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	AN HISTORICAL TOUR OF CAMPUS Observatory (Site not responding. Last check: 2007-10-08)
		Alvan Clark and Sons, of Cambridgeport, Mass., are the makers of the principal telescope...The entire cost of the telescope placed in the observatory and ready for use, is to be $2,700.
		Alvan Clark and Sons firm, of Cambridge, Massachusetts, the makers of the primary telescope, were probably the most highly regarded American telescope builders of the nineteenth century.
		Alvan Clark's sense of touch was said to be so sensitive that even when a lens appeared perfect to the eye, his fingers could still detect slight irregularities.
	www.albion.edu /library/specialcollections/observatory_history.asp (2336 words)

	Alvan Clark - Wikipedia, the free encyclopedia
		Alvan Clark (March 8, 1804 – August 19, 1887), born in Ashfield, Massachusetts, was an American astronomer and telescope maker.
		One of Clark's sons, Alvan Graham Clark, discovered the dim companion of Sirius.
		Alvan Clark and Sons, Artists in Optics, by Deborah Jean Warner and Robert B. Ariail, ISBN 0-943396-46-8
	en.wikipedia.org /wiki/Alvan_Clark (154 words)

	AllRefer.com - Alvan Clark (Astronomy, Biography) - Encyclopedia
		Alvan Clark 1804–87, American astronomer and maker of astronomical lenses, b.
		In 1846 the firm of Alvan Clark and Sons was established at Cambridgeport, Mass.; it became famous as the manufacturer of the largest and finest telescope lenses.
		The younger Clark discovered a number of double stars as well as the companion star of Sirius.
	reference.allrefer.com /encyclopedia/C/Clark-Al.html (228 words)

	IAS Orbit Article on the Missing Lens
		Alvan Clark lived in Boston and was by profession an inventor and portrait painter.
		This led to his father becoming interested in optics and eventually to the founding of the firm of Alvan Clark and Sons in 1850.
		Clark reluctantly agreed and sold it to Dawes in March 1854 for $950.
	homepage.eircom.net /~irishas/missing.htm (711 words)

	Alvin Clark Sons: Artists In Optics (Site not responding. Last check: 2007-10-08)
		Alvan Clark and his two sons, George Bassett and Alvan Graham, figured importantly in the great expansion of astronomical facilities which occurred during the second half of the 19th century.
		Five times the Clarks made the objectives for the largest refracting telescopes in the world; and the fifth of their efforts, their 40-inch lens at the Yerkes Observatory, remains to this day the largest working refractor in the world.
		Since Alvan Clark was a successful portrait and miniature painter his known works are also described and catalogued here.
	www.willbell.com /tm/AlvinClark.htm (382 words)

	Clark, Alvan (1804-1887)
		Together with his sons, George Bassett Clark (1827-1891) and Alvan Graham Clark (1832-1897), he founded Alvan Clark & Sons at Cambridgeport, Massachusetts, in 1846, and proceeded five times to make the objectives for the largest refracting telescopes in the world.
		The optical work of Clark & Sons was recognized as unsurpassed anywhere and represented the first significant American contribution to astronomical instrument-making; prior to this, American telescopes had never compared with those of European manufacture.
		Alvan Graham Clark is also remembered particularly for his discovery of the (white dwarf) companion of Sirius in 1862.
	www.daviddarling.info /encyclopedia/C/Clark.html (222 words)

	Alvan Clark
		CLARK, Alvan, optician, born in Ashfield, Massachusetts, 8 March.
		Clark invented numerous improvements in telescopes and their manufacture, including the double eye-piece, an ingenious method of measuring small celestial arcs.
		Clark accompanied the total-eclipse expedition to Jerez, Spain, in 1870, and also the similar expedition to Wyoming in 1878.
	www.famousamericans.net /alvanclark (451 words)

	11/24/03 - SPR News - Clark telescope
		Alvan Clark was a portrait artist in New England in the mid-19th Century.
		Clark had no formal training in optics, but he and his sons worked, making mistakes and learning as they went.
		Warner says the Clarks were notoriously bad about record keeping, so her work has been to document the surviving Clark telescopes, everything from the largest to small scopes used by amateur astronomers of the era.
	www.kpbx.org /news/nov03/WSU_telescope.htm (675 words)

	Dearborn Telescope
		Five times the Clarks made the objectives for the largest refracting telescopes in the world; and the fifth of their efforts, their 40-inch lens at the modern University of Chicago’s Yerkes Observatory, has never been surpassed.
		Alvan watched his son’s experiment with growing enthusiasm and, like any father, could not refrain from giving him the “benefit” of his “maturer judgement”; he then promptly became involved with the construction of telescopes.
		Alvan Clark Senior stayed nearly one month to see his work completed, and then left the instrument in the hands of the new Observatory.
	www.deller.com /newpage6.htm (3590 words)

	UVM's Alvan Clark 9" Refracting Telescope
		It is difficult to overestimate the historical significance of Clark refracting telescopes to the history of astronomy.
		A 4-inch Clark was small enough that it could have been mounted on a portable tripod, and it seems likely that this was the telescope remembered by Timothy Smith.
		The 9-inch Clark refractor came back into use as a result of the interest in astronomy among a group of high school students who had formed the Junior Vermont Astronomical Society in 1968, with Keith Lawrence as president.(6) By 1971, Keith was a student at UVM, and he learned from his physics professor, Dr.
	www.uvm.edu /~jrs/vas/clark.html (1902 words)

	Business and Career Coach Nancy Linnerooth: Coach Tales
		Clark became interested in telescopes, discovered he had an eye for lenses, and built his first telescope (with his two sons) at the age of 40.
		Clark went into the telescope manufacturing business full-time with his sons when he was 54 years old, giving up his portrait studio altogether.
		Clark was also highly successful at crafting and selling smaller scopes which are favorites with collectors today.
	www.nancyl.com /coach-tales/coach-tales1201.php (917 words)

	Your Heading Goes Here
		Alvan Clark and his sons, George and Alvan Graham, were the premier American telescope makers of the late 19th century, probably the finest in the world, and builders of the two largest refractors ever made, the 36" at Lick and the 40" at Yerkes.
		All of the Clarks were dead by the turn of the twentieth century, but the master optician C. R Lundin who had been hired by Alvan Clark in 1874 remained to carry on the tradition of fine optical craftsmanship.
		And then there was the history associated with Alvan Clark and Sons, a name evocative of the heroic era of American technology, master opticians, makers of the world's largest lenses.
	www.cerritos.edu /ladkins/bishop/bishop_history.htm (5307 words)

	Search The University of Arizona
		Restoration of the 5.0-inch Alvan Clark and Sons Refractor...
		The 1996 Clark peak fire in the Pinaleno (Graham) mountains in southeastern Arizona.
		Kenneth N. Clark is Professor of Architecture and Chair of the Interdisciplinary...
	www.arizona.edu /index/super-search.cgi?basic=clark (183 words)

	Stars in Their Eyes (Site not responding. Last check: 2007-10-08)
		But the elder Clark was soon hooked on a new hobby, one at which the established portrait painter apparently excelled.
		His two sons, George Bassett Clark and Alvan Graham Clark, joined their father's growing business, and together they founded the firm of Alvan Clark and Sons, makers of the finest—and largest—refractor telescopes of their time.
		Alvan Clark and Sons: Artists in Optics by Deborah Jean Warner and Robert B. Ariail, William-Bell (Richmond, Virginia), in association with the National Museum of American History, 1995
	www.smithsonianmagazine.com /issues/2001/october/refractors.php (281 words)

	[No title]
		Mike Reynolds Restoration of Chabot's Clark and Brashear Refractors The fine 8 inch Clark, built in 1883 and the 20 inch Brashear, mounted in 1915 by Warner and Swasey, are still in superb condition and are in regular use whenever conditions permit.
		The Columbia University 12 3/8-inch Alvan Clark refractor, having fallen into a state of disrepair and disuse, was advertised for sale in November 1990 by the University.
		The Alvan Clark and Sons firm built a 6-inch observatory refractor for the College of the Pacific, a Methodist institution, in 1884.
	www.europa.com /~telscope/atsabstr.txt (18771 words)

	Rose-Hulman Institute of Technology Department Webpages (Site not responding. Last check: 2007-10-08)
		Alvan Clark (1804-87) and his two sons, Alvan Graham and George Bassett were world famous for making the best telescopes as well as the largest telescopes of the time.
		The Clark is now on a Paramount ME computer controlled mount manufactured by Software Bisque and is used for visual observing.
		The optical system seems to be a Newtonian layout, parabolic primary with a plane secondary mirror, with a Cassegrain focus, through a hole in the primary.
	www.rose-hulman.edu /users/groups/Observatory/Newequipment.htm (755 words)

	Highbeam Encyclopedia - Search Results for Clark, Alvan (Site not responding. Last check: 2007-10-08)
		Clark, Alvan CLARK, ALVAN [Clark, Alvan] 1804-87, American astronomer and maker of astronomical lenses, b.
		In 1846 the firm of Alvan Clark andamp; Sons was established at Cambridgeport, Mass.; it became famous as the manufacturer of the largest and finest telescope lenses.
		United States Naval Observatory UNITED STATES NAVAL OBSERVATORY [United States Naval Observatory] a federal astronomical observatory, located in Washington, D. It evolved from the Navy's oldest scientific institution, the Depot of Charts and Instruments, founded in 1830; the observatory was completed in 1844 and moved to its
	www.encyclopedia.com /articles/02800.html (267 words)

	Louisiana State University Physics & Astronomy
		The maker of the lens and the telescope was Alvan Clark and Sons.
		Clark was the premier maker of refracting telescopes and indeed is universally acknowledged to be the world's all time best maker of refractor telescopes.
		After almost two decades of inactivity, the Clark telescope is again showing beautiful views of the sky to students and Baton Rouge residents.
	www.phys.lsu.edu /landoltobservatory (589 words)

	The Clark nine inch refractor at the CfA (Site not responding. Last check: 2007-10-08)
		"The Nine Inch" was built by Alvan Clark and Sons in 1912.
		Clark refractor telescopes are world renowned for excellent optics and are featured in many of the greatest observatories.
		This instrument, as implied by its nickname, has a 9 inch (230mm) objective lens with a focal ratio of f/12 (thus, the focal length is nine feet (around 2.75 meters).
	cfa-www.harvard.edu /hco/admoff/clark9in.htm (138 words)

	Restoration of the 5.0-inch Alvan Clark and Sons Refractor Telescope Used as a "Finder" Telescope on the Steward ... (Site not responding. Last check: 2007-10-08)
		Restoration of the 5.0-inch Alvan Clark and Sons Refractor Telescope Used as a "Finder" Telescope on the Steward Observatory 36-inch Telescope on Kitt Peak -- University of Arizona; Lunar and Planetary Lab; Tucson, AZ / USA
		Restoration of the 5.0-inch Alvan Clark and Sons Refractor Telescope Tube Assembly Used as a "Finder" Telescope on the Steward Observatory 36-inch Spacewatch Telescope on Kitt Peak -- University of Arizona; Lunar and Planetary Lab; Tucson, AZ / USA
		Many of us suspected that the finder had to be of Clark manufacture, but the engraved signature was not visible beneath the thick paint layers.
	www.lpl.arizona.edu /~jmontani/clark.htm (661 words)

	[No title]
		116kb: Equatorial mount for the six inch Alvan Clark & Sons telescope built for the College of the Pacific, a Methodist institution in California.
		Furthermore, the telescope is missing the objective lens; and the college is missing the telescope, recently sold to a private collection.
		102kb: Filar micrometer of the six inch Alvan Clark & Sons telescope built for the College of the Pacific, a Methodist institution in California.
	home.europa.com /~telscope/index.txt (1029 words)

	clark refractors
		The 6" Clark is not quite as original as the 4".
		Hardie purchased the Clark from George Slack in 1958.
		In case you purchase this telescope it would be better to fit the spare mount equatorial mounting to the iron pier and we keep the Clark mounting to use on some cheaper telescope.
	www.justfurfun.org /astrohtml/alvan_clark_telescopes_and_acces.htm (1174 words)

	Columbia Missourian - Gazing into the great beyond (Site not responding. Last check: 2007-10-08)
		The telescope, constructed by Alvan Clark and Sons, is on the second floor of Morrison Observatory and used by Central Methodist University.
		The Clark telescope lacks many of the bells and whistles of the smaller modern version.
		Peery believes that the historical importance of the Clark telescope is a pivotal part of the university and the town.
	columbiamissourian.com /news/story.php?ID=15862 (667 words)

	CSSObservatory
		In the mid-1800's, Charles Churchill, came to the college with a background at Alvan Clark's telescope making firm, the premier refractor telescope maker of the 19th and 20th centuries.
		Alvan Clark donated a 5" refractor telescope for use by Churchill in his teaching, which remained at the college until at least the 1920's.
		During the late 19th and early 20th century, observing was a significant part of the astronomy curriculum at Oberlin.
	www.oberlin.edu /observatory/ocastronomyhistory.html (565 words)

	5" Clark refractor from John Briggs' collection (Site not responding. Last check: 2007-10-08)
		This 5" refractor from the private collection of John Briggs (23k.jpg) is a perfect twin to the original eight "USNO, Transit of Venus telescopes" made by Alvan Clark & Sons, complete with their unmistakable signiture wrapped around the tailpiece.
		John speculates that this telescope could have been a "nineth" USNO TOV telescope, made by the Clarks as a backup for in case something bad happened to one of the original eight.
		This seems quite reasonable in the light of the importance of obtaining the 1874 observations and by comparing some surviving correspondence about the early plans for a telescope at Abbot Academy.
	www.saao.ac.za /~wpk/tov1882/clarke.html (195 words)

	McKim Observatory
		In 1968, the Smithsonian Institution published bulletin number 274, in its United States National Museum series, with the undramatic title, Alvan Clark and Sons, Artists in Optics.
		The first part of this small volume contains a biographical sketch of Alvan Clark, a nineteenth century portrait painter, with a studio in Boston, Mass., who, when in his middle forties, almost as a hobby, began making telescope lenses.
		These lenses, produced with his sons, who later joined him in the business, and by others trained by them still later, eventually came to be regarded as among the finest telescope lenses ever made.
	www.depauw.edu /univ/mckim/corbett.asp (659 words)

	An Historic 8¼" Alvan Clark Returns To It's Former Glory
		When I returned to see the old observatory, I was quite distressed by the fact that the Alvan Clark telescope had fallen into serious disrepair.
		We don't think Alvan Clark or Frank Seagrave would be at odds with these goals at all.
		That is I ask myself, "How would Alvan Clark react to this decision, and would he be pleased with the results?" Being an award winning engineer, craftsman and machinist myself, I feel that I have a very good sense for how he would respond to many of my decisions.
	www.theskyscrapers.org /contentmgr/showdetails.php/id/624 (3187 words)

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