Friday, February 3, 2012

Sky

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Is It Illegal to Use a Green Laser for Astronomy Purposes?

by Father Sky

I'm planning on buying a 5mw green laser pointer to mount on my telescope. Is it illegal to use it at night, just pointing at the sky (not waving it around, obviously) or is it fine with the law? Must I have legal, signed documents to use for astronomy or must I be a scientist [...]

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Ecliptic New Zealand

by Father Sky

Four bright celestial beacons and a faint triangle of light follow the plane of the ecliptic as it arcs high through this southern hemisphere night skyscape. Seen on a July winter night from Lake Taupo on New Zealand's North Island, the line-up features Venus, Regulus (alpha star of Leo), Mars, and Saturn from lower left [...]

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The Milky Way Over Pulpit Rock

by Father Sky

Can a picture of the sky be relaxing? A candidate for such a picture might be the above image taken only last month from Cape Schank, Victoria, Australia. The frame is highlighted by a quiet lagoon, soft ground fog, two galaxies, and tens of thousands of stars. The rock cropping on the left may appear [...]

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A Giant Planet for Beta Pic

by Father Sky

A mere 50 light-years away, young star Beta Pictoris became one of the most important stars in the sky in the early 1980s. Satellite and ground-based telescopic observations revealed the presence of a surrounding outer, dusty, debris disk and an inner clear zone about the size of our solar system -- strong evidence for the [...]

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Celestron 31035 AstroMaster 76 EQ Reflector Telescope

by Father Sky

Quick and easy no-tool setup Permanently mounted StarPointer Erect image optics - Ideal for terrestrial and astronomical use Quick release dovetail attachment - no tool setup German Equatorial mount with Setting circles - to accurately locate and track sky objects Product DescriptionIf you're looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing, [...]

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Meade 16-Inch LX200-ACF Advanced Coma-Free Telescope With Tripod

by Father Sky

Product DescriptionAperture: 16-Inch. Focal Length: 4064mm. Focal Ratio: f/10. Zero Image-Shift Microfocuser, 2-Inch Diagonal Mirror w/UHTC, 26mm Series 5000 5-Element Plössl Eyepiece, 18v AC Adapter. The most widely used research quality telescope now features the most advanced optical system. Meade’s LX200-ACF brings Advanced Coma-Free (ACF) optics within reach of aspiring astronomers everywhere. Nearly every observatory [...]

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Orion SkyQuest XT4.5 Classic Dobsonian Telescope

by Father Sky

114mm aperture and 910mm focal length for views of lunar craters, planets, nebulas, and galaxies Sturdy Dobsonian mount and handy grip knob allow for effortless maneuvering Includes 2 eyepieces, finder scope, focuser, and FREE Starry Night astronomy software One-year limited warranty Product DescriptionWithout spending a fortune you can get a telescope that will not only [...]

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Pattern Asterisms: A New Way to Chart the Stars

by Father Sky

Product DescriptionSince the very beginning of astronomy, people have looked up sky and constructed patterns – the constellations – out of the almost random scattering of stars in the night sky. The fact that the constellations are still used to day reflects not their historical origins, but their usefulness in identifying bright stars in the [...]

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Celestron Sky Maps

by Father Sky

Ideal teaching tool for learning the night's sky Specially designed cover rotates to simulate the seasonal progression of celestial objects Illustrated reference section provides basic information and the visual characteristics of various types of stars, nebulae and galaxies Product Description Celestron Sky Maps are the ideal teaching guide for learning the night sky. You wouldn't [...]

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iOptron SmartStar-E 8500B Computerized AltAz Telescope Mount

by Father Sky

Computerized Alt-Azimuth Mount¿ The Cube- Hot Product 2008 by Sky and Telescope Magazine. 5-speed drive speed for precise tracking. Includes our GoToNova hand controller, the most intuitive controller on the market. 5,000 object database plus 256 user-defined objects. Includes stainless steel tripod and AC adaptor Payloads up to 11lbs Just click and it finds stars, [...]

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How Galileo’s Telescope Changed Astronomy

by Father Sky

Before Galileo turned his telescope toward the night sky the act of astronomy was pretty much an astrological pursuit where objects and motions of object in the sky were explained using ancient and archaic understandings of the universe and how it works. But he didnât just observe and note new objects in the [...]

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Astronomy for 4-10 Yrs Kids

by Father Sky

There is nothing like sitting outside in the dark with your kids and staring up at the night sky. Time stands still as you both ponder the enormity of the universe and your place within it. Poetry springs to mind as you try to explain to your child how people 100 years ago didn't have [...]

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Saturn's Moons Dione and Titan From Cassini

by Father Sky

What would it be like to see a sky with many moons? Such is the sky above Saturn. When appearing close to each other, moons will show a similar phase. A view with two of the more famous moons of Saturn in gibbous phase was captured last month by the robot spacecraft Cassini now orbiting [...]

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Mercury and Venus Over Paris

by Father Sky

Go outside tonight and see one of the more interesting planetary conjunctions of recent years. Just after sunset, the planets Mercury and Venus are visible quite near each other. Now Venus, being commonly discernible as one of the brightest objects in the sky, is frequently mistaken for an airplane. (Venus will set quite slowly, though.) [...]

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CCD Astrophotography: High-Quality Imaging From the Suburbs

by Father Sky

ISBN13: 9780387262413 Condition: NEW Notes: Brand New from Publisher. No Remainder Mark. Product DescriptionNot all amateur astronomers who live in a suburban location realize just how very effective a ‘chilled-chip’ astronomical CCD-camera and software can be at cutting through seemingly impenetrable light-pollution. CCD Astrophotography from the Suburbs details one man’s approach to the problem of [...]

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Venus and Mercury in the West

by Father Sky

In this twilight skyview, a windmill stands in silent witness to a lovely pairing of planets in the west. The picture was recorded on April 5 from Gallegos del Campo, Zamora, Spain. Venus (left) and Mercury (right) are near their much anticipated conjunction in the early evening sky. But even in the coming days, these [...]

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How Is Our Astronomy That We Know Today Related to the Ancient Greek One (With Gods and Rulers)?

by Father Sky

How did their mythology influence our astronomy today? Why were gods in the sky invented, to have people follow a rulers lead, is any of that documented (scholarly, not just an opinion)? But how did they know which planets are bigger than earth and where is that documented? I need to cite things. Tags: Earth, [...]

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The Belt of Venus Over the Valley of the Moon

by Father Sky

Although you've surely seen it, you might not have noticed it. During a cloudless twilight, just before sunrise or after sunset, part of the atmosphere above the horizon appears slightly off-color, slightly pink. Called the Belt of Venus, this off-color band between the dark eclipsed sky and the blue sky can be seen in nearly [...]

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Moonset Over Pleasant Bay

by Father Sky

It was a sky for the imagination. In the early evening last week, the sky illuminating the unaided eye was perhaps even more illuminating to the mind's eye. The unaided eye saw clouds framing the Moon setting over a calm and reflective bay, spruce trees lining the nearby shores, the Pleiades open star cluster (M45) [...]

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What's the Difference Between Astronomy and Astrophysics?

by Father Sky

Judging by the names, my guess would be: Astrophysics: Study of the physics and structure of the sky and what it contains (planets, etc). Astronomy: General study of the sky, planets, etc and general behaviour of it without going too deeply into the physical make-up of it. Tags: Astronomy & Astrophysics, guess, physical make-up difference [...]

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