... 11.03.1996 . ... A stunning map of this distant, diminutive planet , the first based on direct images, was revealed late last week in a Hubble Space Telescope press release . Above are two opposite hemisphere views of the computer constructed map of Pluto's surface (north is up). ... The map is based on Hubble images made when Pluto was a mere 3 billion miles distant. ... Publications with keywords: Pluto - Hubble space telescope . Publications with words: Pluto - Hubble space telescope . ...

... 2010 April 16 . Bright Points on the Quiet Sun . ... Explanation: Up close, the solar surface is a striking patch work of granules in this very high resolution picture of the quiet Sun . ... Constantly present on the solar surface, the bright points do not seem to be related to sunspots that come and go with the magnetic solar cycle . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . A service of: ASD at NASA / GSFC . ...

... Pluto's orbit is also highly inclined -- tilted 17 degrees to the orbital plane of the other planets. ... Ground-based observations indicate that Pluto's surface is covered with methane ice and that there is a thin atmosphere that might freeze and fall to the surface as the planet moves away from the Sun. ... This is the first image-based surface map of the solar system's most remote planet, Pluto. ... This is the first surface map of Charon, the moon of the solar system's most remote planet, Pluto....

... Pluto's orbit is also highly inclined -- tilted 17 degrees to the orbital plane of the other planets. ... Ground-based observations indicate that Pluto's surface is covered with methane ice and that there is a thin atmosphere that might freeze and fall to the surface as the planet moves away from the Sun. ... This is the first image-based surface map of the solar system's most remote planet, Pluto. ... This is the first surface map of Charon, the moon of the solar system's most remote planet, Pluto....

... R.S. de Jong, A.C. Seth, D.J. Radburn-Smith, E.F. Bell, T.M. Brown, J.S. Bullock, S. Courteau, J.J. Dalcanton, H.C. Ferguson, P. Goudfrooij, S. Holfeltz, B.W. Holwerda, C. Purcell, J. Sick, D.B. Zucker, 2007, ApJL 667, 49 . ... S.A. Kassin, R.S. de Jong, B.J. Weiner 2005, ApJ 643, 804 . ... I. Near-Infrared and Optical Broadband Surface Photometry of 30 Galaxies . ... Eric F. Bell and Roelof S. de Jong 2001, ApJ 550, 212-229 . ... Roelof S. de Jong 1996, A Suppl. ... Back to Roelof's home page () . ...

... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... The physical and chemical processes in translucent clouds are controlled by the interstellar radiation field (ISRF) which can penetrate through the whole cloud although at a reduced rate into the deepest parts. ... Optical surface brightness images provide important information for the investigation of the internal structure of translucent clouds or cloud regions. ...

Armagh Observatory, 21 December 2001: . ... The Armagh Observatory's contribution, led by astronomers Simon Jeffery and Gerry Doyle , is to develop new computational tools to study the atmosphere of the Sun and other stars. ... Computers will communicate with one another using the grid, and computing power will become a commodity just like electricity. ... FOR FURTHER INFORMATION CONTACT: Simon Jeffery or Mark Bailey at the Armagh Observatory (Tel.: ... WWW contact: webmaster@star.arm.ac.uk . ...

... OCR by H.Andernach 1/96, to be proof-read) This is the first of a series of papers presenting results of a 10-GHz radio continuum survey of the galactic plane region using the 45-m telescope at Nobeyama. ... Weak Nonthermal Sources: A comparison with the Bonn S-GHz survey reveals a number of weak nonthermal sources near the galactic plane. ... For this reason we conducted a survey of the galactic plane region at 10 GHz using the 45-m radio telescope at the Nobeyama Radio Observatory (NRO). ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... Astronomers Demonstrate a Global Internet Telescope . ... European and US radio astronomers have demonstrated a new way of observing the Universe – through the Internet! ... This allows imaging of the objects with unprecedented detail, and in real-time, which would have been impossible only a few years ago. ... Surrounded by clouds of dusty gas and emitting strongly in radio waves, the object is poised at the end of its life, heading toward a cataclysmic explosion known as a 'supernova'. ...

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . THE ANCIENT UNIVERSE . c) The Age of Light from the Most Distant Galaxies: The "Time Machine" Effect . ... Thus we are actually seeing these galaxies not as they are today, but as they were billions of years ago. ... The Universe: An Overview | ... The Ancient Universe - The Age of the Expanding Universe - The Age of the Oldest Stars - The Age of Light From Distant Galaxies - The Age of the Chemical Elements | ...

... Posts tagged ?confidence region? ... Today?s arxiv-stat email included papers by Poetscher and Leeb, who have been working on post model selection inference. Sometimes model selection is misled as a part of statistical inference. Simply, model selection can be considered as a step prior to inference. ... ArXiv] Post Model Selection, Nov. ... Tags: bias , confidence interval , confidence region , coverage , Errors , Estimation , inference , Model Selection . ... Comment . ... Entries RSS . ...

... This is the truly fun part, observing molecular and atomic gas in star-forming regions with a variety of telescopes. Depending on the temperature and density of the gas, different observations are necessary to study the components of star-forming regions. Because stars form in cool gaseous regions, I most often use radio and sub-mm observations, but I also look for opportunities to make complementary observations using infrared and optical telescopes. ... Copyright 2015 Adele Plunkett. ...

... 13, Moscow 119992, Russian Federation, e-mail: busarev@sai.msu.ru; 2 Research Institute Crimean Astrophysical Observatory, p/o Nauchnyi, Crimea 334413, Ukraine, e-mail: prok@crao.crimea.ua Summary: We propose a combined method of astronomical investigations of small or distant planets incorporating registration of a set of integral spectra of an object and their frequency analysis. ... An application of the method is shown on example of asteroid 21 Lutetia. ... 6] Busarev V. V. (2002), Solar Sys. ...

... Planet Ziggy seems to be located in the outer regions of an elliptical galaxy, or perhaps in a globular cluster orbiting such a galaxy. ... We have not been able to detect any spiral galaxies elsewhere in the sky. ... Iif they are too small for their gravity to achieve this. force holding the two objects together ­ strongly suggests that these objects are Page 1 The Milk Stain No milky-way is seen. ... We are calling it the Milk Stain. This could be an elliptical galaxy or a globular cluster. ...

... For more distant stars we must use other techniques. ... Hence if we see a distant galaxy and can pick out any cepheids lying within it, we can calculate its distance. ... Here then is another method to gauge the size of the Universe and there are yet more. volume at high enough temperature a nuclear fusion reaction sweeps across the white dwarf's surface and eventually we will see a spectacularly bright new star (hence nova) in our skies. ... Why is this relevant to the size of the Universe? ...

... Optical: Large filamentary loop, brightest to the NE, not well defined to the S or W. X-ray: Shell in soft X-rays. ... VLA observations of CL4. ADS . ... 1986, ApJ, 306, 266. ... Greidanus & Strom 1992, A&A, 257, 265. ... Shull & Hippelein 1992, ApJ, 383, 714. ... ROSAT and optical observations of W. ADS . ... ROSAT observations of N. ADS . ... ASCA observations of compact X-ray source in S. ADS . ... 1999, A&AS, 137, 7. ... 2002, A&A, 389, L61. ... Optical and ROSAT observations of region in SW. ...

... Meta Index / Home Page / Description / Specifying source region shapes . When radiusstyle =`contour', the task calculates the source region shape as an elliptical locus which approximates the contour of the PSF at a given flux value. ... Clearly, in order to calculate the shape of such a flux contour, it is necessary firstly to normalize the PSF to the source brightness and secondly to determine the flux level (in `brightness' units per pixel) at which to find the contour. ...

... We present a computer program for modelling energy flux distribution and light curves of eclipsing binaries from far ultraviolet to infrared regions. The Roche model is assumed. Proximity effects of components (reflection of radiation and surface gravity darkening) are taken into account. ... Figure 1: The surface temperature distribution for Algol A-B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation effect. ...