... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

... Brain Crater on Mars . ... What caused this unusual looking crater floor on Mars? ... Comet NEAT (Q4) Over Indian Cove . ... Comet NEAT (Q4) was quite photogenic earlier this month. Although the head and part of the tails of Comet C/2001 Q4 (NEAT) were visible to the unaided eye, the best views of the colorful tail were revealed only later by cameras able to expose for long periods. NGC 3372: The Great Nebula in Carina . ... Venus: Earths Cloudy Twin . ... Endurance Crater on Mars . ...

... The TRACE images may be used without restrictions in publications of any kind. ... These two images, taken on 18 November 2000 at 15:54UT and 16:11UT, respectively, show such an event: the red circle in the image to the left shows a region where many loops are cooling, with bright loop tops (the intensity scales with the square root of the image to reduce the dynamic range). ... See also a collection of images related to the Sun, other cool stars, and solar-terrestrial effects . ... Images | ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... 227Wink This paper containes an investigation of 91 sources which appear to be point sources when observed with the angular resolution of the 100-m telescope at 4.9 GHz, teta_a = 2.6', and which we expected to be HII regions. The basic search list was prepared from the 4.9 GHz survey of the galactic plane by Altenhoff et al. ... In the present paper we list 4.9 GHz flux densities only for sources for sources for which we present new observations. ... source structure indicated . ...

Galaxies are diffuse objects which are imaged against a background of finite brightness and noise. Galaxies which have the maximum contrast with respect to this background are the ones that are first discovered. ... These galaxies have been missed to date but active surveys for them are underway. ... In this page we present several examples of these newly discovered Low Surface Brightness galaxies as well as examples of high surface brightness galaxies. ...

... region (region-7.5) [xmmsas_20041122_1834-6.1.0] . Meta Index / Home Page This section documents the parameters recognized by this task (if any). Parameter . ... Reference event file used to define the coordinate system for the source and background regions. ... If operationstyle =`single', the task looks in this parameter for the row number of the source list ( after the list is filtered via expression ) for which to construct source and local-background event-extraction regions. srcidcol . ...

There is often dust associated with ionized regions. Compact HII regions usually have associated dust from a molecular cloud in which the massive star is being "born". ... For such stars the dust is not produced by the star, and a variety of dust features are observed. The planetary nebulae also usually have associated dust from the previous stage of evolution where they were either carbon stars or M-type giants. ... The feature near 11.5 microns in the IC 418 spectrum may be due to SiC dust. ...

Starbursts are regions of enhanced star formation efficiency, where gas is being converted into stars at much higher rates than can be sustained over billions of years. ... A nice example in the southern sky is the nearby galaxy NGC 7552, which was imaged with the Compact Array at 3 cm by Forbes et al. ... On 9 May we re-observed this galaxy with the Compact Array in the 3-mm lines of HCN and HCO + . ... The two lines were observed simultaneously, allowing a direct comparison of their line strengths. ...

... Mystery flare , from Terry Moseley: . While observing a pass of the ISS tonight (now last night, July 10!) ... It was in the general region of Gamma Ophiuchi, although the sky was too bright, with too few stars visible, for me to get an accurate position. AHA, you'll say - an Iridium Flare! ... BUT - they usually appear in roughly the same quadrant of the sky as the predicted flares, since the Sun-Earth-Satellite angle is similar. ... International Year of Astronomy, Ireland National Node . ...