astronomical seeing


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astronomical seeing

[‚as·trə′näm·ə·kəl ′sē·iŋ]
(astronomy)
References in periodicals archive ?
Astronomical seeing will be perfect and the sky black...."
In a recent issue of MNASSA (Koorts 2012), Willie Koorts described the ESO site testing in South Africa and discussed two issues: The decision of ESO not to build in South Africa and the astronomical seeing on the high veld.
The 13,000-foot Mauna Kea offers some of the best astronomical seeing in the world.
He also discusses considerations for choosing the right telescope and camera for planetary photography, and provides a detailed analysis of astronomical seeing conditions and modern forecasting tools.
With Jupiter slipping into trees on my western skyline and Saturn hanging low in the southeast during the evening, I spent much of my time exploring the Moon and hunting down interesting double stars, with magnifications as high as 420x (using a 5-mm eyepiece) when the astronomical seeing would permit.
causes of smearing are the usual: astronomical seeing and
Images snapped into focus, with crisp detail visible during moments of good astronomical seeing. Particularly noteworthy was the visibility of low-contrast features on the ball of Saturn and within the broad equatorial belts of Jupiter.
No one is quite sure why, but Las Campanas has some of the best astronomical seeing on the planet.
Then, four hours after sunset, I visually gauged the amount of scintillation and image movement to determine the quality of astronomical seeing. I accomplished this by viewing a pair of stars using my telescope at 190[yen], one at 45[degree sign] altitude, and another at the zenith.
Even on the hottest summer days when the building's interior becomes stifling, opening the roof at sunset allows everything to reach ambient temperature by the time twilight ends - an important consideration for decent astronomical seeing.
Advances in hardware and software give CCD users a way to battle astronomical seeing and improve the quality of their images.
I usually take a dozen images of an object, hoping that several will be during those split-second moments of good astronomical seeing.
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