Spotting Telescope
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Go Diego, Go! Spotting Scopes 4ct
Sale Price: $6.66  |
DescriptionEvery adventurer needs a Go, Diego, Go! Spotting Scope. Each package includes 4 green and orange plastic mini telescopes with lens. Design features Diego and "Go, Diego, Go!" headline. These Spotting Scopes meet or exceed ASTM F963 safety requirements. Each scope measures 2 3/4" long and is great for party favors. WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years. Features
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Cosmic ray hotspots Puzzle Researchers
Hot on the heels of speculation that cosmic rays may have revealed the signing of elusive dark matter in space, new observations could challenge that idea and reinforce an alternative explanation.
An experiment in seven years the Milagro cosmic ray detector near Los Alamos, New Mexico, has shown "the bright patches" of high energy cosmic rays on Sky1 - something incompatible with a source of dark matter.
Cosmic rays are charged particles, mainly protons and electrons, which occur in space and generally have a characteristic energy spectrum - the higher its energy, which are rarer.
But last week, researchers working Delgado advanced in the ionization calorimeter (ATIC) experiment, which uses sensors by a high altitude balloon to measure cosmic ray electrons over Antarctica, reported an unexpected hit in the energy spectrum, corresponding to an excess of electrons with energies between 300 and 800 gigaelectronvolts2.
Advice to the anomaly have seen before. A satellite observatory - Payload Antimatter Matter Exploration and Light nuclei Astrophysics (Pamela) - detects a ray positron excess cosmic, anti-particles like electrons energies3. And a Japanese balloon flame detector transmission electron telescope with scintillating fibers (BETS) also found a small excess of cosmic ray electrons energy4 high.
These cosmic rays may be the decay products of hypothetical dark matter particles, believed to represent about 85% of all matter in the Universe. Astronomers have benefited from the gravitational effects dark matter to explain why rotating galaxies are not separated, and rotating in space. But as its name suggests, dark matter can not be seen directly and its identity remains obscure.
A common assumption is that dark matter consists of a hitherto unknown particle that interacts weakly with other forms of matter. In some theories, two dark matter particles are predicted to annihilate when they collide, producing a high energy electron-positron pair. This could explain ATIC cosmic ray hit and indications that the PAMELA data. But if that is the case, anomalous cosmic rays are distributed more or less uniformly across the sky.
By contrast, the Milagro team, led by Jordan Goodman at the University of Maryland, College Park, which is cosmic ray protons grouped in two 'hot spots': one between the constellations of Orion and Taurus, the other near Gemini. They think the excess of cosmic rays may come from exotic sources such as neutron stars known as pulsars, rapidly spinning, rather than matter annihilations dark.
Dark Matter Mystery
Goodman stresses that it is still unclear whether the ATIC and the results are related Miracle, because the former measure cosmic ray electrons while the last proton detection. But he says that the sources of the protons that could plausibly have also been generated electrons and positrons are in the previous studies. "If it's the same phenomenon takes all, then there is dark matter," he says.
But the explanation Dark mater is not yet ruled. "I was totally perplexed by the hot spots, but I see no reason to connect to the ATIC results," says Dan Hooper, a theoretical physicist at Fermi National Accelerator Laboratory in Batavia, Illinois.
The Milagro detector is not intended primarily for research of cosmic rays, but is used for gamma ray astronomy. When high-energy gamma rays hit our atmosphere cause a flood of alien particles. These particles annihilate in a collision with the water in the tank Miracle giant, producing a flash of light that can be recorded by sensors.
However, 99.9% of the flashes seen by Milagro come from collisions of cosmic ray protons, said Goodman. This creates a background signal that must be subtracted to identify the rays gamma energy astrophysical sources. Goodman says that the search for point sources of cosmic ray protons in this context was a surprise for them.
A previous experiment from cosmic rays called the Tibet air shower array, by a team of researchers in Japan and China, saw the great differences in the intensity of cosmic rays between the two hemispheres5, but nobody had seen before these concentrations of smaller scale.
The Miracle team suggests that the protons, with energies of about 10,000 gigaelectronvolts can be generated in the extreme environment astrophysicists superdense neutron star or pulsar. At least some rays high-energy cosmic have previously been shown to come from supermassive black hole in the vicinity galaxies6.
"We do not know what it is causing, "Goodman admits. He suggests that the location may be partly caused by magnetic fields focusing trajectories of the protons.
But in general, magnetic fields in interstellar space would have an influence at random, destroying any bright spot, says Hooper. "I can not imagine how it was created, and I do not know if anybody has any cool idea, "he says.
About the Author
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Anybody know of a good place to use a telescope, near Orlando?
Recently got a new telescope and I'm excited to try it out. I live near Orlando airport though so anywhere near my house has a lot of light pollution. Does anyone know of a good place with 30 minutes of Orlando where I could go and try it? Looking for a safe and legal.
Good afternoon I have a couple of suggestions to go and test it in the safe and legal. my ideas are Christmas in the area, or even go to the beach and do it. that's something like doing so. I'ma male 44 years of age in the area of Orlando / Winter Park.
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Go Diego, Go! Spotting Scopes 4ct
Sale Price: $6.66 |
DescriptionEvery adventurer needs a Go, Diego, Go! Spotting Scope. Each package includes 4 green and orange plastic mini telescopes with lens. Design features Diego and "Go, Diego, Go!" headline. These Spotting Scopes meet or exceed ASTM F963 safety requirements. Each scope measures 2 3/4" long and is great for party favors. WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years. Features
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Tasco Essentials 8x21 Binocular (Black)
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DescriptionUltra-light binoculars offer outstanding compact performance with rugged, rubber armor ideal for hiking, backpacking or bicycling. Features fully coated optics for brightness, 8X magnification with 21mm objective lens, rubber fold-down eyecups for eye relief. Designed to fold down into itself to become even more compact. Includes carrying case. Limited lifetime warranty. Features
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BARSKA 3-9x32 Plinker-22 Riflescope
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DescriptionAdjustment knobs offer solid, satisfying 0.25-inch click adjustments, and the shooter can fine-tune for windage and elevation. The Plinker-22 is one of BARSKA's most popular riflescopes, and is engineered specifically for use with .22 rifles and rimfires. Designed for plinking and general hunting applications, this scope offers bright, sharp optical clarity, longterm durability, and 0.375-inch dovetail rings as an added bonus. Built to withstand the rugged outdoor conditions most hunters face, its casing is 100% water-, fog-, and shock-proof. Features Designed specifically for use with .22 rifles Water-, fog-, and shock-proof Fully multicoated optics Adjustable for windage and elevation Parallax-free at 50 yards Black matte finish 0.375-inch dovetail rings Includes mounting rings, lens covers, and lens cloth Specifications 3-to-9X magnification 12-inch tube length One-inch tube diameter 32-millimeter objective lens 30/30 reticle 10.7-3.6-millimeter exit pupil 3.5-inch eye relief 36-foot field of view at 100 yards at 3X magnification 13-foot field of view at 100 yards at 9X magnification 0.25-inch click value 11.5-ounce weight Warranty This BARSKA optical product includes a limited lifetime manufacturer's warranty against defects in materials and workmanship. About BARSKA BARSKA is a worldwide optics company offering an extensive line of precision sport and scientific products including binoculars, riflescopes, spotting scopes, telescopes, and microscopes. The company's product lines are designed and built with the latest optical technology, allowing users to enjoy beloved outdoor activities even more, and achieve exacting results when studying objects large and small. Barska 3 - 9x32 mm Plinker - 22 Illuminated Reticle Scope with Rings. Striking performance for your .22 and rimfire! Plinking or hunting, take aim with bright clear optics boasting the durability of scopes costing much more. Built to withstand the rough outdoors, the Plinker-22 Riflescope is waterproof, fogproof and shockproof. With fully coated optics, a 30/30 reticle, included 3/8" dovetail rings and scope caps, Plinker-22 is simply the best value you could aim for! All the details: Magnification: 3-9x; Objective lens: 32 mm; Waterproof / fogproof; 30/30 reticle; Exit pupil: 10.7-3.6; Fully coated optics; F.O.V.: 36' @ 100 yds. (3x); 13' @ 100 yds. (9x); Eye relief: 3 1/2"; Click value: 1/4"; Side adjustment windage and elevation; 1" tube diameter; Black matte finish; 11 1/2 ozs.; 12"l.; Mounting rings, lens covers and lens cloth included; Limited lifetime warranty.; Order yours today! WARNING: This item cannot be shipped to Canada. Please check your State, County and City laws for restrictions before ordering this product. Barska 3-9x32 mm Plinker-22 Illuminated Reticle Scope with Rings Features
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Bushnell PowerView 20x50 Super High-Powered Surveillance Binoculars
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DescriptionSuper high-powered surveillance binoculars for long-range detailed viewing. Great durability and performance in an attractive ?traditional? porro prism design. Non-slip rubber armor absorbs shock while providing a firm grip. Contemporary styling; includes neck strap and carrying case. Limited lifetime warranty. Bushnell PowerView binoculars offer the best of both worlds, combining contemporary styling and design with traditional Bushnell quality and durability. This particular PowerView binocular offers a 20x magnification--among the most powerful in its class--and a 50mm objective diameter. The multicoated optics, meanwhile, guarantee superior light transmission and brightness, helping you see just about any target, whether you're searching for birds or trying to get a better view of the football field. And users will love the patented InstaFocus focusing system, which holds your subject in sharp focus with a touch of the fingertip. Additional features include a porro prism system, a nonslip rubber armor housing that absorbs shock while providing a firm grip, a neck strap, and 9mm of eye relief. Specifications: Magnification: 20x Objective lens diameter: 50mm Size class: Standard Focus system: InstaFocus Prism system: Porro Prism glass: BK-7 Lens coating: Multi Field of view @ 1,000 yards: 170 feet Close focus distance: 45 feet Exit pupil: 2.5mm Eye relief: 9mm Eyecups: Fold down Waterproof/fogproof: No Adapts to tripod: Yes Weight: 30 ounces Warranty: Limited lifetime Features
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Bushnell Telescope Camera T-Adapter 1.25 inch
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DescriptionConnect your 35mm SLR Camera to any reflector or refractor telescope with a 1 1/4" accessory mount using this camera adapter. Turn your scope into a long lens for some real exciting close-ups! A T-Mount is required to connect your camera to this adapter |
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Celestron Photo / Video Tripod
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DescriptionThe Celestron 93606 photo / video tripod is designed specifically for Celestron spotting scopes but also works with a variety of photographic and video cameras. Adjustable legs and a swivel base help provide for precise and stable viewing. The Celestron® photo/video tripod is constructed with a central column with a geared elevator and adjustable tension and a 3-way panhead with a quick-release plate. It includes a horizontal and vertical bubble level and comes with a carrying case. Features
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Essential Optics Review for the Boards
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DescriptionAbout the Book This is the new Second Edition with chapters on low vision and vision rehabilitation to help readers prepare for the oral boards. There is a chapter on contact lenses by Ali Bukhamseen, OD, FAAO, FIACLE, Chief of Optometry Department, Saad Specialist Hospital, Al-Khobar, Saudi Arabia. Dr. Wilkinson is co-author of Protect Your Sight and author of Essential Optics Review for the Boards. Dr. Wilkinson is a clinical professor of ophthalmology in the Carver College of Medicine at the University of Iowa. The Department of Ophthalmology and Visual Sciences there is consistently ranked as one of the best ophthalmology teaching programs in the United States. Dr. Wilkinson serves on the Executive Committee of the American Optometric Association Low Vision Rehabilitation Section and the Planning Committee of the National Eye Institute’s National Eye Health Education Program. He has published extensively and spoken all over the globe concerning issues related to visual rehabilitation. He teaches optics to the ophthalmology residents at the University of Iowa and around the world. About the Author Dr. Wilkinson’s optics course at the University of Iowa helps residents survive the Ophthalmic Knowledge Assessment Program (OKAP) exam and boards. Now, in book form, his material will help residents and students ace optics. His book is concise and complete with over 150 questions to guide the student through optics. The book utilizes diagrams to teach and provides a high-yield review of optics that’s needed for success on the boards. Don’t take the boards without this book! |
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A Simple Guide to Telescopes, Spotting Scopes and Binoculars
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DescriptionThe world of telescopes, spotting scopes, and binoculars can be quite daunting to the uninitiated. Part buyer's guide, part instruction manual, this one-of-a-kind reference sorts out all the essential details. Not only will readers receive a foundation in such basics as telescope types, accessories, adjustments, and maintenance, they'll also discover tested techniques for successful viewing at sporting events, viewing landscapes and terrain, as well as basic star gazing. Finally, star charts and other astronomy references show readers how to navigate around the heavens and photograph specific objects in the night sky. Features
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Nick Jr. Go Diego Go! My Animal Friends Storybook and Spotting Scope (Rd Innovative Book and Player Format)
Sale Price: $99.94 |
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20-150 x 50mm Compact Spotting Scope
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DescriptionCombines the functions of a spotting scope and a telescope. Enjoy 20X, 30X, 40X, 75X, 110X and 150X magnification with included eyepieces and accessories. Easy viewing with 12in. metal tabletop tripod. 50mm objective lens, 450mm focal length. Accessories include 6mm and 20mm eyepieces, diagonal mirror, Barlow lens, 1.5X erecting eyepiece and tripod. |
