... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Time-Slice image in H тАУ 0.8 ? showing the ribbon associated with the surge-like event, the rising filament and its eruption as a dark feature. Bottom: H + 0.8 ? ... We study a sequence of eruptive events including filament eruption, a GOES C4.3 flare and a coronal mass ejection. ... and H + 0.8 ? ... We establish that the filament destabilisation and eruption are the main trigger for the flaring activity. ...

Blackholes2 Forum Message . ... Distant Galaxy Red Shift Caused By Time Passage Variation. ... If I were falling toward a neutron star or a black hole, a distant galaxy would seem to be accelerating toward me? ... And apparent receding distant galaxies with a red shift. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... 2009 April 15 . Jagged Shadows May Indicate Saturn Ring Particles . ... Explanation: What's causing unusual jagged shadows on Saturn's rings? ... Now Saturn's rings have been known to be made of particles for hundreds of years , but these particles have so far escaped direct imaging. It is therefore particularly exciting that a preliminary hypothesis holds that these jagged shadows are silhouettes of transient groups of ring particles temporarily held close by their own gravity. ...

... Credit: NASA , JPL , Space Sciences Institute Explanation: What's causing unusual jagged shadows on Saturn's rings? ... As a result, Saturn's moons now commonly ca s t long shadows onto the rings . ... Now Saturn's rings have been known to be made of particles for hundreds of years , but these particles have so far escaped direct imaging. ... Publications with keywords: Saturn - saturn rings . Publications with words: Saturn - saturn rings . ... Prometheus Creating Saturn Ring Streamers . ...

... lbw Tsys (horcal) as well as the 16K stage dewar temperature (.ps) ( .pdf ): . the comparison of the sep12 and dec12 calibration runs (.ps) ( .pdf ): . The system temperature for polA,polB in lbw had been near 30k up to 17nov12. ... After this, Tsys remained higher than normal. lbw had 3 warmup cool down cycles: . ... After reinstalling lbw on 07dec12, Tsys remained high: . ... 17nov12:tsys: 30.6, 30.1 (POLA,POLB) . ... Dec12 Tsys is about 18% higher than the sep12 values . ... polA-35K . ...

A hardware problem in the HST power system has caused overcharging of 2 of the 6 on-board batteries, which, if nothing was done, could result in battery overheating and possible failure. ... This report describes the actions taken by the NASA Goddard HST Project to address this need and their effect on the scheduling of HST observing programs . ... An engineering analysis tentatively identified the fault as a loose screw connecting two copper bus bars. ... V1/Sun angle . ...

... The changes are important to us, since they affect our time reckoning, our climate, and our understanding of the Earth's past. ... The Invariable Plane . ... The current location of the celestial north pole, the ecliptic north pole, and the north pole of the invariable plane in the northern sky. ... The north pole of the invariable plane lies in Draco, its south pole in Mensa. ... The precession of the celestial north pole, viewed from above the north pole and against the background of northern...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Solar System . ... Comets and Asteroids . ... Stars . ... Space Flight . ... By admin September 22, 2010 Posted in: Comets and Asteroids , Stars . ... At first glance Gliese 710 is not a very distinguished star. ... The rogue star may come as close as a light year to us, blundering through the Oort Cloud. ... Observers in the inner Solar System will see perhaps thousands of comets bloom. ... Subscribe to Astronotes . ...

Next: Release of 16 October Up: Old Releases Previous: Release of 18 September Contents . ... 18 Oct 2001 RCW. ... 13 Dec 2001 RCW . ... Change TSETTLE to 6 for VLBA stations after experience with a 43 GHz phase referencing run that had 15 second scans. ... 2 Jan 2002 RCW . ... Add MINSETUP to the station catalog to deal with cases where there is a minimum scan change time regardless of the slew and settling times, but where this minimum time should not be added to scan changes with long slews. ...

spaceweb@oulu.fi - last update: 14 January 1999, 0950 UT (RR) . Term 'global change' is used to describe the changes of the large scale weather systems on Earth , and especially the surface temperature increase, by man-made increase of atmospheric CO 2 . ... It is the last point that is of importance for space physics, since it is possible that also the changes in Sun 's activity could be causing some changes in terrestrial climate. ... Space Physics Text Book of Oulu ...

. TWO SEPARATE PROBLEMS !!!!! . TWO SEPARATE PROBLEMS !!!!! . TWO SEPARATE PROBLEMS !!!!! . TWO SEPARATE PROBLEMS !!!!! . TWO SEPARATE PROBLEMS !!!!! .

The diffraction image FWHM at 2.2 microns on the Gemini 8 m telescope is about 0.07". Consequently, a spectrograph with a 0.10" slit is essentially diffraction limited in the K band. ... Slit diffraction causes divergence in the spectral direction of rays through the slit in excess of the geometrical focal ratio; it can be thought of as focal ratio degradation speeding the beam in the spectral direction. ... A perfect image would have no phase coherence across the slit. ...

... 8, ``Celestial Mechanics'', 2002 Dynamic evolution of resonance orbits of exoplanets in system 47 Uma B. R. Mushailov, A. A. Kaloshin Sternberg Astronomical Institute, Moscow, Russia The orbits of the major and minor planets of the Solar system indicate that their dynamic evolution is essentially influenced by the effects of orbital reso­ nance interactions. ... One may expect that the orbital resonances can exist not only in the Solar system, but also in other star systems. ...

ChangeLog for omgprep =================== Version 1.1.2 - 2006-06-09 (VNY) (+src/omgprep_mod.f90) A small bug causing a subscription error message is fixed ((SSC-SPR-3607) Version 1.1.1 - 2006-06-09 (VNY) (+src/omgprep_mod.f90) Introducing a flag indicating (by returning a zero or non-zero value) that the spectrum is extractable from the grism-image or not (SSC-SPR-3606). ...

... February 22, 1999 . NGC 1316: After Galaxies Collide . ... WFPC2 , HST , NASA . ... A preliminary inspection indicates that NGC 1316 is an enormous elliptical galaxy that started devouring a smaller spiral galaxy neighbor about 100 million years ago. ... Most elliptical galaxies have more and brighter globular clusters than evident in NGC 1316 . ... One hypothesis therefore holds that these globulars survive from an even earlier galaxy that was subsumed into NGC 1316. ... About APOD > . ...

Telescope Jumps: One Cause is Found . ... One tries to take out the sag of the secondary cage as the telescope is pointed toward the zenith. The second component tries to take out changes in the secondary piston caused by temperature changes of the truss structure. ... Second, the jumps only occur when the temperature data causes motions of the piston which go in a direction opposite to the direction in which the sag component is driving the secondary. ... One has to wonder how this can occur. ...

... Be Stars . ... Stellar Winds . ... He had found the first emission line star. ... More emission line stars were found soon, and one had to make subclasses to keep some overview. Cas is a main sequence B-type star, and together with other such stars showing hydrogen emission it forms the class of "Be stars", where the "e" stands for emission. ... Struve further speculated that those stars would be surrounded by a disk, basically thrown off the stellar surface by the rapid rotation. ...

... An error involving a missing tasks parameter indicates that the parameter file may have changed between the last time the task was used and the current version. ... If still in trouble, delete the parameter file in `myiraf/uparm' corresponding to the task (the names are somewhat contrived, but with a bit of imagination it is not too difficult to identify the right one). ... The imcnts task and region masks . ... A region descriptor of the kind: . CIRCLE(403, 403, 22.5) . ... See `help regions'.) ...

This animation shows a galaxy cluster with two mass concentrations (the pink shading indicates the projected mass density) lensing a background field of faint blue galaxies. ... Inside the Einstein ring radius one has radial arcs, and right in the center of the cluster there are demagnified images. The highest magnifications occur at the Einstein ring radius, giving the large tangential arcs. ... Abell 2218 and CL2244-02 are clusters with tangential arcs. ... Tutorial : Part 1 | Part 2 | ...

... An analysis on new observational data taken with the MPFS and SCORPIO spectrographs indicates that we are dealing with the "galactic wind": the gas is blown above the galactic plane with the characteristic velocity of about 130km/s. The gas outflow is caused by a combined action of winds from the supernovae and young massive stars located in the galaxy's circumnuclear region. ... The most probable hypothesis is that the accretion of intergalactic gas clouds is feeding their star formation. ...