Next: A box, to include Up: To produce a region Previous: To produce a region . select cursor and circle . When in the image window, the mouse now has a box shape with an arrow at the upper left corner. The mouse buttons act as follows: . LEFT - to move the center of the circle at the position of the arrow point. ... RIGHT - idle. center the circle at the point source by positioning the arrow point and clicking on the LEFT mouse button. A circle will appear at the arrow position. ...

... 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. ...

Motif and X-Windows . It is possible to execute a Motif application on a computer around the corner or around the world and redirect the input and output for the application to your workstation. There are files located on the Science Cluster to help you position and display windows from a remote VMS system. ... Copy two command files: . ... From one of the workstation windows, have the remote system execute the x command file and create the display on your workstation by using this command: . ...

... 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. ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Asteroid 2010 SO16 and the Earth follow similar orbits around . the Sun. ... out a horseshoe shape in space, taking 175 years to go from . ... Asteroid 2010 SO16 takes 175 years to make the trip from one end of the horseshoe to the other. ... Currently, three other horseshoe companions of the Earth are known to exist but, unlike 2010 SO16, these linger for a few thousand years at most before moving on to different orbits. ...

The Status popup displays useful information about the state of sets, regions, and graphs. ... When the number of sets is less than 30, this button is not needed, use the scroll bars to view the status of the sets that are not shown in the display. ... Operations in the Status popup are performed by clicking on the operation, then clicking on one or more set numbers shown in the display. ... Clicking on Copy followed by clicking on a set number in the scrolled window will select the set to copy from. ...

This diagram illustrates the effects of floating a box. A document window is shown, with 8 lines (numbered 1 to 8), each 24px high. Since the "inner" box has been floated to the right, all other text flows around it (on lines 1 through 4). ... Vertical bars represent the left edge of the floated box. The lines, as they appear in the image, contain: 1 Beginning of body contents. ... End | Inner 3 of outer contents. ... Inner contents" is blue. End of outer contents" is red. ...

... Just one minute before midnight EDT, Friday, August 28, the Space Shuttle Discovery began a long arc into a cloudy sky. ... Shadows of Saturn at Equinox . ... Unusual shadows and dark rings appeared around Saturn near its equinox last month. At that time -- early August -- Saturn's ring plane pointed directly at the Sun. ... Many stars like our Sun were formed in open clusters. ... D. rad Bacteria: Candidate Astronauts . ... Known as an extremophile, bacteria such as D. NGC 7771 Galaxy Group . ...

... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

... Before opening the VNC viewer, you will need to SSH onto remote to start a VNC session on dataview, as described above. To do this open Secure Shell then either fill in you username in the username box, remote.naic.edu in the hostname box and 22 in the port box (this is the standard SSH port). You shouldn't need to fill in any more options, simply hit enter or click the [EMTER] Connect button to make you SSH connection. ... If you hit r , you will return to the remote.naic.edu login screen. ...

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

Astronomy Discussion Forums . ... Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... New Model: How Do The Sun And Moon Appear To Move Across The Sky . ... Post Message | ... focused on the Sun and the Moon as they appear from the given location of the Earth surface: . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Dust and debris parade in an extremely misshapen ring around the young star, HD 15115. The disk, seen edge-on with NASA's Hubble Space Telescope, is the dense blue line extending from the star to the upper right and lower left of the image. The disk appears thicker at upper right than at lower left, evidence of its lopsided structure. Astronomers think the disk's needle-like look is caused by dust particles following a highly elliptical orbit around the star. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 21, 1999 . Follow The Spots . Credit: Louis Strous ( LMSAL ), SOHO - MDI Consortium, ESA , NASA . ... Just follow the sunspots . ... It shows the Sun's visible surface for most days of August 1999 so that the same sunspots appear many times as the solar rotation carries them across the face of the Sun . ... About APOD > . ...

... Following a micrometeoritic impact in Rev.#961 (March 2005), a new hot column appeared, whose effects leak across the whole column RAWX=318 . While a correction for this hot column is possible and implemented for MOS1 exposures taken in Imaging Mode, the offset value in MOS1 exposures taken in Timing Mode is too high for any meaningful correction to be possible. ... mos1.evt is the name of the MOS1 event list . ... RAWX in [320:329])" . ... Calculate the effective area due to the excised columns . ...

Next: Emission-line galaxies Up: The Hamburg/SAO Survey for Previous: Data reduction . ... Among them 128 are new or confirmed emission line galaxies, 6 are quasars (all with redshifts in the range 2.93 to 3.35) and 23 are galaxies without emission lines (only 5 of them have good enough S/N ratio to identify absorption features and to measure redshifts). ... Emission-line galaxies . ... Non emission-line objects . Absorption line galaxies . Stellar objects . Non-classified objects . ...

... It runs on unix, MacOS and possibly on Windows. ... On MacOS or Windows, double-click TUI. If MacOS complains that the application is unsigned then right-click TUI and select Open. ... If you have never run TUI before, set up your preferences before proceeding (for help on any item, right-click on the control and select Help from the menu that appears): . ... To save your window positions and remember which windows to open at startup, select Save Window Positions from the TUI menu. ...