41. Orbiting Astronomical Observatories HEAO 3 was launched on September 20, 1979, carried Gamma ray telescopes, and wasactive until Star interferometer 2 telescopes separated by a 125m arm. http://www.seds.org/~spider/oaos/oaos.html

Orbital Telescopes Since the early years of spaceflight, the advantages of astronomical observing above the Earth's atmosphere were recognized, and led to the introduction of astronomical instruments on spacecraft, i.e., astronomical observatories in space (in most cases, in Earth's orbit). Please note that this list is not complete in specific Solar research satellites, and does not include planetary probes. Astronomical Satellites Launch Sequence Additions, corrections, and comments are welcome, please contact me Our image shows Nasa's High Energy Astronomical Observatory (HEAO) 2 satellite, which was also named Einstein Ariel 1, 2, 3, 4, 5, and 6 (UK) The honor of the first astronomical satellite project goes to Great Britain. Ariel 1 , launched April 26, 1962, investigated Solar UV and X-radiation, and obtained an energy spectrum of primary cosmic rays. Ariel 2, 3, and 4 , launched March 27, 1964 (2), May 5, 1967 (3), and December 11, 1971, respectively, investigated astronomical objects in the radio range. Ariel 5 (launched October 15, 1974) and

42. Eagle Optics - Binoculars, Spotting Scopes, And Telescopes Mailorder company offering a complete selection of binoculars, spotting scopes, telescopes, tripods, and accessories. Articles about birding and buying optics for birding. http://www.eagleoptics.com/

Carefully and Expertly selected Binoculars, Spotting Scopes, Tripods, and Accessories at Discount Prices. Quick Search: Buying Guide Binoculars All Binoculars ... Shopping Cart There is a place where people still care about the rare qualities of commitment, excellence, and integrity. In the optics world, that place is Eagle Optics, your number one source for binoculars and spotting scopes. Introducing the Stokes Birding Series DLS Binoculars, the world's first premium binoculars designed by birders and for birders. Available in two magnifications: Stokes DLS 8x42 Stokes DLS 10x42 Featured Products Audubon Binoculars 8x42 Equinox with free harness Special Offer! Great value in phase-corrected roof prism binoculars. Free Ground Shipping on this item! Price: $199.99 Nikon DigiScope 5.1 System NEW Spotting Scope! A complete digiscoping package. Price: $1,299.95 Eagle Optics Binoculars Ranger Platinum Class 8x42 The ultimate binocular without spending a fortune Price: $379.00 Featured Articles Featured Articles Eagle Optics supports a wide variety of conservation efforts. Take a look a some the articles to see how we help preserve the nature you can enjoy through quality optics. more...

43. Coin Operated Binoculars - SeeCoast Manufacturing, Telescopes, Viewing Machines Coin operated and non coin operated telescopes and binoculars. http://www.seecoast.com

Be sure to check out our history page to find a SeeCoast viewer near you! Where do you want to go? Home Mark I Coin Operated Telescope Mark II Non-Coin Operated Binoculars Mark III Coin Operate Binoculars Company History International Notes Base Types Construction Colors Products Sales/Revenue Sharing Streaming Video Viewers Wheelchair Accessible Base E-mail for more information Brass Donation Plaque Welcome to the SeeCoast web site! Started in 1960, SeeCoast Manufacturing Company is considered the only domestic source for purchasing high quality, American-made coin and non-coin operated telescopes and binoculars. SeeCoast's viewers can be found in every U.S. state and in over 70 countries. SeeCoast is the world's only manufacturer of coin operated telescopes and binoculars that both sells and concessions its own equipment. As the largest operator of our products through concessions, we realize that "down time" means money lost. We service our own equipment and guarantee the highest standards of durability and minimum upkeep of anyone in the industry. SeeCoast Manufacturing has manufactured , concessioned and sold more Coin Operated Binoculars, Coin Operated Telescopes, Coin-operated Scopes, Coin-operated Viewing Machines, Coin operated Viewers, Coin operated scopes, Non coin Binoculars, Non Coin Telescopes, Donation Viewers,Binocular and Telescopes, and Outdoor viewers than any company in the world. Our Coin Scopes and coin binocular viewers can be found in all 50 US States and over 70 foreign countries. These viewers are located in Towers, observation decks, scenic overlooks, ships, parks, nature preserves and refuges. For the highest quality coin viewers and coin scopes contact SeeCoast. Clearly the Best.

44. Computer Operated Telescopes Features plans and designs for stepper or servo motor layouts as well as features,free software, howto information, and links. http://www.bbastrodesigns.com/cot/cot.html

Computer Operated Telescopes by Mel Bartels for sale: stepper and servo systems news amateurs' COTs table of contents ... contact Mel While software can reside on a microcontroller, it is my style to execute it on a laptop, allowing the hardware to be simple and flexible. In addition, a laptop has sufficient computing power and a full bodied user interface, so that adequate attention may be given to precise tracking (sub arcsecond over many minutes), precise goto (35 arcsecond rms from horizon to horizon), and all encompasing error correcting routines. My software also tends towards straightforward text interfaces, as complex graphical environments are hard to operate in the dark and injurious to night vision. Finally, the ease of developing software and getting bug fixes and enhancements out to users the next evening should not be underestimated for laptop and PC platforms. stepper system servo system Advantages 1. low cost 2. instantly responsive motors Advantages 1. can use any operating system that supports a serial link 2. larger motor dynamic range means faster slews

45. SAO Telescope Data Center Creates, and maintains software to process and archive data from optical telescopes at the Oak Ridge Observatory in Harvard, Massachusetts, Whipple Observatory, and Multiple Mirror Telescope on Mt. Hopkins in Arizona. The Smithsonian Astrophysical Observatory (SAO) is part of the Harvard Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts. http://cfa165.harvard.edu/

Harvard-Smithsonian Center for Astrophysics The SAO Telescope Data Center in Cambridge, Massachusetts , supports proposing scheduling observing computing , data reducing and analyzing, and data archiving for these optical telescopes Telescopes and Instruments ... Whipple Observatory on Mt. Hopkins in Arizona. 48" schedule 60" schedule CfA only CfA only ... MMT Observatory on Mt. Hopkins in Arizona. MMT schedule Time Allocation Committee ... skymap Making Charts from Astronomical Catalogs (Making Images) Software: widl Making Finding Charts from DSS Images Data svdfit Removing sky from spectra ApJ Letters paper Reduction stelircam Reducing Stelircam output Software hectospec Reducing Hectospec output Data rvsao Computing Redshifts in IRAF papers Analysis SAOimage Displaying Images papers Software: WCSTools Using Sky Coordinates in Astronomical Images papers Image header manipulation utilities Results Updated Zwicky Catalog of Galaxies CfA Redshift Survey Large Scale Structure Galaxy and Cluster LX-sigma Relation ... Spectra of Supernovae Resources Spectrograph Archives [Z-Machine] [FAST] [UZC(both)] ... CfA Radio Telescope Data Center The Smithsonian Astrophysical Observatory (SAO) is part of the Harvard Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts

46. Faulkes Telescope Welcome Welcome to the Faulkes Telescope Project, home of telescopes for astronomy From these pages you can access the world’s largest robotic telescopes and http://www.faulkes-telescope.com/

Home New Visitor Best Images Photo Gallery ... Simulator User Name Password Welcome to the Faulkes Telescope Project, home of telescopes for astronomy education in the UK. From these pages you can access the world’s largest robotic telescopes and carry out the observations of your choice. Click here for more details New Visitor If you are new to the FT Project or would like to find introductory information about the telescopes. Go Log in / Register Click here to register (log-in at the top of the page if you already have a password) Go Latest News Free subscriptions for UK schools and colleges Click Here Simulator available to all! Click Here Armagh Student uses FTN to observe new planet Click Here Faulkes Telescope North, first observations of Tempel 1 after Deep Impact event Click Here Explore our new website Click Here Faulkes Telescope North demonstrated at the Galway Science Festival Click Here Opening of FT south west regional centre, Camborne Learning Space

47. W.M. Keck Observatory Comprised of two 10 meter telescopes includes information on equipment andinstruments, with images and movies, observing information, and news. http://www2.keck.hawaii.edu/

The Keck Observatory Vision "A world in which all humankind is inspired and united by the pursuit of knowledge of the infinite variety and richness of the Universe." The Keck Observatory Mission "We advance the frontiers of astronomy and share our discoveries to inspire the imagination of all." Core Values About the Observatory Science and Engineering Observing Information ... News and Outreach

48. Telescopes Introduction Types of telescopes Definition of telescope and the two types oftelescopes. Refractor telescopes. Advantages and disadvantages. http://www.astronomynotes.com/telescop/chindex.htm

Contents - Telescopes Introduction Types of telescopes Definition of telescope and the two types of telescopes. Refractor Telescopes. Advantages and disadvantages. Advantages Disadvantages Reflector Telescopes. ... Astronomy Notes home

49. EHobbies.com - Your Online Hobby Shop Featuring RC Cars, Telescopes, Train Sets, Wide selection of RC cars and trucks, trains, models, telescopes, and rocketry. http://www.ehobbies.com

Your Cart Get Coupons Blog Hot Deals! ... Trains Search: Shop by Category Astronomy Die Cast Replicas Kites Models ... Trains Shop by Brand Associated Bachmann Trains Celestron Estes ... Hundreds of Top-Name Brands! Best Sellers ParkFlyers R/C Begin-Air 4-Channel RTF R/C Airplane - 4301 ParkFlyers R/C Cessna 182 3-Channel Scale RTF R/C Airplane - 4302 HPI Savage 25 Limited-Edition 3-Speed RTR Truck w/ LE Body - 852 E-Flite Blade CP Ready-To-Fly Electric Micro R/C Heli - H1100 ... Click here to see the new eHobbies Blog! You'll find breaking hobby news here first! Most Popular Items for E-Flite Blade CP Ready-To-Fly Electric Micro R/C Heli - H1100 Regular price: eHobbies Price: $ You Save: $70.00 (24%) HPI Savage 25 Limited-Edition 3-Speed RTR Truck w/ LE Body - 852 Regular price: eHobbies Price: $ You Save: $480.00 (48%) Quest UFO Flying Saucer RTF Rocket Starter Outfit - 5760S ^ Regular price: eHobbies Price: $ You Save: $23.00 (70%) Regular price: eHobbies Price: $ You Save: $15.00 (30%) Bandai 1/850 Star Trek Enterprise NX-01 : 122721 Regular price: eHobbies Price: $ You Save: $25.00 (33%)

50. Telescopes Our eyes can detect the visible (optical) band, so the early telescopes were all This chapter covers the basics of telescopes and the effects of the http://www.astronomynotes.com/telescop/s1.htm

Telescopes Chapter index in this window Chapter index in separate window This material (including images) is . See my for fair use practices. Men and women have looked up at the sky and wondered about the things they see up there for as long as humans have lived on our Earth. Long ago, the Sun and Moon were mysterious objects that could be seen in the day and night. But the planets and stars were even more mysterious probably because they are so far away that we could only see them as points of light. Unlike the things on the Earth that we can study up close, handle, listen to, smell, and taste, the only thing ancient watchers of the sky had to learn about things in space was their eyes and imaginations. Only very recently in the history of humanity have astronomers been able to extend the reach of our eyes (and our imaginations!). Galileo pioneered modern explorations in the early 1600's by using a device originally invented for naval operations to explore the heavens. The device he used, of course, was the telescope , an instrument used to gather and focus light. Our atmosphere prevents most of the electromagnetic radiation from reaching the ground, allowing just the visible band, parts of the radio band, and small fractions of the infrared and ultraviolet through. Our eyes can detect the visible (optical) band, so the early telescopes were all built to observe in that part of the electromagnetic spectrum. It wasn't until the 1930's that astronomers began observing with another part of the electromagnetic spectrum-the radio band. The development of space technology has enabled astronomers to put telescopes above the atmosphere and explore all of those places out there using the full range of the electromagnetic spectrum. This chapter covers the basics of telescopes and the effects of the atmosphere on images. Vocabulary terms are in

51. Omni-Optical For All Your Optical Needs Optical science, prisms, illusions, fiber optics, microscope, telescopes, optical science activity kits, magnifiers and binoculars are a few of the items offered. http://www.omni-optical.com

Optical Science Micro-World Magnifiers Telescopes Welcome to OMNI-OPTICAL.COM An extensive offering of everything dealing with Optics. Optical Science Curious about how microscopes work? Want to experiment with lens and prisms? Then you will enjoy this department. Magnifiers There are many times that a microscope provides too much magnification. Here you will find a broad array of magnifiers that are useful for many things. Micro-World An exciting world of its own. Today microscopes are used in everything from forensics to geology. This department offers a wide range of Microscopes, all the Supplies you'll ever need and an extensive array of Specimen Sets. Everything you need to get started with the Microslide System, widely used educators. Telescopes Search the world beyond our atmosphere. Feenixx Web-Shops.net stores: Anatomy-Resources.com Arthropod.net Astronomers.net Aviation-Central.com ... Science-Store.com

52. Telescopes-direct.com Sells telescopes, binoculars and accessories. Site features information and adviceon choosing telescopes and binoculars best suited to the customer s needs http://www.telescopes-direct.com/

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53. Antique Microscopes, Globes, And Telescopes - ARSmachina Buys and sells antique brass microscopes and telescopes. Credit Cards accepted. http://arsmachina.com

antique microscopes,antique telescopes,globes,compasses,dials scientific instruments arsmachina.com microscopes telescopes the fine art of science notes on the photography ... dials var site="sm2ars"

54. Telescopes Types Refractors Achromatic Apochromatic Reflectors Discussion of two types of beginner telescopes, the reflector and the refractor. http://www.telescopes-astronomy.com.au/telescopes003.htm

TELESCOPES TELESCOPE GLOSSARY 2 Basic Types REFRACTORS These are the most popular telescope for beginners. They use a lens to gather and focus the light of the object it's pointing at. Using a lens which is made from two elements or more, the refractor reduces false colours. HOME PAGE There are two different types - the achromatic or apochromatic. CONTENTS Basic features of refractors include: PROS; small and compact maintenance free high resolution (excellent planet scopes) Can be used during the day for terrestrial viewing without the image being upside down CONS; expensive for larger models and apochromatic less light gathering power than reflecting telescopes because of their smaller size Awkward to use when pointing straight up (straight up is the best place to view with a telescope) false colour especially in larger models TELESCOPE LINKS: Mounts Light Gathering Power Closer Look At Refractors Closer Look At Reflectors ... Tips REFLECTORS Astrophotography Build your own telescope Reflectors gather light using a mirror which is curved. The curved mirror concentrates the light and is then magnified by an eyepiece. Newtonian reflectors (invented by Sir Issac Newton) can be identified by the eyepiece protruding from the side of the telescope. These are the most common and cheapest to buy. Other types of reflectors incorporate a front lens which corrects the incoming light first before hitting the main reflective mirror. These front lenses are called corrector plates and the different types used determine the type of reflecting telescope. The more popular types are the

55. TAL Telescopes The telescopes for amateur astronomers manufactured in Russia have earned an The Novosibirsk factory currently produces a dozen of TAL telescopes, http://www.telescopes.ru/product.html?cat=1

56. Index Drawings and sketches with information and links. http://www.geocities.com/eijikato2001/

Drawings of Astronomical Objects This is a collection of drawings of astronomical objects (deep-sky and solar system objects) made at the telescope. Most of the objects were observed through an 18.5-inch (47 cm) reflector on a Dobsonian mounting. Until 2003 my observing site was at Laidley, 60 km west of Brisbane, Queensland, Australia. In August 2003 I moved to Ballandean, 240 km south of Brisbane. Since then I have been observing from the new site. Courtesy M. Yokoyama To Japanese Page Sky conditions The naked-eye limiting magnitude at the zenith exceeds 6.0 both at Laidley and Ballandean. There are a few light sources in the neighbourhood, but generally they do not affect observing. My method of drawing The initial drawing is made at the telescope with black pencils on white paper. Sometimes a star chart created by MegaStar is used, in stead of blank paper, for accurate plotting of the background stars. The drawing is complete after making necessary blurring and smearing in case of galaxies and nebulae. Most of the emission nabulae were observed with the UHC or OIII filter for better contrast.

57. Stargazer Steve Telescopes Home page of Stargazer Steve s excellent Sgr3 handmade telescope and the Deluxe4 1/4 inch Kit you can build. View more SKY for Less! http://stargazer.isys.ca/

6-Inch Truss Tube Scope 10-Inch Truss Tube Scope Sgr-4 6" Deluxe Reflector Kit ... Read SkyNews Review of the Deluxe Kit! Site Designed by Please report problems with this page to the Webmaster Universe Today - Space news from around the Internet, updated every weekday. REFLECTING TELESCOPES THAT GIVE MORE SKY FOR LESS FROM NEW!: EACH STARGAZER STEVE TELESCOPE OR KIT NOW INCLUDES A FREE RIGEL QuikFinder. MARS! Observations by a customer. Click here for a link. 6-Inch f/5 Truss Tube Telescope. Easy-in/Out Black Shroud comes with every Truss Tube scope. Click Here! For information about the new 10-inch f/5 Truss Tube Scope, Click Here! The Ready-to-use Sgr-4 (below) This 4 1/4-inch Reflecting Telescope comes complete with a rock steady natural-finish hardwood mount. "Objects were surprisingly bright and clear in these small aperture scopes. The instruments are perfect for wide-field buffs" "The Stargazer was set up the second I spread its tripod legs. This tripod demonstrates how rigid yet lightweight a good design can be." "...The Stargazer [Sgr-3], with a significantly darker background, allowed me to see more detail [in the Andromeda Galaxy]."

58. ADVANCED COMPOSITE PROFESSIONAL TELESCOPES - Carbon Fiber Reinforced Plastics - Carbon, Aramid and Sglass/epoxy composite tubes. Descriptive intro to composites. http://www.dreamscopes.com

Servicing: Government, Universities, Schools, Professionals and Advanced Amateurs. Surplus 16" OD carbon fiber/honeycomb core tube. See details. 3 sandwich-cored graphite-epoxy mirror cells. The world's first production line of optical subassemblies made from advanced composites. UPDATE: An 8" Maksutov-Cassegrain f12. This OTA debuted at NEAF 2005. UPDATE: Rick Yandrick's Alberio image below received Astronomy Photo Of The Day, August 30th, 2005 A 12" OD x 49.5" honeycomb core, graphite-epoxy tube that weighs <6.4 lbs. This tube was used for a 10" f5 Newtonian astrograph. First light took place at the end of June, 2005. "...after working with a Newtonian with a Carbon Fiber tube, I would never want to use anything else. The lightweight, thermally stable aspects are too great to ever go back." Rick Yandrick - July 16th, 2005

59. BBC NEWS | Science/Nature | Mercury Passes Across Sun BBC News article anticipating the 2003 transit. http://news.bbc.co.uk/1/hi/sci/tech/2994347.stm

Home TV Radio Talk ... Newswatch Last Updated: Wednesday, 7 May, 2003, 10:49 GMT 11:49 UK Email this to a friend Printable version Mercury passes across Sun The planet Mercury has passed in front of the Sun as viewed from Earth. View larger image The event, called a transit, occurs only about 12 times a century. Mercury began the journey across the star's disc at just after 0510 GMT, depending on the viewing location on Earth. It slipped off the star's face at about 1032 GMT. Some part of the five-hour trek was visible from the whole world except Antarctica and the western parts of the Americas. Europe, Asia and Africa were most favoured. Skygazers without access to proper equipment were strongly recommended to watch the event only on the internet. Venus show The websites of several organisations, including the European Southern Observatory (Eso) and the Solar and Heliospheric Observatory (Soho), which streamed the transit live, reported strong traffic. THE PASSING DOT Like thousands across the globe I watched the transit of Mercury with interest, and not a little wonder

60. Telescopes Types of telescopes, Refracting, Reflecting, Hybrid, SchmidtCassegrain,Maksutov-Cassegrain, http://www.astro-tom.com/telescopes/telescopes.htm

Home Buying Telescopes Eyepieces Magnification ... Refurbishment Types of Telescopes There are two basic types of telescopes: refractors and reflectors. Both have their advantages. Properly outfitted, either will show you distant galaxies, the rings of Saturn, or the craters of the Moon. Refracting telescopes Refractor Refracting telescopes gather light with a lens, directing it to the eyepiece. Small starter scopes are often of this type, as they are simple to operate and maintain. Larger refractors, however, become very expensive and are typically bought by avid enthusiasts. Reflecting telescopes Reflecting telescopes gather light with a mirror, reflecting it before directing it to the eyepiece. Reflectors typically give you a wider aperture for the dollar. They require more care and maintenance, however. The simplest type of reflecting telescope is called a "Newtonian," after Sir Isaac Newton who invented them. When a Newtonian telescope in it's simplest and most user-friendly form, it's called a Dobsonian telescope after John Dobson who showed the world that you don't have to be rich to make your own telescope Reflector Hybrid Telescopes Probably the most common type of serious amateur astronomical telescope is the Schmidt-Cassegrain telescope. It is a reflector telescope that also uses a corrector plate to eliminate chromatic aberation.

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