astronomy of the korku tribe of india
... As regards the Sun and Moon, the Korku have an interesting tale. They say that amongst all the gods who influence our lives (see the creation myth below), only the Sun and the Moon are visible. Both are sons of a common mother. At one time the mother sent her children to attend a religious festival ...
... As regards the Sun and Moon, the Korku have an interesting tale. They say that amongst all the gods who influence our lives (see the creation myth below), only the Sun and the Moon are visible. Both are sons of a common mother. At one time the mother sent her children to attend a religious festival ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... shown in Figs 3, 7 and 8. While overall, the innards of Crater appear resolved in the ACAM images, the resulting photometry does suffer from blending problems to some extent. Therefore, in the following analysis we use two versions of the WHT stellar catalogues. First, the most stringent sample (sam ...
... shown in Figs 3, 7 and 8. While overall, the innards of Crater appear resolved in the ACAM images, the resulting photometry does suffer from blending problems to some extent. Therefore, in the following analysis we use two versions of the WHT stellar catalogues. First, the most stringent sample (sam ...
Notes on Stars
... us and the object. For distant stars and extragalactic objects, the so-called Galactic infrared cirrus is a good indicator of extinction as it is produced by the thermal emission of the dust in the MIlky Way. The extinction is maximal in the galactic plane, and minimal perpendicular to it. The inter ...
... us and the object. For distant stars and extragalactic objects, the so-called Galactic infrared cirrus is a good indicator of extinction as it is produced by the thermal emission of the dust in the MIlky Way. The extinction is maximal in the galactic plane, and minimal perpendicular to it. The inter ...
BBC NEWS 15 July 2015 PLUTO: What jhave we learnt so far? Now
... is all in one piece, researchers can look forward to a "waterfall" of images and data from the strange, distant world over the next 16 months. But even though just a couple of pictures from the dwarf planet have been released so far, scientists are learning more from these than they have in years of ...
... is all in one piece, researchers can look forward to a "waterfall" of images and data from the strange, distant world over the next 16 months. But even though just a couple of pictures from the dwarf planet have been released so far, scientists are learning more from these than they have in years of ...
NASA`s IRIS Telescope Offers First Glimpse of Sun`s Mysterious
... · The Delta Aquariid meteor shower should be in its broad maximum all week. This and other weak, long-lasting July showers with radiants in the southern sky increase the chance that any meteor you see will be flying out of the south. See article. Saturday, July 27 · With the Moon now gone from the e ...
... · The Delta Aquariid meteor shower should be in its broad maximum all week. This and other weak, long-lasting July showers with radiants in the southern sky increase the chance that any meteor you see will be flying out of the south. See article. Saturday, July 27 · With the Moon now gone from the e ...
Report from the Subaru Telescope for External
... HSC is available for open use since March 2014. The combination of a larger mirror, a wide field of view, and sharp imaging represents a giant step into a new era of observational astronomy. A new adaptive optics system with 188 element curvature sensors (AO188) and Fiber Multi Object Spectrograph ( ...
... HSC is available for open use since March 2014. The combination of a larger mirror, a wide field of view, and sharp imaging represents a giant step into a new era of observational astronomy. A new adaptive optics system with 188 element curvature sensors (AO188) and Fiber Multi Object Spectrograph ( ...
But Still, It Moves: Tides, Stellar Parallax, and Galileo`s
... observations, as follows: (i) The stars are all at the same distance from the Sun; they lie on a solar-centric sphere. Galileo measured Mizar’s two components to be separated by ∆ = 15 arc-seconds. Assuming conservatively that Galileo could detect variations of this value, calculations like those in ...
... observations, as follows: (i) The stars are all at the same distance from the Sun; they lie on a solar-centric sphere. Galileo measured Mizar’s two components to be separated by ∆ = 15 arc-seconds. Assuming conservatively that Galileo could detect variations of this value, calculations like those in ...
Activity 1 - National Science Teachers Association
... Project Earth Science: Astronomy is based on the concept of the uniqueness of Earth among all the planets in the solar system. Concepts and Activities were chosen that elaborate on this theme. This volume focuses on planetary astronomy and aims to give students a sense of viewing Earth from some poi ...
... Project Earth Science: Astronomy is based on the concept of the uniqueness of Earth among all the planets in the solar system. Concepts and Activities were chosen that elaborate on this theme. This volume focuses on planetary astronomy and aims to give students a sense of viewing Earth from some poi ...
StellarManual
... distance of 10 parsecs from the Earth, which means that absolute magnitude is also an implicit measure of intrinsic brightness and how much energy a star is releasing per second (luminosity). Thus: Avior (m = 1.9) and Alkaid (m = 1.9) appear to be the same brightness, but Avior (M = -4.8) emits more ...
... distance of 10 parsecs from the Earth, which means that absolute magnitude is also an implicit measure of intrinsic brightness and how much energy a star is releasing per second (luminosity). Thus: Avior (m = 1.9) and Alkaid (m = 1.9) appear to be the same brightness, but Avior (M = -4.8) emits more ...
ASTRONOMICAL BINOCULARS
... latitude at which you are standing on Earth. EPHEMERIS - The ephemeris of a planet or the sun or the moon is a table giving the coordinates of the object at regular intervals of time. The coordinates will be listed using declination and right ascension. Other information such as distance and magnitu ...
... latitude at which you are standing on Earth. EPHEMERIS - The ephemeris of a planet or the sun or the moon is a table giving the coordinates of the object at regular intervals of time. The coordinates will be listed using declination and right ascension. Other information such as distance and magnitu ...
Star 1 A star is a massive, luminous ball of plasma held together by
... orbital elements. The first solution to the problem of deriving an orbit of binary stars from telescope observations was made by Felix Savary in 1827.[30] The twentieth century saw increasingly rapid advances in the scientific study of stars. The photograph became a valuable astronomical tool. Karl ...
... orbital elements. The first solution to the problem of deriving an orbit of binary stars from telescope observations was made by Felix Savary in 1827.[30] The twentieth century saw increasingly rapid advances in the scientific study of stars. The photograph became a valuable astronomical tool. Karl ...
2 Justification and benefits in joining TMT
... the universe? Astonishingly, astronomers are now on the verge of answering these fundamental questions with the next generation extremely large class telescopes such as the Thirty Meter Telescope (TMT). The Chinese participation in the TMT will place China in the forefront of astronomy for many deca ...
... the universe? Astonishingly, astronomers are now on the verge of answering these fundamental questions with the next generation extremely large class telescopes such as the Thirty Meter Telescope (TMT). The Chinese participation in the TMT will place China in the forefront of astronomy for many deca ...
Thinking Outside the Sphere
... revolutionized astronomy by transforming the concentric spheres model into a highly effective tool for predicting the motions of the planets. His epic mathematical achievement was simply called the Almagest, or “great work.” This fifteenth century epitome of his book is one of the most highly regard ...
... revolutionized astronomy by transforming the concentric spheres model into a highly effective tool for predicting the motions of the planets. His epic mathematical achievement was simply called the Almagest, or “great work.” This fifteenth century epitome of his book is one of the most highly regard ...
Double Star Observations - minorplanetobserver.com
... 4. Double click on the first file in the list. This loads the image into Canopus. Each time an image is loaded, the highlight automatically moves to the next item in the list so that once you've measured the just selected image, you can quickly load the next image in the list. As each image is load ...
... 4. Double click on the first file in the list. This loads the image into Canopus. Each time an image is loaded, the highlight automatically moves to the next item in the list so that once you've measured the just selected image, you can quickly load the next image in the list. As each image is load ...
Observational astronomy
Observational astronomy is a division of the astronomical science that is concerned with recording data, in contrast with theoretical astrophysics, which is mainly concerned with finding out the measurable implications of physical models. It is the practice of observing celestial objects by using telescopes and other astronomical apparatus.As a science, the study of astronomy is somewhat hindered in that direct experiments with the properties of the distant universe are not possible. However, this is partly compensated by the fact that astronomers have a vast number of visible examples of stellar phenomena that can be examined. This allows for observational data to be plotted on graphs, and general trends recorded. Nearby examples of specific phenomena, such as variable stars, can then be used to infer the behavior of more distant representatives. Those distant yardsticks can then be employed to measure other phenomena in that neighborhood, including the distance to a galaxy.Galileo Galilei turned a telescope to the heavens and recorded what he saw. Since that time, observational astronomy has made steady advances with each improvement in telescope technology.A traditional division of observational astronomy is given by the region of the electromagnetic spectrum observed: Optical astronomy is the part of astronomy that uses optical components (mirrors, lenses and solid-state detectors) to observe light from near infrared to near ultraviolet wavelengths. Visible-light astronomy (using wavelengths that can be detected with the eyes, about 400 - 700 nm) falls in the middle of this range. Infrared astronomy deals with the detection and analysis of infrared radiation (this typically refers to wavelengths longer than the detection limit of silicon solid-state detectors, about 1 μm wavelength). The most common tool is the reflecting telescope but with a detector sensitive to infrared wavelengths. Space telescopes are used at certain wavelengths where the atmosphere is opaque, or to eliminate noise (thermal radiation from the atmosphere). Radio astronomy detects radiation of millimetre to dekametre wavelength. The receivers are similar to those used in radio broadcast transmission but much more sensitive. See also Radio telescopes. High-energy astronomy includes X-ray astronomy, gamma-ray astronomy, and extreme UV astronomy, as well as studies of neutrinos and cosmic rays.Optical and radio astronomy can be performed with ground-based observatories, because the atmosphere is relatively transparent at the wavelengths being detected. Observatories are usually located at high altitudes so as to minimise the absorption and distortion caused by the Earth's atmosphere. Some wavelengths of infrared light are heavily absorbed by water vapor, so many infrared observatories are located in dry places at high altitude, or in space.The atmosphere is opaque at the wavelengths used by X-ray astronomy, gamma-ray astronomy, UV astronomy and (except for a few wavelength ""windows"") far infrared astronomy, so observations must be carried out mostly from balloons or space observatories. Powerful gamma rays can, however be detected by the large air showers they produce, and the study of cosmic rays is a rapidly expanding branch of astronomy.For much of the history of observational astronomy, almost all observation was performed in the visual spectrum with optical telescopes. While the Earth's atmosphere is relatively transparent in this portion of the electromagnetic spectrum, most telescope work is still dependent on seeing conditions and air transparency, and is generally restricted to the night time. The seeing conditions depend on the turbulence and thermal variations in the air. Locations that are frequently cloudy or suffer from atmospheric turbulence limit the resolution of observations. Likewise the presence of the full Moon can brighten up the sky with scattered light, hindering observation of faint objects.For observation purposes, the optimal location for an optical telescope is undoubtedly in outer space. There the telescope can make observations without being affected by the atmosphere. However, at present it remains costly to lift telescopes into orbit. Thus the next best locations are certain mountain peaks that have a high number of cloudless days and generally possess good atmospheric conditions (with good seeing conditions). The peaks of the islands of Mauna Kea, Hawaii and La Palma possess these properties, as to a lesser extent do inland sites such as Llano de Chajnantor, Paranal, Cerro Tololo and La Silla in Chile. These observatory locations have attracted an assemblage of powerful telescopes, totalling many billion US dollars of investment.The darkness of the night sky is an important factor in optical astronomy. With the size of cities and human populated areas ever expanding, the amount of artificial light at night has also increased. These artificial lights produce a diffuse background illumination that makes observation of faint astronomical features very difficult without special filters. In a few locations such as the state of Arizona and in the United Kingdom, this has led to campaigns for the reduction of light pollution. The use of hoods around street lights not only improves the amount of light directed toward the ground, but also helps reduce the light directed toward the sky.Atmospheric effects (astronomical seeing) can severely hinder the resolution of a telescope. Without some means of correcting for the blurring effect of the shifting atmosphere, telescopes larger than about 15–20 cm in aperture can not achieve their theoretical resolution at visible wavelengths. As a result, the primary benefit of using very large telescopes has been the improved light-gathering capability, allowing very faint magnitudes to be observed. However the resolution handicap has begun to be overcome by adaptive optics, speckle imaging and interferometric imaging, as well as the use of space telescopes.Astronomers have a number of observational tools that they can use to make measurements of the heavens. For objects that are relatively close to the Sun and Earth, direct and very precise position measurements can be made against a more distant (and thereby nearly stationary) background. Early observations of this nature were used to develop very precise orbital models of the various planets, and to determine their respective masses and gravitational perturbations. Such measurements led to the discovery of the planets Uranus, Neptune, and (indirectly) Pluto. They also resulted in an erroneous assumption of a fictional planet Vulcan within the orbit of Mercury (but the explanation of the precession of Mercury's orbit by Einstein is considered one of the triumphs of his general relativity theory).