... Europa: Ridges and Rafts on a Frozen Moon . ... 10.09.1998 . ... Credit Copyright: Galileo Project , University of Arizona , JPL , NASA Explanation: The large Jovian moon Europa may harbor liquid water beneath its frozen crust . ... The eerie terrain of grooved linear ridges and crustal plates which seem to have broken apart and rafted into new positions could indicate subsurface water or slush. ... Publications with keywords: Jupiter - Europa . Publications with words: Jupiter - Europa . ...

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• Астронет > Europa: Ridges and Rafts on a Frozen Moon
• Bright Points on the Quiet Sun
• Bright Spots Resolved in Occator Crater on Ceres

... If I need to observe a field containing bright stars, do I risk damage to the NICMOS detector by saturating it? ... NICMOS . ... Detectors . ... Observing Strategies . ... A.: The NICMOS Instrument Science Reports Number 24 and Number 23 present results of the analysis of persistence from On-Orbit data and Thermal Vacuum data. ...

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• Making HST Pictures: Illustrations
• Absorption line spectra of the UV bright z=2.4 QSO HE 1122-1649

... Things to think about ­ INTMIT, deconvolution Lister Staveley-Smith ­ X-ALFA March 15, 2003 1 HIPASS Bright Galaxy Catalog (BGC) Koribalski et al. ... Arecibo beam Parkes beam HIPASS spectrum HIPASS J0620-57 = ESO161-G001/NGC 2222/NGC 2221 (ATCA observation) Lister Staveley-Smith ­ X-ALFA March 15, 2003 8 The ALFA advantage ­ an example ! Cosmic variance for HIPASS BGC dwarfs #10 Mpc cells Dwarf galaxies Lister Staveley-Smith ­ X-ALFA March 15, 2003 9 Cosmic Variance in HIPASS BGC Zwaan et al. ...

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• I-GALFA View of a Galactic Tangent Region
• HIPASS Results and Lessons
• HISA Poster for the 195th Meeting of the AAS, January, 2000

Next: NGC 3034 (M 82) Up: The Group of Nearby Previous: NGC 1365 . NGC 1808 is a peculiar southern spiral galaxy and rather nearby example of nuclear starburst activity ( L ); for a comprehensive overview see Koribalski (1993). ... Figures 5 and 6 display the overall H I distribution and velocity field of the galaxy NGC 1808. ... Figure 5: H I distribution of the starburst galaxy NGC 1808. Figure 6: H I mean velocity field of NGC 1808 (for a full description see Koribalski 1993). ...

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• Do Starburst galaxies contain buried AGN?
• Brightness Units
• HIPASS Bright Galaxy Catalog

The CHIANTI database consists of 4 primary ASCII files for each ion in the database. contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies. References: %Observed energy levels (2): Feldman, U., Curdt, W., Landi, E., Wilhelm, K., 2000, ApJ, 544, 508 %Observed energy levels (3,4,5): Sandlin, G.D., Bruekner, G.E., Scherrer, V.E., Tousey, R., 1976, ApJ, 205, L47 %Observed energy levels (6 to 15): Fuhr, J.R., et al., ...

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• Arcetri Solar Physics Group: Solar Activity

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > How can I run the pipeline when there are no bright objects in the individual image? ... Observing with ESO Telescopes . ... The default use of the visir_img_combine recipe of the VISIR pipeline is with the "ref" option set to false. ... The VISIR pipeline will create the combination of the nodded images using the ESO SEQ CUMOFFSETX and ESO SEQ CUMOFFSETY offset information in the fits file headers. ...

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• The Very Large Telescope Project
• ESO - Thesis Topic: High-mass Star Formation at High-Angular Resolution
• ESO - Science Announcements

Meteors are more than just pretty lights in the sky. Since the majority of meteor-producing meteoroids originate from comets, they contain invaluable information about these objects not otherwise obtainable. ... One such possibility is the planet Mars. ... Taking into account the slower average speed of incoming material at the heliocentric distance of Mars from the Sun, a meteoroid of the same mass entering the martian atmosphere at 30km/sec would produce a meteor +0.5 mag fainter than at Earth. ...

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• Doppler Imaging and Flare Activity on HR1099
• Armagh Observatory
• C.J. Butler, Research Astronomer

... 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 . ...

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• APOD: 2000 April 27 - Calderas And Cliffs Near Io's South Pole
• APOD: 2006 September 5 - Bright Cliffs Across Saturns Moon Dione
• APOD: 2002 March 7 - Comet Ikeya-Zhang Brightens

Spectrophotometric resources (galaxies and stars) . HyperLeda home | ... LL_ELODIE "low-resolution" ELODIE archive . Resolution 0.055 nm (FWHM); W-range: 400 - 680 nm; 1388 stars; 1962 spectra . ... Resolution 0.013 nm (FWHM); W-range: 400 - 680 nm; 1388 stars; 1962 spectra . ... Resolution 0.4 nm; W-range: 580 - 1020 nm; 137 spectra; 126 stars . ... Resolution 1 nm; W-range: 480 to 770 nm; 18 spectra; 18 stars . ... Resolution 0.15 nm (FWHM); W-range: 395 - 475 nm; 78 spectra; 78 stars . ...

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• A 20 cm VLA survey of Abell clusters of galaxies
• The ROSAT All-Sky Survey Bright Source Catalogue
• A 10-GHz Radio Continuum Survey

... The hot component shows very spectacular activity: irregular outbursts accompanied by fast, massive outflows and jets. ... Diffraction-limited images for both components of CH Cyg binary system were reconstructed using visible speckle interferometry at BTA 6-m telescope (Fig.1). The orbital period 15.6 years and masses: 2.0 Msun and 0.7 Msun for red giant and white dwarf, respectively were derived from angular distance (0.042") and magnitude difference (2 m ) of the components. ... Fig.1. ...

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• SAO RAS home page
• Detection of unique bright radio flare of X-ray binary
• GRB080319B

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. ...

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Smithsonian Astrophysical Observatory Memorandum To : From Date: Re: M. Cappi, Strong Gravity SDT/YB Team, XMS team : M. Garcia April 14, 2010 XMS high/mid/low resolution event rates for bright AGN mrg-2010-02v2 This memo arises out of the concern that the bright AGN that will be used to observed strong gravity effects ­ in particular those for which time-resolved measurements of test particle orbits will be made ­ may generate counting rates in the XMS that are sufficient to overwhelm it. ...

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• The AstroStat Slog low-resolution
• Champlane Observation: Magellan/IMACS June 6-9, 2005
• Eyes on the Sky, Feet on the Ground

... omgchain (omgchain-1.8.1) [?? ... The SAS task omcomb is called by omgchain when the current ODF contains files obtained in the Engineering-2 (full frame, low resolution) mode of OM. In this mode the data from the OSW is split into four sub-windows. For instance, the -pixel image can be placed in four image files, each containing a vertical -pixel strip. Combining the Engineering-2 files into one image is the default option, which, if desired, can be switched off. ...

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• Algorithm
• Input Files
• Energy resolution

Spacecraft STP Data 1. ... This CD-ROM contains solar flare reports, sunspot numbers and regions histories, total solar irradiance, and solar bursts. ... MAGSAT - 2 discs. ... A Compilation of 1963-1999 Solar Wind Field and Plasma Data, Near Earth and Deep Space - 3 discs. This CD-ROM contains the interplanetary magnetic field (IMF) and solar wind plasma (SWP) data from several spacecraft which have explored the near-Earth and deep space regions over the last three decades. ...

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• http://www.wdcb.ru/stp/data/cosmic.ray/Neutron_Monitors(minute_values)/C/2001C/2001CALG/REME5M.TXT
• http://www.wdcb.ru/stp/data/Images_of_Magnetograms/index.en_o.html
• "STP Data" STP Data

The AzTEC submillimeter camera detected this bright source (left) in a region of the sky studied by the Cosmic Evolution Survey. The high resolution of the Smithsonian's Submillimeter Array pinpointed the source of submillimeter radiation (center). ... Combined, these data show the source in question is a very bright, distant, and dusty galaxy that existed when the universe was less than 2 billion years old. Left: UMass Amherst. ... Right: COSMOS/ACS Team. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B8F32D309-A990-469D-9C65-3EA69C612D95%7D
• Frantic activity revealed in dusty stellar factories | Astronomy.com

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

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• The Astronomy Shop - Books - by Astronomy Net
• Articles written by astronomers for astronomers of all ages.

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

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To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) METEOR OBSERVATIONS WITH MINI-MEGATORTORA WIDE-FIELD MONITORING SYSTEM S. Karpov, 1, 3 N. Orekhova2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Ivanov,2 E. Katkova,2 A. Perkov, and V. Sasyuk3 RESUMEN 2 Favor de prop orcionar un resumen en espanol. ... The faintest detected meteors has the peak brightness about 10 mag, while the ma jority - from 4 to 8 mag. ... 2010; Karpov et al. 2013; Beskin et al. ...

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• http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt_satellites.pdf

adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

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• ASP: Star Science in the Autumn Sky
• ASP: The New and Improved Hubble Space Telescope
• ASP: The Face on Mars

... V4641 Sgr is known as a detached binary containing a 9 Msol. black hole and an A0 type companion. ... Spectra of V4641 Sgr were taken by us using SAO 1-m telescope between May 23.972 and 24.002 UT (the orbital phase of 0.35), wavelength range 3900-7500A, resolution 8A, S/N~30-40. ... These observations show essential light excess over the quiet light level seen only in the orbital phases between -0.25 and +0.25 with the maximum value of 0.15 mag in the V band at the black hole inferior conjunction. ...

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• Home Page
• The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS
• Cosmological Gene project