telescope cassegrain
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Celestron T-Adapter for C5, C8, C9-1/4, C11, C14 Celestron Telescopes 93633-A
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DescriptionCelestron T-Adapter for C5, C8, C9-1/4, C11, C14 Celestron Telescopes 93633-A Features
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32 NEW PLANETS IN OTHER SOLAR SYSTEMS ARE DISCOVERED - REVEAL HOW PLANETS ARE FORMED - LIFE APART FROM US?
32 new Planets are discovered in 2009
The smallest is five times the size of the earth
This picture taken in January 2009 illustrate the eksoplanet HD80606b which is around 200 lightyears away from earth. European astronomers disclosed that they had discovered 32 new previously unkown eksoplanets orbiting other stars than our own sun. Photo: Scanpix/AFP PHOTO / NASA / Spitzer Space Telescope
HD 80606 b is a superjovian planet (Eccentric Jupiter) 190 light-years distant in the constellation of Ursa Major. The planet was discovered orbiting the star HD 80606 in April 2001 by a team led by Michel Mayor and Didier Queloz. Based on its mass, at 4 times that of Jupiter, it is a gas giant. Since the planet transits its star, its radius is determined to be at 73,560 km (slightly larger than planet Jupiter).
The planet has wild variations in its weather as it orbits its parent star. Computer models predict the planet heats up 555 °C (1,000 °F) in just a matter of hours triggering "shockwave storms" with winds that move faster than the speed of sound
European astronomers have up till now discovered 32 previously unknown plants orbiting other stars than our own sun. The number of eksoplanets is then up to over 400 at the moment.
The smalles of the newly discovered eksoplanets is around 5 times the size of the earth, while the largest is around 5 times larger than our solar system planet Jupiter which is the largest plant in our own solarsystem.
This was revealed at a statement given by the European Space Agency astronomers this Monday.
The astronomers stated that more than 40 percent of the stars looking like our own sun have planets with small masses.
The new observations have given the astronomers a large insight into the variety of planet systems. Nuno Santos, one of the project researchers stated that this helps us to understand how planets are formed- De nye observasjonene har gitt astronomene stor innsikt i planetsystemets mangfold.
The astonomers used HARPS, which is a special designed instrument at the European observatory in Chile to map the new eksoplanets.
This instrument gives the researchers the chance to calculate the size and mass of objects observed and discovered in the Universe.
HARPS is a spectrometer dedicated to the search for extrasolar planets by means of the technique of precise radial velocity measurement. HARPS is developped by a consortium headed by the Geneva Observatory. It is installed at the Coude room of the 3.6 meter telescope at La Silla, with an optical fiber link to the Cassegrain focus.
About the Author
He has a background as civil engineer and geoscientist. He has worked mainly within the oil and gas industry from the mid 1980s. He has written a few fictional novels as well as being the author of some professional litterature within oil and gas sector, he is now an editor of some web sites.
astronomers!! is a Schmidt-Cassegrain Telescope to much for a bigginer?
out of all the ones i looked at i like these the most. but i never used one i relly dont know what im getting into. would this be to much telescope for a begginer. should i just stick with a standard reflecting telescope or refractor style telescope or would this still be ok??
A Schmidt-Cassegrain refers to a style of telescope, not a particular telescope. It's a reflecting telescope, just a different set-up. If you want to get into amateur astronomy, get the best telescope you can afford, and that means the biggest primary mirror.
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 NEW Black 90mm Cassegrain Telescope Astronomy w Tripod  US $149.99
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 Orion StarMax 102mm EQ Maksutov Cassegrain Telescope US $178.50
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Celestron T-Adapter for C5, C8, C9-1/4, C11, C14 Celestron Telescopes 93633-A
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DescriptionCelestron T-Adapter for C5, C8, C9-1/4, C11, C14 Celestron Telescopes 93633-A Features
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Celestron NexStar 4 SE Telescope
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DescriptionTE1) CELESTRON NEXSTAR 4SE TELESCOPE Amazon.com Review Celestron’s NexStar 4 SE is the smallest and most portable telescope in Celestron’s NexStar SE series. Using a Maksutov-Cassegrain optical design, the NexStar 4 SE puts the magnifying power of a four foot long telescope into an optical tube only 13 inches long. MoonThe NexStar 4 SE features computerized finding and tracking of nearly 40,000 celestial objects, no-tool setup is easy, and planetarium software for your PC is included. Jupiter The NexStar 4 SE delivers great views of the Moon, the planets, and bright deep space objects. The standard equipment 25mm E-Lux plossl eyepiece gives a magnification of 53X, enough to see the Lunar disk, Saturn’s rings and the major cloud bands on Jupiter. It’s easy to add optional eyepieces to zoom in for more detail. Using a 12.5mm X-Cel eyepiece for 106X magnification I can see several cloud bands on Jupiter and I can even pick out the small dark shadow as one of Jupiter’s moons passes in front of the planet. On a good night I can push the magnification up to 230X with a 6mm plossl eyepiece while viewing the Moon and planets. The NexStar 4 SE package also includes a sturdy adjustable tripod, a motorized alt-azimuth mount, and the NexStar hand held computer controller. I don’t need star charts or a GPS reciever to operate this telescope. Celestron’s patented SkyAlign procedure is easy to use, and experienced users will like the two-star align and solar-system align options because they are even quicker to set up. The steel tripod and alt-azimuth mount provide a solid base for the NexStar 4 SE. Vibration is not a problem, even while focusing at high power. The computerized tracking is also very good, easily keeping planets in the field of a high power eyepiece. The disadvantage of a computerized scope, of course, is battery consumption. I find that rechargeable NiMH batteries work very well in the NexStar 4SE; a set of batteries lasts all evening and I don’t need to worry about electrical cords getting tangled in the dark. The NexStar 4 SE is a great portable telescope, just right for visual observing or for taking short exposure pictures of the Moon and planets. It’s only fair to warn you that a small telescope has its drawbacks, however; there are thousands of objects in the NexStar database that are simply too dim to see with a four inch telescope. --Jeff Phillips Venus Pros: Small, portable and affordable Very good optics Easy computerized tracking Cons: Rechargeable batteries not included Small size limits deep space viewing Features
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Celestron 94305 Two-inch Eyepiece and Filter Kit
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DescriptionCelestron 2in Eyepiece and Filter Kit 94305 If you've got a telescope or spotting scope equipped with a two-inch focuser, you will want to consider adding the Celestron 94305 Two-inch Eyepiece and Filter Kit. Featuring several of Celestron's high-quality accessories, this kit can be used with virtually any telescope or spotting scopes, regardless of the manufacturer, with a two-inch focuser. Included in the kit are: Three E-Lux two-inch eyepieces, featuring a three-element, fully multicoated optical design with a 56-degree apparent field of view (the 40mm has a 50-degree field of view), in 26mm, 32mm, and 40mm focal lengths. One two-inch Barlow 2x lens. This fully multicoated lens doubles the magnifying power of your eyepiece by doubling its effective focal length and gives you a total of six power combinations. Five colored eyepiece (lunar and planetary) filters, including one each of the following: Kodak Wratten numbers 12 (deep yellow), 21 (orange), 25 (red), 58 (green), and 80A (blue). These two-inch filters are designed to greatly enhance your enjoyment of the solar system. One two-inch, 90-degree, multicoated mirror diagonal that allows you to take advantage of the wider field of view provided by two-inch eyepieces. It fits all rear cells of Schmidt-Cassegrain telescopes and includes an adapter to use with refractor telescopes. The accessories are housed in a sturdy aluminum carrying case with a die-cut interior for convenient storage and protection. Each accessory is protected by Celestron's one-year limited warranty. What's in the Box Three E-Lux eyepieces, E-Lux Barlow lens, five lunar/planetary filters, 90-degree star diagonal, refractor adapter, and aluminum carrying case. Features
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Sky & Telescope's Mirror-Image Field Map of the Moon
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Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (Patrick Moore's Practical Astronomy Series)
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DescriptionChoosing and Using the New CAT will supersede the author's successful Choosing and Using a Schmidt-Cassegrain Telescope, which has enjoyed enthusiastic support from the amateur astronomy community for the past seven years.Since the first book was published, a lot has changed in the technology of amateur astronomy. The sophistication and variety of the telescopes available to amateurs has increased dramatically. Computerized SCTs, Maksutov-Cassegrains, and most recently Meade's new and acclaimed Ritchey-Chrétiens have come to dominate the market. That means that all amateurs considering the purchase of a new telescope (not only a SCT, and not just beginners) will benefit from this detailed guide. Choosing the right telescope for particular kinds of observation (or even for general work) is far from easy - but Rod Mollise gives invaluable advice and guidance. Choosing and Using the New CAT will supersede the authorâs successful Choosing and Using a Schmidt-Cassegrain Telescope, which has enjoyed enthusiastic support from the amateur astronomy community for the past seven years.Since the first book was published, a lot has changed in the technology of amateur astronomy. The sophistication and variety of the telescopes available to amateurs has increased dramatically. Computerized SCTs, Maksutov-Cassegrains, and most recently Meadeâs new and acclaimed Ritchey-Chrétiens have come to dominate the market. That means that all amateurs considering the purchase of a new telescope (not only a SCT, and not just beginners) will benefit from this detailed guide. Choosing the right telescope for particular kinds of observation (or even for general work) is far from easy â but Rod Mollise gives invaluable advice and guidance. |
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So You Want a Meade LX Telescope!: How to Select and Use the LX200 and Other High-End Models (Patrick Moore's Practical Astronomy Series)
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DescriptionThe Meade LX200 series of telescopes was introduced in 1992 and represented a giant step forward in technology for amateur astronomers - computer control. The LX200 series telescopes were an instant success and have outsold all other astronomical telescopes put together. Steady development has continued to the present day, and LX200s are available in a range of apertures from 8-inch through the giant 16-inch, which is widely installed in university astronomy departments and the smaller public observatories. For anyone considering buying a high-end Meade telescope, the book offers an experienced user's guide to what can actually be achieved with it.So You Want a Meade LX Telescope also provides detailed discussions about some of the many software packages available to aid optimizing and actually using the scope. The typical results are discussed so readers can know what to expect. Also reviewed are essential accessories such as CCD cameras and the latest Active Optics units.These extraordinary telescopes are capable of amazing results, but using them and setting them up can be a chore. That's why this book is essential reading for anyone who has bought or upgraded to an LX200 or its top-of-the-range companion, the RCS400 (later re-designated the LX400ACF). The Meade LX200 series of telescopes was introduced in 1992 and represented a giant step forward in technology for amateur astronomers - computer control. The LX200 series telescopes were an instant success and have outsold all other astronomical telescopes put together. Steady development has continued to the present day, and LX200s are available in a range of apertures from 8-inch through the giant 16-inch, which is widely installed in university astronomy departments and the smaller public observatories. For anyone considering buying a high-end Meade telescope, the book offers an experienced user's guide to what can actually be achieved with it.So You Want a Meade LX Telescope also provides detailed discussions about some of the many software packages available to aid optimizing and actually using the scope. The typical results are discussed so readers can know what to expect. Also reviewed are essential accessories such as CCD cameras and the latest Active Optics units.These extraordinary telescopes are capable of amazing results, but using them and setting them up can be a chore. That's why this book is essential reading for anyone who has bought or upgraded to an LX200 or its top-of-the-range companion, the RCS400 (later re-designated the LX400ACF). |
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Orion Apex 90mm Maksutov-Cassegrain Telescope
Sale Price: $229.99 |
DescriptionWith a tube length of 11 inches, a 90mm (3.5") precision-polished fully multi-coated meniscus front lens, and solid uncompromising construction. the Apex 90 Compact Mak is a paragon of portability, optical excellence, and durability. Better still, it's one of the most versatile scopes we offer. The Apex 90 delivers bright, high-contrast images, and with a focal length of 1250mm (f/13.9) you also get a generous image scale. It features a built-in 1/4"-20 adapter plate that makes it easy to mount onto a standard photo tripod for viewing grand daytime vistas. Attach a 35mm camera to the scope's visual back (with a T-ring adapter sold separately) and use the whole assembly as powerful telephoto lens for astrophotography and terrestrial shooting. What more could you want? Includes a 25mm Plossl eyepiece, 6x20 finder scope, 45-deg correct-image diagonal, and fully padded carrying case. One-year limited warranty. Features
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Celestron Advanced C6-SGT 11079-XLT 6"
Sale Price: $1,099.00 |
DescriptionCelestron Advanced C6-SGT 11079-XLT 6" Telescope Features
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Tele-Vue Accessory Bracket for Schmidt-Cassegrain Telescopes
Sale Price: $28.99 |
DescriptionThis bracket is mounted on any 8" or larger Schmidt-Cassegrain telescope and allows the TV-60 to function as a finderscope Requires the Tele Vue SCT Accessory Bracke and the Mounting Block Adapter. Also available as a complete kit |
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Celestron 52238 C70 Mini Mak Spotting Scope
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DescriptionCelestron C70 Mini Mak 25-75x Zoom Angled Spotting Scope, Black w/ Table Tripod 52238 Features
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