Geometry.Net - Basic_T: Telescopes

Discovery Telscopes, Incorporated
Manufacturer of optics and complete telescopes.
http://www.discovery-telescopes.com/

Extractions: www.astrophoto.com "...words fail to describe the perfection of the primary mirror you made for us. I have NEVER seen anything like this before ...this mirror appears to be perfect! The inside-outside is so identical there is not the slighest clue which side of focus you are on. The Ronchi lines are so straight they look fake." "The action of the scope is excellent...very smooth motion... it is obvious that you have cut no corners in the construction." "I see now the other two (Discovery) 17.5" scopes that I looked through were no accident... your mirrors are the best I have ever seen... I don't know how you do it, but you have a severe talent for making extraordinay optics." "...stars appear as tiny, dazzling pinpoints of light...images like M13 take on a whole new appearance, and seeing the central star in the ring nebula with averted vision in a 17.5" mirror becomes routine. We cannot be more pleased with this telescope, and we have had many scopes over the years." WHY NOT PROVE IT TO YOURSELF WITH DISCOVERY'S
Orion Telescopes
Large discount catalog of telescopes, binoculars, and accessories. Full online catalog, sameday Category Science Astronomy DealersCatalog Request Catalog Quick Shop Product Wizard Clearance Learning Center CustomerService My Account. telescopes Binoculars Accessories. Home. Site Map.
http://www.telescope.com/

Extractions: var homeSrcArr = new Array ( "/images/us/local/localnav/telescopes_hm_btn_on.gif", "/images/us/local/localnav/telescopes_hm_btn_off.gif", "/images/us/local/localnav/binoculars_hm_btn_on.gif", "/images/us/local/localnav/binoculars_hm_btn_off.gif", "/images/us/local/localnav/accessories_hm_btn_on.gif", "/images/us/local/localnav/accessories_hm_btn_off.gif", "/images/us/local/page_specific/home/default_roll.jpg", "/images/us/local/page_specific/home/telescope_roll.jpg", "/images/us/local/page_specific/home/binoculars_roll.jpg", "/images/us/local/page_specific/home/accessories_roll.jpg" ); preLoadCatImages(homeSrcArr); FREE CATALOG quality outdoor optics in the business. We've been serving amateur astronomers and outdoor adventurers for over 27 years with an extensive assortment of quality products and top-notch customer service and support. Guaranteed 100% Satisfaction We stand behind every one of our products. If something doesn't perform to your expectations, just return it within 30 days for a prompt refund.
Telescopes In Education (TIE)
The World's Largest Optical telescopes. Operational. Aperture (meters)
http://tie.jpl.nasa.gov/tie
Telescopes
Find an extensive alphabetical list of links to professional telescope information and observatory sites for astronomers. Observatory operates the AngloAustralian and UK Schmidt telescopes at Siding Spring, Australia, and a laboratory on
http://www.cv.nrao.edu/fits/www/yp_telescope.html

Extractions: The Advanced Camera for Surveys (ACS) will be installed in the Hubble Space Telescope (HST) during a Space Shuttle mission scheduled in 2000. ACS will increase the discovery efficiency of the HST by a factor of ten. ACS will consist of three electronic cameras and a complement of filters and dispersers that detect light from the ultraviolet at 1200 angstroms to the near infrared at 10,000 angstroms.
Isaac Newton Group Of Telescopes
on the island of La Palma in The Canary Islands. Details about the facilities offered on the 4.2-m Category Science Astronomy International FacilitiesThe Isaac Newton Group of telescopes (ING) operates three worldclasstelescopes on La Palma, Canary Islands, Spain. The Isaac
http://www.ing.iac.es/

Extractions: News: Change to PATT Submission Deadlines Spectacular Views of an Exploding Star First light on LIRIS ING Newsletter No. 6 ... Satellites and Tidal Streams Conference The Isaac Newton Group of Telescopes has been selected to receive the Griffith Observatory Star Award for excellence in promoting astronomy to the public through the World Wide Web ING web site: http://www.ing.iac.es UK mirror site: http://www.ast.cam.ac.uk/ING/
Dave Stevick's Weird Telescopes Page
Features several unique solutions for telescope issues.
http://bhs.broo.k12.wv.us/homepage/alumni/dstevick/weird.htm

Extractions: w e i r d Telescopes A big West Virginia welcome to my weird telescope page. Achieving the very best views of the night sky is what this page is about. Showcased here are a variety of solutions by individuals in search of the perfect image. These instruments all seem strange: the need to use mirrors while keeping them from shadowing each other gives these telescopes odd geometries. Come join the quest. He appointed the moon for seasons:
Large Telescopes
index of the world's largest groundbased optical telescopesCategory Science Astronomy Optical and Infrared Large telescopesThe World's Largest Optical telescopes. Operational. Aperture (meters),Name, Location, Latitude; Longitude Altitude, Comments. 10.0, Keck,
http://www.seds.org/billa/bigeyes.html
The Telescope
The telescope was one of the central instruments of what has been called the Scientific Revolution of the seventeenth century. But although Galilean telescopes of higher magnifications were certainly made, they were almost useless because of the
http://es.rice.edu/ES/humsoc/Galileo/Things/telescope.html

Extractions: The telescope was one of the central instruments of what has been called the Scientific Revolution of the seventeenth century. It revealed hitherto unsuspected phenomena in the heavens and had a profound influence on the controversy between followers of the traditional geocentric astronomy and cosmology and those who favored the heliocentric system of Copernicus. It was the first extension of one of man's senses, and demonstrated that ordinary observers could see things that the great Aristotle had not dreamed of. It therefore helped shift authority in the observation of nature from men to instruments. In short, it was the prototype of modern scientific instruments. But the telescope was not the invention of scientists; rather, it was the product of craftsmen. For that reason, much of its origin is inaccessible to us since craftsmen were by and large illiterate and therefore historically often invisible. Although the magnifying and diminishing properties of convex and concave transparent objects was known in Antiquity, lenses as we know them were introduced in the West at the end of the thirteenth century. Glass of reasonable quality had become relatively cheap and in the major glass-making centers of Venice and Florence techniques for grinding and polishing glass had reached a high state of development. Now one of the perennial problems faced by aging scholars could be solved. With age, the eye progressively loses its power to accommodate, that is to change its focus from faraway objects to nearby ones. This condition, known as
Dobsonian Telescope Obsession
Manufacturer of Dobsonian telescopes.Category Science Astronomy Manufacturers Obsession telescopes PO Box 804W-Lake Mills, WI 53551 USA. UPDATED 3/21/03. Obsessiontelescopes LLC - PO Box 804W - Lake Mills, WI 53551 USA - 920-648-2328.
http://www.globaldialog.com/~obsessiontscp/OBHP.html

Extractions: Large aperture Dobsonian telescopes for observers that want the best. Find out below why nothing else comes even close to an Obsession Telescope. We've tried to include most of our product information here on the Web, however you can still order the printed versions below to have and hold in your own hands! Infra-red photo of star guide and 18" Obsession at a public Star Walk at Copper Breaks State Park near Quanah, Texas. These public astronomy programs are held in cooperation with the Texas State Park system and feature half a dozen Obsession telescopes ranging in aperture from 15 to 30 inchs. Photo taken by Fred Koch.
The BAIT Home Page
Unattended astronomical telescopes with electronic cameras to search for supernovae and monitor the brightness of celestial objects.
http://astro.berkeley.edu/~bait/
Meade Instruments Corporation - World's Leading Manufacturer Of Astronomical Tel
Products include astronomical telescopes and accessories, eyepieces, CCD imaging equipment, astronomical Category Science Astronomy ManufacturersWorld's leading manufacturer of astronomical telescopes for the seriousamateur astronomer. Products include astronomical telescopes
http://www.meade.com/
It Takes More Than One Kind Of Telescope To See The Light
Educates readers on the different types of telescopes used and why diverse technologies are necessary for the advancement of space research. be solved by comparing images of different wavelengths, telescopes are only designed to detect a particular portion of
http://science.nasa.gov/newhome/headlines/features/ast20apr99_1.htm

Extractions: April 20, 1999 : By studying the electromagnetic emissions of objects such as stars, galaxies, and black holes, astronomers hope to come to a better understanding of the universe. Although many astronomical puzzles can only be solved by comparing images of different wavelengths, telescopes are only designed to detect a particular portion of the electromagnetic spectrum. Astronomers therefore often use images from several different telescopes to study celestial phenomena. Shown below is the Milky Way Galaxy as seen by radio, infrared, optical, X-ray and gamma-ray telescopes. Different types of telescopes usually don't take simultaneous readings. Space is a dynamic system, so an image taken at one time is not necessarily the precise equivalent of an image of the same phenomena taken at a later time. And often, there is barely enough time for one kind of telescope to observe extremely short-lived phenomena like gamma-ray bursts. By the time other telescopes point to the object, it has grown too faint to be detected.
Telescope FAQ - Index
FAQ from Perkins Observatory.
http://www.perkins-observatory.org/FAQ.index.html

Extractions: Our lawyers will put you in the comfy chair and poke you with the soft cushions. NOTE You may do a lot of clicking back and forth between the pages of this FAQ. If so, it might be a good idea to increase the cache size of your web browser so that you don't have to sit waiting for the pages to reload over and over again. Questions in this FAQ: Most important things to know. READ THIS FIRST! Defining Terms. What Does All the Jargon Mean?
The Telescopes
The telescopes music news and much more . The telescopes. Enter. www.thedarlingbuds.com
http://www.thetelescopes.co.uk/
Electro-Optical & Telescope Optics; Lidar, Systems, Observatory Design And Consu
Dealer, manufacturer and sales support specialists for computercontrolled telescopes and equipment. Company also offers telescope retrofitting.
http://www.dfmengineering.com
Www.telescopes.uk.com Astronomy Astronomical Telescopes Equipment Reviews Books
A resource site for amateur astronomers. Includes, information, advice, equipment reviews, listings of manufacturers, and amateur telescope making.
http://www.telescopes.uk.com/

Extractions: email: reviews@telescopes.uk.com Shadows: observer and 4" f15 refractor Recommended Books Equipment reviews UK Telescope dealers Magazines ... Used equipment When you buy books through this site, a small commission is paid by Amazon.co.uk or Amazon.com (this has no effect on the price you pay). This helps towards the running costs of the site. Thanks for your support. email: john_franklin@telescopes.uk.com
Orion Telescopes
America's largest direct source of telescopes, binoculars, and accessoriesfor amateur astronomers and nature enthusiasts. Full
http://www.telescope.com/interact/default.asp
Astronomical Optical Interferometry
The use of multiple telescopes to produce high resolution images commonly used at most modern observatories. A literature review article.
http://www.geocities.com/CapeCanaveral/2309/page1.html

Extractions: Abstract This report documents the development of optical interferometry and provides a physical explanation of the processes involved. It is based upon scientific papers published over the last 150 years, and I have included references to the ones which are most relevant. The reader is assumed to have an understanding of modern optical theory up to undergraduate level - References 28 and 29 give explanations at a more basic level. The formation of images from interferometric measurements is discussed and several example images are included. Introduction Fizeau first suggested that optical interferometry might be used for the measurement of stellar diameters at the Academie des Sciences in 1867 . The short wavelength of light and the absence of sensitive calibrated detectors precluded more sophisticated interferometric measurements in the optical spectrum for over a century. After the Second World War most researchers instead turned to the radio spectrum, where macroscopic wavelengths and electronic detection greatly simplified the measurement of interferometric quantities. Modern computers, lasers, optical detectors and the data processing techniques developed for radio interferometry have recently enabled astronomers to produce high resolution images with optical arrays. At present only a few optical interferometer arrays are capable of image formation but many more are planned or under construction. The basic principles underlying the operation of optical interferometers have not changed, so I begin with a look at some of the earliest instruments.
The Gemini 8m Telescopes Project - Other Partner Projects
The Royal Greenwich Observatory (RGO). The Royal Observatory, Edinburgh(ROE). The Isaac Newton Group of telescopes at La Palma (ING). Canada.
http://www.gemini.edu/project/offsite.html
Woodland Hills Camera & Telescopes - Best Prices - Best Service TOLL-FREE 1-888-
Large selection of binoculars, cameras, telescopes and accessories made by Meade, Celestron, TeleVue and other maufacturers.
http://telescopes.net

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