... 2015 September 16 . Bright Spots Resolved in Occator Crater on Ceres . ... Explanation: What created these bright spots on Ceres? The spots were first noted as the robotic Dawn spacecraft approached Ceres , the largest object in the asteroid belt , in February, with the expectation that the mystery would soon be solved in higher resolution images. ... Another recent clue is that a faint haze develops over the crater's bright spots. ... About APOD | ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. September 22, 1998 . M61: Virgo Spiral Galaxy . ... Explanation: M61 is a barred spiral galaxy located in the nearby Virgo Cluster of Galaxies . Visible in M61 are a host of features common to spiral galaxies : bright spiral arms , a central bar , dust lanes , and bright knots of stars. ... About APOD > . ...

... Observatory . ... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > My data shows an extended, bright feature - what can this be? ... Observing Facilities . ... Observing with ESO Telescopes . ... Science Data Products Forum . ... ESO Data . ... You might also want to check http://www.eso.org/sci/observing/PublicSurveys/useful_links/OmegaCAM_images.html where we provide a collection of example OmegaCAM images, illustrating some special data features. ...

... Here are some general thoughts about the role of Mark5 recording in pulsar experiments. Pulsar work with the Mark5 Backend: Advantages: Flexibility: Set frequency time resolution after observations, enabling multiple analyses of the data. ... We can use the Mark5 recorders to gauge stability of the other pulsar timing backends: at multiple telescopes, and multiple epochs). ... The properties of these features changes as the scattering medium changes on day-month time scales. ...

The aromatic features in M101 were studied spectroscopically and photometrically using observations from all three instruments on the Spitzer Space Telescope. The global SED of M101 shows strong aromatic feature (commonly called PAH feature) emission. ... This implies that the weakening of the aromatic emission in massive star-forming regions is due primarily to processing of the dust grains in these environments, not to differences in how they form. ...

... Cameras around the globe pointed skyward this week to capture the spectacular conjunction of a crescent Moon and bright planets Venus and Jupiter. ... Smile in the Sky . ... It also featured the remarkable conjunction of the crescent Moon, Venus, and Jupiter forming a twilight smiley face. ... On December 1, bright planets Venus and Jupiter gathered near the young crescent Moon, an inspiring celestial scene in early evening skies around the world. ... Massive Stars Resolved in the Carina Nebula . ...

... Observations of the Moon eclipse on 17.09.97 have shown the Moon details contrasts had decreased and the total radio brightness had fallen at all observed frequency range (from 10% at 1.38 sm down to 2.5% at 13 sm). The fall of the Moon radio brightness has been detected during the eclipse at decemeter waves for the first time. ... Radio emission of the Copernicus crater at 1.38 and 2.7 sm has been detected for the first time. ...

... If finddead =Y, embadpixfind looks for too dark pixels, rows and columns too. ... The maxratio parameter avoids detecting 'grey' pixels, rows or columns on observations with high statistics. Whatever findbright and finddead , dark and bright columns and rows are always searched for together in order of decreasing significance (either positive or negative). This avoids finding spurious bright columns/rows next to very dark ones, and vice-versa. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... NGC 6357's inner star forming region glows with the emission of ionized hydrogen gas. Image credit: ESO/VVV Survey/D. Minniti. ... Located around 8000 light years away in the constellation of Scorpius , NGC 6357 (sometimes called the Lobster Nebula ) is a typical stellar nursery, filled with vast clouds of gas and tendrils of dark dust. ... Subscribe to Astronotes . ...

... The images that make up this mosaic were sent back from NASA s New Horizons spacecraft from September 5 to 7, 2015. The image is dominated by the informally named icy plain Sputnik Planum, the smooth, bright region across the center. ... The smallest visible features are 0.5 mile (0.8 kilometer) in size, and the mosaic covers a region roughly 1,000 miles (1,600km) wide. The image was taken as New Horizons flew past Pluto on July 14, 2015, from a distance of 50,000 miles (80,000km). ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... September Perseid meteors captured by the . ... Its occurrence provides astronomers with interesting new data about the hidden trails of meteoroids тАФ small bodies ranging in size from fine dust particles to objects of marble-size and larger тАФ in the solar system and their supposed sources: comets and asteroids passing through the inner solar system. ... The particular comet that created the September Perseids is unknown...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Publications of the ASP (PASP) . ... Astronomy Beat . ... Mercury Magazine Contents and Select Excerpts . ... September/October 2005 . ... As much a need for the science community as for the nation, the astronomy education and public outreach profession is [finally] coming into existence. ... Sky Events, Richard Talcott . September Sky Map | October Sky Map | ... education | ...

OBSERVATION of RADIO LOUD PULSARS with the Fermi-LAT -ray telescope Thierry Reposeur CENBG Bordeaux, France on behalf of the Fermi-LAT Collaboration and the Pulsar Timing Consortium Orange Pulsar Meeting 27-28 September 2010 Orange, NSW, Australia pre-Fermi era 7 pulsars known to radiate -rays (6 EGRET, 1 COMPTEL) Vela, the brightest Geminga, 1st radio quiet B1952, no cutoff A too small population for an extensive study Fermi-LAT sensitity about 25x EGRET's expect many more pulsars. ...

... The jets can also be produced in smaller scale by binary stellar systems. ... Some 200 -- 250 X-ray binaries, systems in which a neutron star or black hole is accreting material from a companion star, are known. Approximately 20% of these sources have been detected at radio wavelengths, and in several cases high resolution radio observations have resolved this emission into jet-like structures, sometimes with components moving at relativistic velocities. ... It is variable radio source. ...

... Other Characteristics of the Sun: Variability of Rotation, Magnetism, Chemical Structure, Planetary System. ... Methods of Solar Magnetic Fields Measuring: Visual, Photografic, Photoelectric. ... Empiric Datas of Magnetic Fields in Photosphere, Chromosphere and Corona. ... Characteristics of Magnetic Field in Balanced Force Tubes by Potential and Forceless Field. ... Phenomenons in Active Region (Magnetic Field, Spots, Torches, Solar Prominences, Flares, Discharges. ... Magnetic Fields in Flares. ...

... Flux density at 1 GHz (/Jy): 20 . ... Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3'). ADS . ... 1975, AuJPA, 37, 39. Molonglo at 408 MHz (3': S=31.0 Jy) and Parkes 64-m at 5 GHz (4': S=9.1 Jy), no maps. ... 1975, A&A, 45, 239. ... VLA at 1.4 GHz (3".4?14".5). ... Whiteoak & Green 1996, A&AS, 118, 329. ... 2000, ApJ, 537, 875. VLA at 1.7 GHz for OH Zeeman splitting. ... CO observations of the vicinity. ... Spitzer observations. ... GBT at 1.6 and 1.7 GHz for OH masers. ...

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. ...

. Microwave Chains . The majority of the modified Nobeyama radio heliograms corresponds to the restricted range of the brightness temperature of Tb~5000-20000 K. On the negative Nobeyama radio heliograms, the white (i.e. absorption) features are radio filaments. October 30-31, 1992 . May 10-15, 1993 . November 1-4, 1993 . August 20-September 02, 1998 . Back to the parent page . Last update: 2 April 1999 . 

Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... So Where Is Mars Now? Forum List | ... Post Message | ... Posted by Moazzam on September 4, 2003 20:09:09 UTC . ... Login to Post . ... www.astronomy.net . About Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...