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	Rasalgethi (Site not responding. Last check: 2007-11-01)
		Rather oddly, Rasalgethi, the Alpha star, is the fifth brightest, perhaps because it is a bit south of the main constellation pattern.
		Rasalgethi is a complex multiple star that through the telescope has a fifth magnitude companion five seconds of arc away (Alpha-2, rendering Rasalgethi proper Alpha-1).
		Rasalgethi appears to be losing mass at a rate of about a ten-millionth of a solar mass per year, hardly a record, but substantial enough, consistent with its being a highly distended supergiant.
	www.astro.uiuc.edu /~kaler/sow/rasalgethi.html (477 words)

	Heroic Stars
		As befits Hercules, Rasalgethi is one of the grand red giants of the naked-eye sky.
		Rasalgethi (which began life near 8 solar masses) is now in the process of removing its outer layers as it prepares to become a solar mass white dwarf like Sirius B (a star shrunk to the size of Earth with an average density of a ton in a sugar cube).
		About the same distance as Rasalgethi, but slightly redder (class M6), cooler (3000 K), less luminous (4000 Suns), and smaller ("only" about the size of Earth's orbit), 30 Her is a noted "semi-regular variable" rather like its bigger cousin, but with a well defined period of 89 days.
	www.astro.uiuc.edu /~kaler/sow/heroic.html (1192 words)

	Rasalgethi
		The star Rasalgethi (Scientific Name Alpha Herculis) is located at right ascension 17h 14.648m and declination 14° 23.417'.
		Rasalgethi is a relatively dim star with a magnitude of 3.48.
		It has an Hd number of 156014, an FK5 number of -, and a SAO number of 102680.
	www.absoluteastronomy.com /stars/rasalgethi.htm (55 words)

	Short Eye Relief Eyepieces Usable with Glasses
		I was out viewing a fairly close double star, Rasalgethi - a Her (3.0-5.4/4.6") recording the view in various eyepieces, looking for the upper and lower limits of magnification necessary for an acceptable view.
		However, several times I looked up from my note-taking with my glasses still on and noticed I could easily view through the eyepieces from a distance away from the lens.
		I could see the separation and color of the components in Rasalgethi just fine through every one of the high power eyepieces.
	www.cloudynights.com /item.php?item_id=513 (1138 words)

	Gerald de Jong's Avatars98 Transcript
		Strucky: eventually, there will have to be things that resemble "higher brain activity" but we hope to integrate that into the structures themselve as a sort of message passing network.
		"Rasalgethi": Randomness is useful in the Primordial Soup for diversity
		"Rasalgethi": Sorry, but I must go now, My neurons are crashing now after the experience of bi-discussion...
	www.ccon.org /conf98/report/struckreport.html (5066 words)

	Binocular Astronomy(Her-Lyr)N
		Most old depictions of Hercules show him, for some reason, upside down; so it comes as no surprise to learn that the name of its leader, Rasalgethi, means "head of the kneeler" even though it lies at the foot of the constellation.
		Another bright group, on the other side of Rasalgethi, that includes the small-range red variable V640.
		This star used to be part of a now-redundant constellation called Ramus Pomifer, the apple branch, no doubt depicting the Apples of the Hesperides that our hero went in search of.
	ourworld.compuserve.com /homepages/silmerina/HER-LYR.htm (2137 words)

	Obs_year
		Hercules : is rather like a poor copy of Orion in outline, but with no stars brighter than mag.2.8.
		Rasalgethi (alpha-Herculis) is a variable (discovered by William Herschel in 1795) which ranges between mag.
		It is a red supergiant semi-regular variable with a period of 90 to 100 days, although it spends most of its time between mag.
	www.thomson.u-net.com /obs_year.htm (2161 words)

	Merrimac Observatory Information
		The 20-inch Ritchey-Cretien reflector telescope has been remounted on a Paramount ME computer-controlled mount and offers excellent views of both deep sky and solar system objects.
		We will observe Vega (the brightest summer star), along with some double stars such as Rasalgethi, Albireo, and Mizar.
		We will have nice views of globular clusters such as M13 in Hercules, planetary nebula such as the Ring Nebula in Lyra (M57), and the beautiful Andromeda galaxy, M31.
	www.nsaac.org /merrimack.shtml (180 words)

	What’s Up - 365 Days of Skywatching » Wednesday, July 12, 2006 (Site not responding. Last check: 2007-11-01)
		Tonight as Selene forecasts its brilliant rise to the south-southeast, let’s have a look at 400 light-year distant Rasalgethi - Alpha Herculis.
		Its photospheric temperature is so low at 3000 degrees Kelvin that it barely glows a warm “red-orange.” Meanwhile, its 5.4 magnitude companion is a yellow giant with a temperature twice the primary.
		The two together make Rasalgethi A seem a deeper red while Rasalgethi B takes on a lovely yellow/green hue.
	www.astrowhatsup.com /2006/07/12/wednesday-july-12-2006 (242 words)

	The Dispatch (Site not responding. Last check: 2007-11-01)
		The star that represents the head of Hercules rises below his body.
		It's called Rasalgethi, and it actually consists of three individual stars.
		Look for it clearing the northeastern horizon in late evening.
	www.gilroydispatch.com /printer/article.asp?c=151592 (386 words)

	Colorful Double Stars for the ST80
		This star is in Orion’s belt area and is on one edge of Cr 70 which is an Open Cluster of about 150 minutes in size and only a scope like the ST80 can see all of Cr 70.
		I’ll finish this introductory list with my favorite double for the ST80, Rasalgethi (3.5,5.4) in Hercules.
		Besides a very striking contrast this double looks best at about 100X and at this power the stars turn into round balls of color where at lower powers the stars look more like sparklers.
	www.cloudynights.com /item.php?item_id=1201 (621 words)

	Astromart Reviews - Orion’s Explorer 90mm Altazimuth Refractor
		On Saturn it shows the rings and some surface detail.
		At 150X to 180X I have received nice views of the Double Double in Lyra, Izar in Bootes, Rasalgethi in Hercules and at about 100X, Almach in Andromeda.
		It also gives nice views of the Orion Nebula, the Ring Nebula, and the Dumbbell Nebula.
	www.astromart.com /articles/article.asp?article_id=165 (501 words)

	All Sky Camera
		On the left you can see the dome which is toward the East.
		Down and to the right of the dome is a triangle of 3 bright stars (from left to right) they are; Altair, Vega and Rasalgethi.
		You can also see the Milky Way running thru the triangle.
	www.jatobservatory.org /Galleries/MeteorCam/MeteorCam.html (1035 words)

	G.06 Which nearby stars might become supernovae? (Site not responding. Last check: 2007-11-01)
		Next Document: G.07 What will happen on Earth if a nearby star explodes?
		Obvious candidates are alpha Orionis (Betelgeuse, M1-2 Ia-Iab), alpha Scorpii (Antares, M1.5 Iab-Ib), and alpha Herculis (Rasalgethi, M5 Ib-II).
		Spectral types come from the Bright Star Catalog.
	www.faqs.org /faqs/astronomy/faq/part7/section-11.html (197 words)

	SPACE-TALK - Binaries that have good color contrast
		SPACE-TALK - Binaries that have good color contrast
		I know the obvious ones like Albireo, Gamma And, Rasalgethi, etc.
		But is there a really <> list of fainter ones with strong color?
	www.space-talk.com /ForumE/showthread.php3?postid=31430 (82 words)

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