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from article Capricornus

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Modern boundaries of the constellation Capricornus, the Sea Goat. The celestial equator is 0° of declination, which corresponds to celestial latitude. Right ascension corresponds to celestial longitude, with each hour of right ascension representing…

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from article Cataclysmic variable

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Visualizations of the components of cataclysmic variables. The components are not drawn strictly to scale, for ease of viewing. (a) Accretion disk system, the most common type. The shape of the cool star is distorted due to the gravitational…

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from article Pleiades

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The Pleiades. (Lick Observatory photograph)

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from article SS 433

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Doppler shifts of the “moving” Hα lines of (a) the approaching jet and (b) the receding jet of SS 433 versus the precession phase. The Doppler shift gives the ratio v/c, where v is the approach or recession velocity and c is the speed of light. The…

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from article SS 433

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Radio image of SS 433 obtained in 2003 with the Very Large Array. A contour plot of the intensity of radio emission is superimposed on a pixel image. The binary core is the brightest spot in the center, from which matter is outflowing in two…

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from article SS 433

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X-ray observations of SS 433 performed in 2000 with the Chandra X-ray Observatory. (a) X-ray image. The binary core of SS 433 is indicated with a cross and is not bright due to an instrumental effect. The lobes of the x-ray jets are visible on…

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from article Radio telescope

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The 110 by 100 m (361 by 328 ft) fully steerable radio telescope in Green Bank, West Virginia. (Photo courtesy of National Radio Astronomy Observatory/Associated Universities, Inc./National Science Foundation)

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from article Radio telescope

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The 1000-ft (305-m) fixed spherical dish of the National Astronomy and Ionosphere Center (NAIC) near Arecibo, Puerto Rico. (Photo courtesy of NAIC/National Science Foundation-Arecibo Observatory)

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from article Radio telescope

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The 27-element Karl G. Jansky Very Large Array of the National Radio Astronomy Observatory (NRAO) near Socorro, New Mexico, in its most compact configuration. (Photo courtesy of National Radio Astronomy Observatory/Associated Universities,…

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from article Radio telescope

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Artist's conception of the 10-element Very Long Baseline Array. Signals from each of the 10 antennas are independently recorded on computer disks, which are then sent to the array headquarters in Socorro, New Mexico for processing to form radio…

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