topic: NGC 6121

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	IAAC Observations Matching Your Criteria
		(IAAC) Obj: NGC 6318 - Inst: Orion 6" Dob
		(IAAC) Obj: SN 1999by in NGC 2841 - Inst: Meade LX10 8" SCT
		(IAAC) Obj: NGC 6121 - Inst: Orion 6" Dob
	www.visualdeepsky.org /search.cgi?catalogs=NGC&ids=6121 (12507 words)

	New General Catalogue - InfoSearchPoint.com (Site not responding. Last check: 2007-09-16)
		NGC 2346 - a planetary nebula in the Monoceros constellation
		NGC 5866 - A lenticular galaxy in the Draco constellation
		NGC 6121 - M4, a globular cluster in the Scorpius constellation
	www.infosearchpoint.com /display/NGC (344 words)

	* M8 - (Astronomy): Definition (Site not responding. Last check: 2007-09-16)
		M8 (NGC 6523) is a marvellous diffuse nebula known as the "Lagoon Nebula".
		M8 (NGC 6523) The famous Lagoon nebula is about 1 degree in size, visible to the naked eye and a good object for binocular viewing...
		The Hourglass Nebula (NGC 6523) in M8 planetary nebula is a nebula formed from by a shell of gas which was ejected from a certain kind of extremely hot star (a red giant or supergiant)...
	www.mimihu.com /astronomy/m8.html (491 words)

	Deepsky observing report M16, M17, M18, M24, M22, M8, M11, IC 4756, NGC 6633, NGC 253, NGC 247, NGC 188, NGC 891
		This beautiful object, a combination of an emission nebula (NGC 6618) and open cluster (also NGC 6618), was discovered by Chesaux in the spring of 1746, before it was rediscovered by Messier in June of the same year.
		NGC 253 is 30′x 7′, with a visual magnitude of 7.6 and a surface brightness of 13.2.
		NGC 891 lies inside this trapezoid, just to the northwest of the most eastern star (on the image below, South is up and West is to the Left).
	www.backyard-astro.com /deepsky/2003_09_26/ITT.html (2672 words)

	DOC NGC 6121 Messier 4 (Site not responding. Last check: 2007-09-16)
		NGC 6121 (M4) just shows some traces of resolution.
		NGC 6144, its smaller neighbour, is a small hazy spot north of the line joining Antares and M4.
		Rather untidy, more tidy than NGC 6193, but not as tidy as Omega Cen." Then, in September 1984, I wrote: "Re-observed this interesting object with the mirror re-silvered.
	www.saao.ac.za /assa/html/doc_ngc_6121_messier_4.html (1351 words)

	Catalogue des nébuleuses et amas d'étoiles de Charles Messier
		Le petit amas NGC 2026 se trouve à 2,7° SE et l'amas NGC 1802 à 6° ONO.
		NGC 206, qui se trouve à environ 40' SO du noyau, est également très brillant.
		La nébuleuse NGC 2438 est une nébuleuse planétaire qui apparaît en surimpression devant l'amas.
	www3.sympatico.ca /gervais.chouinard/messier.htm (4475 words)

	NGC 6121 - M4
		M4 is possibly the closest globular cluster to the earth, at a distance of
		Observation: Visible in 7 x 50 mm binoculars under dark skies as a large faint disk, brightening slightly towards the centre.
		Although NGC 6121 lacks a bright core like that of NGC 5139, it is nevertheless unmistakable.
	www.peripatus.gen.nz /Astronomy/NGC6121.html (158 words)

	* M80 - (Astronomy): Definition (Site not responding. Last check: 2007-09-16)
		This cluster has a diameter of around 90 light years and is located roughly 36,000 light years from the Earth...
		M80 (NGC 6093) is a rather faint, very compact, globular cluster in the vicinity of Antares, between this star and beta Scorpii, and more narrowly speaking,...
		6 13.2 1.7 16.5 Palomar 14 16 11 00 +14 57.8 14.7: 17.6 1.3 20.0 NGC 6093 = M80 16 17 03 -22 58.5 4.5 10 7.3 12.5 1.8 15.6 NGC 6121 = M4 16 23 36 -26 31...
	www.mimihu.com /astronomy/m80.html (246 words)

	Messier Object 4
		Globular Cluster M4 (NGC 6121), class IX, in Scorpius
		Nearby (50' to the ENE) and even closer to Antares (only 30' NW), fainter globular cluster NGC 6144 (mag 10.4, 3.3' diamter) can be found; to observe it, Antares should be excluded from the field of view so that it cannot shine out that faint globular.
		Dust clouds and nebulae around Rho Ophiuchi near Antares and M4; material of these clouds is obscuring the cluster.
	www.seds.org /messier/m/m004.html (788 words)

	[No title]
		Abstract The stellar content of the cores of the globular clusters NGC 6121 and NGC 6397 will be determined using the WFC.
		Of special interest will be the observed numbers of white dwarfs, the other ultra-violet excess stars, and the faint red dwarfs.
		The stellar content of the cores of the globular clusters NGC 6121 and NGC 6397 will be determined using the WFC.
	ecf.hq.eso.org /poa/FOS/props/1017c.pro (644 words)

	Southern Sky Telescopic Club - The List
		[ ] NGC 2070 Dor 05h 38.7 m -69° 06' 8.2 40 ' OC + Neb In the LMC, The Tarantula
		[ ] NGC 1399 cluster For 03h 38.5 m -35° 27' 9.9 3.2x3.1 ' Galaxy Fornax Gal.
		[ ] NGC 5986 Lup 15h 46.1 m -37° 47' 7.6 9 ' GC [ ] NGC 6121 Sco 16h 23.6 m -26° 32' 5.4 30 ' GC [ ] NGC 6231 Sco 16h 54.2 m -41° 49' 2.6 14 ' OC + Neb
	www.astroleague.org /al/obsclubs/southsky/sskylist.htm (1158 words)

	[No title]
		end of coverpage abstract: line_1: The stellar content of the cores of the globular clusters NGC 6121 and NGC line_2: 6397 will be determined using the WFC.
		Of special interest will be the line_3: observed numbers of white dwarfs, the other ultra-violet excess stars, and line_4: the faint red dwarfs.
		question: 13 section: 1 line_1: The stellar content of the cores of the globular clusters NGC 6121 and NGC line_2: 6397 will be determined using the WFC.
	ecf.hq.eso.org /poa/FOS/props/1017c.prop (739 words)

	[No title] (Site not responding. Last check: 2007-09-16)
		Time should be ~19:45 (sid time 08:57) NGC 3201: Target is Globular Cluster (extended object).
		Time should be ~21:45 (sid time 10:57) NGC 4833: Target is Globular Cluster (extended object).
		Time should be ~00:30 (sid time 13:42) NGC 6121: Target is Globular Cluster (extended object).
	www.ess.sunysb.edu /fwalter/SMARTS/2004A/s15m040418.plan (1271 words)

	Sco - Scorpius
		6072, 6093, 6121, 6124, 6139, 6144, 6153, 6178, 6192, 6222, 6231, 6242, 6259, 6268, 6281, 6302, 6318, 6322, 6334, 6335, 6357, 6383, 6388, 6400, 6404, 6405, 6416, 6425, 6441, 6451, 6453, 6475, 6496,
		M 6 - NGC 6405 - Butterfly (Sco)
		Cluster, large, irregularly round, loosely compressed, stars from 7th to 10th magnitude.
	mypage.bluewin.ch /horo/ngc/sco.htm (378 words)

	Spring 2000--Cousin Ricky's Astronomy Logs
		As best as I can determine, the nebulosity (NGC 6523) is too dim for the naked eye.
		I had NGC 4976 and NGC 4945 written down and then crossed out for this Date.
		During the search, I ran across what looked like open clusters, but I could only find galaxies NGC 4976 and NGC 4945 in the references I had.
	cac.uvi.edu /staff/rc3/astro/logs/log00b.html (623 words)

	(IAAC) Obj: M4 (NGC 6121) - Inst: 10-inch, f/4.5, Dobsonian (Site not responding. Last check: 2007-09-16)
		(IAAC) Obj: M4 (NGC 6121) - Inst: 10-inch, f/4.5, Dobsonian
		Subject: (IAAC) Obj: M4 (NGC 6121) - Inst: 10-inch, f/4.5, Dobsonian
		Prev: (IAAC) Obj: M80 (NGC 6093) - Inst: 10-inch, f/4.5, Dobsonian
	www.visualdeepsky.org /logs/msg03212.html (205 words)

	(IAAC) Obj: M4 (NGC 6121) - Inst: 4.5" f/8 equatorial reflector (Site not responding. Last check: 2007-09-16)
		(IAAC) Obj: M4 (NGC 6121) - Inst: 4.5" f/8 equatorial reflector
		Subject: (IAAC) Obj: M4 (NGC 6121) - Inst: 4.5" f/8 equatorial reflector
		Class: loose Constellation: Sco Data: mag 5.9 size 26" Position: RA 16:24 DEC -26:32 Description: After 5 cloudy weeks, I found an opportunity to have a look to sky.
	www.visualdeepsky.org /logs/msg01455.html (140 words)

	[No title] (Site not responding. Last check: 2007-09-16)
		OriNTT 429 A + -9.999 5450 -99 4.00 -9.99 -0.43 -9.99 Lee 1994AJ....108.1445L NGC 1977 & Orion cluster ?
		NGC 3201 4524b + -9.999 KIIvw 4000 100 -0.50 0.30 -1.67 0.09 Gonzal 1998AJ....116..765G NGC 3201 ?
		Cl* NGC 3201 CWFD 3-9d + -9.999 4600 100 1.90 0.30 -1.18 0.09 Gonzal 1998AJ....116..765G NGC 3532 CPD -58 3031 11 04 50.1110 -58 43 03.970 7.94 K5III...
	xml.gsfc.nasa.gov /pub/adc/xml_archives/catalogs/3/3221/3221_table2.dat (514 words)

	Milky Way Globular Clusters
		Note: This list includes the four globulars which are probably genuine members of the Sagittarius Dwarf Elliptical Galaxy (SagDEG), namely, M 54, Arp 2, Terzan 7 and Terzan 8.
		NGC 1466 Hyi 03:44.5 -71:41 179: 11.4 1.9 Webbink 1985; in LMC Reticulum Glob.
		Ret 04:36.2 -58:52 179: 14.25 1.7 Webbink 1985, Djorgovsky/Meylan 1993; in LMC NGC 1841 Men 04:45.
	www.seds.org /~spider/spider/MWGC/mwgc.html (545 words)

	Catalog of NGC Images
		The following links access a wide variety of NGC Catalog deep space objects.
		Many of these images are copyrighted and must not be copied into your machines without permission of the owner.
		Some of these images are quite large and may take a long time to transmit.
	www.frostydrew.org /transfer/fullngc.htm (60 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations (Site not responding. Last check: 2007-09-16)
		Energy Citations Database (ECD) Document #5786791 - UBV photometry of RR Lyrae variables in the globular cluster NGC 6121 (M4)
		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.
		UBV photometry of RR Lyrae variables in the globular cluster NGC 6121 (M4)
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=5786791 (118 words)

	Identification and coordinates of variable stars in the globular cluster M 4 = NGC 6121. (Site not responding. Last check: 2007-09-16)
		Identification and coordinates of variable stars in the globular cluster M 4 = NGC 6121.
		Accurate equatorial coordinates have been determined for 54 variable stars in the globular cluster M 4=NGC 6121.
		; Cl* NGC 6121 SAW VNN in Simbad ANNNN: Number from Alcaino, G., 1975AandAS...21....5A; Cl* NGC 6121 Alc NNN in Simbad LNNNN: Number from Lee, S.-W., 1977AandAS...27..367L
	www.cs.wisc.edu /niagara/data/nasa/PAZh_22_847.xml (107 words)

	nebulae and star clusters
		• Double Cluster (h and Chi Persei; NGC 869 and NGC 884)
		• Little Dumbbell Nebula (M76, NGC 650 and 651)
		Veil Nebula (NGC 6960, NGC 6979, NGC 6992/5)
	www.daviddarling.info /encyclopedia/N/nebulae_and_star_clusters.html (105 words)

	M4 NGC 6121 (Site not responding. Last check: 2007-09-16)
		Being situated less than 2 degrees west of the bright star Antares (just out of the top left-hand edge of the photograph) it is easy to find.
		Near the top right of the photograph is the star sigma scorpii, while near the top left is the small globular cluster NGC 6144.
		This is an easy object of an 8" telescope.
	www.montgomerycollege.edu /faculty/~mclark/public_html/m4.htm (98 words)

	DOC: Uranometria chart 336
		FEATURED OBJECTS: NGC 6093 (Ben 73), LDN 1669, LDN 1711, IC 4601, NGC 6121 (Ben 75), IC 4603, IC 4604, Grasdalen 1, ESO517-SC004, NGC 6144 (Ben 77), LDN 1774, LDN 1691, LDN 1747, LDN 1707, LDN 1738.
		A 6-inch shows this star and a faint patch of haze and an 8-inch gives the beginnings of resolution.”
		John Callender, 8-inch Dobsonian: “I believe I caught a few glimpses of this 10th magnitude globular at 49x using averted vision.
	www.fortunecity.com /roswell/borley/49/u336.htm (2020 words)

	The Messier Catalog
		Larger than M59, it has the same magnitude.
		This is not a twin nebula; the other nebula in the field is a close spiral companion, NGC 4647.
		There is bright center in this faint spiral, but it still requires the light-gathering power of large aperture (8 to 10) to be seen clearly.
	www.lsus.edu /nonprofit/sbas/messier.htm (3176 words)

	Globular Cluster M4 -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-09-16)
		Globular Cluster M4 -- Facts, Info, and Encyclopedia article
		Globular Cluster M4 [Categories: Scorpius constellation, NGC objects, Messier objects, Globular clusters]
		Globular Cluster M4 (also known as Messier Object 4, Messier 4, M4, or NGC 6121) is a (additional info and facts about globular cluster) globular cluster in the (additional info and facts about Scorpius constellation) Scorpius constellation.
	www.absoluteastronomy.com /Encyclopedia/G/Gl/Globular_Cluster_M4.htm (68 words)

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