Seeing
Related Category: Astronomy: General
in astronomy, the clarity with which stars and other celestial objects can be observed. It is primarily determined by the atmosphere of the earth.
Seeing
The word seeing can mean more than one thing:
* In common usage, the word means visual perception
* In astronomy, seeing is a technical term related to the blurring effects of air turbulence in the atmosphere ...
Seeing Yellow
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Saturn's largest moon, Titan, is partially hidden by the planet's rings in this recent view from the Cassini orbiter. The craft was viewing the rings almost edge-on, so they appear as a thin sheet.
seeing
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Seeing dark matter for the first time
Astronomers have used the Very Large Telescope (VLT) and the Hubble Space Telescope (HST) to directly image and obtain a spectrum from a dark matter object for the first time, ...
Seeing
This entry contributed by Dana Romero
Seeing is a term used to express the effects of the atmosphere on telescopic observation.
Seeing Forecast for Astronomical Purposes at the Canadian Weather Office of Environment Canada.
Astronomical Seeing, an exceptionally in depth page by Jeffrey Beish.
Seeing in the Dark premieres on Wednesday, September 19 on PBS stations around the United States. Most stations will show the film at 8 p.m., but check your local listings for the exact time and date.
Atmospheric seeing varies considerably based on location, weather conditions and time of day. The average seeing in Muana Kea, a prime location, is about 0.5 arcseconds, while the Mount Wilson observatory has seeing in the 1 arcsecond range.
Seeing
Variations in density of the atmosphere in a line of sight with an object cause intensity fluctuations.
Seeing Comets
COMETS SEEING FAMOUS EXPLORATION STARDUST ROSETTA DEEP IMPACT HALE-BOPP DEEP SPACE 1
DID A COMET BRING SARS TO EARTH? COULD A COMET HIT EARTH? COMET RESOURCES ...
Seeing the Solar System
You don't need your own Voyager to see the solar system. You can see much of it from your own back yard.
Seeing
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Seeing Deeper: The Webb Space Telescope
This image shows an artist's concept of the James Webb Space Telescope. Image Credit: NASA
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seeing disk Roughly circular region on a detector over which a star's pointlike images is spread, due to atmospheric turbulence.
seismic wave A wave that travels outward from the site of an earthquake through the Earth.
seeing
the quality of observing conditions induced by turbulence in Earth's atmosphere, which blurs the images of astronomical objects
semimajor axis ...
Seeing
Describes the blurring of a stellar (point-like) image due to turbulence in the Earth's atmosphere, both at high altitudes and within the telescope dome.
Seeing - The steadiness of the atmosphere that allows fine details to be seen in celestial objects. If the seeing is good, detail is not blurred as much by atmospheric scintillation.
Seeing
Atmospheric conditions on a given night When the atmosphere is unsteady, producing blurred images the seeing is considered poor
Seismic Waves ...
Seeing - A measure of the blurring of the image of an astronomical object caused by turbulence in the Earth's atmosphere ...
Seeing- a measure of the steadiness of the atmosphere; good seeing is essential to using high magnification ...
THE SEEING SCALES
Over the years visual observers have derived many schemes to describe "astronomical seeing" in a quantitative manner. First, the scales used by many in the Association of Lunar and Planetary Observers (A.L.P.O.).
Sightseeing and attractions
There are a number of sightseeing attractions in the island. Historic St. George's is a designated World Heritage Site
World Heritage Site ...
seeing: a measure of the atmosphere's stability. Poor seeing makes objects waver or blur when viewed in a telescope at high magnification. The best seeing often occurs on hazy nights, when the sky's transparency is poor.
seeing - (n.)
The steadiness of the earth's atmosphere as it affects the resolution that can be obtained in astronomical observations. Good seeing corresponds to a steady atmosphere, and bad seeing corresponds to an unsteady atmosphere.
Seeing well is both an art and a skill. You need to spend lots of quality time with your telescope. The more you look, the more you will see, and the better you will get.
Seeing a broad iron K line meant that ASCA was probing deeper into the region around a black hole than ever before, even deeper than what Hubble probes.
Seeing real panoramic camera pictures from Mars, instead of just from tests of the camera inside laboratories or spacecraft assembly areas, put the camera into new perspective for Bell.
Seeing a need for longer duration studies, in 1963 Riccardo Giacconi and Herb Gursky proposed the first orbital satellite to study X-ray sources. NASA launched their Uhuru satellite in 1970,[22] which led to the discovery of 300 new X-ray sources.
Seeing double: this image shows a double-ring impact basin, with another large impact crater on its south-southwestern side. Image: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington.
Seeing these systems at low redshift allows a reasonable test for matches with galaxies near the QSO line of sight.
Seeing
The condition of the Earth's atmosphere at a particular time. If the sky is clear astronomers say there is good seeing.
Selenography ...
"Seeing" is the term used by observers for judging the steadiness of the earth's atmosphere. During nights of good seeing the earth's atmosphere is free of air turbulence allowing for steady and sharp stellar and planetary images.
All Seeing Eye
Isis, Iris, Pupil, Rods and Cones, Masonic Symbolism
Caduceus Rod of Hermes, DNA
Alchemy ...
S-6. Seeing the Sun in a New Light
S-7. The Energy of the Sun
Peripheral Subjects related to section S-7 above: ...
Also "seeing" or atmosphere turbulence will have an effect on how well you can see objects. Turbulence in the air caused by radiating heat as the ground and surrounding areas cool down from the day's sun can cause loss of visibility.
Instead of seeing a single peak at four cycles per day, we see a forest of peaks separated by one cycle per day -- the separation of the data windows. This is known as aliasing.
The ancients, seeing the planets as just bright lights looking much like the stars themselves, did not realize the essential differences between stars and the planets.
seeing (NASA SP-7, 1965) A blanket term long used by astronomers for the disturbing effects produced by the atmosphere upon the image quality of an observed celestial body. Also called astronomical seeing.
NASA center overseeing the research, development, and implementation of three primary areas essential to space flight: reusable space transportation systems, generation and communication of new scientific knowledge, ...
M6 (tested seeing low over horizon, bright orange star on one side of the cluster of blue stars)
Trifid Nebula (beautifully defined dust lanes)
Ink Spot (very low over horizon but still clearly "a hole" in the Milky Way) ...
As the chances of seeing this star at its maximum are therefore not very likely, you might find Burnham's finder's chart (p. 559) of some use.
ALMA is capable of seeing cosmic dust, the cold ashes from exploded stars. Like the black outlines in a child's coloring book, cosmic dust and cold gas trace out structures inside galaxies, even if we can't see those galaxies clearly.
Scattering: Seeing the Microscopic Among the Giants (PDF, 283 KB): Participants observe that reflection from light comes from the objects around us.
Even when the colors are fairly similar, the eye enhances them, rendering close pairs like second magnitude Algieba (Leo's Gamma star) still quite lovely, some observers seeing them as orange and yellow, others yellow and greenish.
The Aristotelian professors, seeing their vested interests threatened, united against him. They strove to cast suspicion upon him in the eyes of ecclesiastical authorities because of contradictions between the Copernican theory and the Scriptures.
This effect is called seeing. Typically the twinkling and blurring smears out the images by anything from half an arcsecond up to several arcseconds. Let's consider what that would mean. A typical wavelength of light is around 500 nanometers.
Of course, we have been seeing evidence of damage on other worlds. Only recently have we been lucky enough to see a major impact on a world. In 1993, a comet named Shoemaker-Levy 9 (SL9 for short) was discovered.
Seeing fine detail in celestial objects, or just seeing faint ones at all, requires practice and special knowledge.
Apart from the difficulty of seeing how the bubbles could arise, there is a formidable objection, mentioned by E. W. Briicke (Pogg. Ann. 88, 363), that the blue of the sky is a much richer colour than the blue of the first order.
At this wavelength we are seeing the light from billions of stars, particularly the largest, brightest ones. Note the dark bands where vast clouds of dust block our view of more distant objects.
What you are seeing isn't the ship moving. The camera system is doing all those moves with the ship and all the different light passes. Then we come back and shut off all the lights.
So, in New Zealand we effectivly lose out on seeing 50% of the meteors before we start. But it is still a shower worth looking at.
The first observer opens the shutter of his lamp, and, the second, upon seeing the light, immediately opens the shutter of his own lantern.
Had Shakespeare lived in today's world - seeing streetlights as ubiquitious as the stars once were in his day - he might have penned, "solace in the shooting stars.
From time to time astronomers would report seeing visual markings in the Neptunian atmosphere, ...
As if this weren't bad enough, it also had poisonous breath and it was so hideous that it caused most people to die of fear from simply seeing it. One of Hercules' great tasks was to kill this monster.
However, your best chance for seeing meteors is during a meteor shower. These are not confined to a single night but are spread out over a period of days or weeks with a peak at a given time.
Recall that because of the lookback time effect we are seeing the quasar as it was many billions of years ago when the universe was younger. Since the universe is getting bigger with time, it follows that it must have been smaller long ago.
Pride in what they had achieved together with anxiety at seeing the fruit of their labours, an ingenious little remote control laboratory, perched on top of a rocket brimming with highly flammable fuel... and somebody was about to light the fuse.
 See also: Light, Time, Earth, Field, Second
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