... 2009 July 27 . NGC 1097: Spiral Galaxy with a Central Eye . Credit: NASA , JPL-Caltech , SINGS Team ( SSC ) . Explanation: What's happening at the center of spiral galaxy NGC 1097? ... Near the left edge and seen in blue, a smaller companion galaxy is wrapped in the spectacular spiral arms of the large spiral, lit in pink by glowing dust . ... Note: An APOD editor will review great space images this Saturday night at Ft. ... About APOD | ... NASA Web Privacy Policy and Important Notices . ...

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > I see unexpected boxy emission-like features in my REDL spectra - where do they come from? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... The pipeline by default interpolates across the bad columns in the REDL CCD when it creates the master bias, but does not so when it processes the science data. This inconsistency can create boxy emission-like features as seen in the figure below. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Astronomy for Kids . ... The Real Reality Show: Would aliens be anything like us? ... The Real Reality Show: All about the Drake Equation . ... Observing Basics . The Real Reality Show . ... The Real Reality Show: Why is there an antiscience movement? ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

A Flag Shaped Aurora over Sweden . ... In mid-March, an energetic Coronal Mass Ejection directed toward a clear magnetic channel to Earth led to one of the more intense geomagnetic storms of recent years. A visual result was wide spread auroras being seen over many countries near Earth's magnetic poles . Captured over Kiruna , Sweden , the image features an unusually straight auroral curtain with the green color emitted low in the Earth's atmosphere , and red many kilometers higher up. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. August 30, 1998 . The Sun Erupts . Credit: Skylab , NASA . Explanation: The Sun is a seething ball of extremely hot gas. ... The Sun has survived for about 5 billion years, and will likely survive for another 5 billion. ... For example: Why is the Sun's corona so hot? What causes the Sun's unusual magnetic field? ... About APOD > . ...

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

... Satellites of the planets are assigned a provisional designation (indicating year of discovery) by the Central Bureau for Astronomical Telegrams ( CBAT ) upon satisfactory demonstration of the existence of a new object. ... In the past, Comets were first given a provisional designation, consisting of the year and a lowercase letter indicating the order of discovery in the year (e.g., 1994a was the first comet discovered or recovered in 1994, 1994b the second, etc.) ... Names .. ...

In early mid-infrared observations (c 1970) two prominent dust emission features were discovered. ... Soon after the discovery of the silicate features another feature at about 11.3 microns was discovered in the spectra of some carbon stars, not as wide or as strong as the silicate features but still thought to be due to a solid material. ... less common features: extreme carbon stars, the AlO/silicate complex, the "unidentified infrared" features, unusual silicate features . ...

... Three levels of great fun and interesting designs. ... Level 3: Well, this one is just cool. ... Additional Credits to : The developers of Doom, DEU, and BSP. ... Play Information * Episode and Level # : E1M1, E1M2, E1M3 Single Player : Yes Cooperative 2-4 Player : Yes Deathmatch 2-4 Player : Yes Difficulty Settings : Yes New demos : Yes New Sounds : Yes (thanks Chris!) New Graphics : Yes * Construction * Base : New levels from scratch Build Time : Probably over 250 hours!! ...

Certainly the rock outcropping on Mars is suggestive of a human face. But that doesn't mean it is a monument deliberately constructed to look like a face. ... We see animals and human faces in clouds. ... If you look on the left and right sides of the maple leaf on the Canadian flag, you can see the faces of two people arguing with one another. ... Another Viking image shows a Martian crater with what looks like a smiling "happy face'' inside. ... What about the "pyramids'' near the Face on Mars? ...

... The foot-point of the bright feature becomes weak. Magnetic fragment behaviour Note A bipolar region with very weak positive and Start of the data set. ... At the east, a stronger bipolar region relate to many bipolar regions. presented and cancellation occurs. 01:34 The negative fragments in the "weak bipolar region" become bigger and stronger. 01:50 The foot-points of The positive fragments in the "weak bipolar the jet-like feature region" become stronger and bigger. ...

... Preprocessor Compiler Control . ... This directive includes a file into code. ... include <file> or #include ``file'' . ... As another example if running program on MSDOS machine we want to include file msdos.h otherwise a default.h file. ... This is most often used with programs that translate other languages to C. For example, error messages produced by the C compiler can reference the file name and line numbers of the original source files instead of the intermediate C (translated) source files. ...

Next: VLABAND and VLABW Up: Details of SCHED Parameters Previous: VERSION Contents . VEXTEST is a switch that allows testing of VEX related features that have not been released for public use. It is likely to only be of interest to the SCHED developers, although it is possible that early users of new features may need it. Argument: No argument - this is a logical . Options: No arguments . Default: Not set, which may block some VEX features. ... Craig Walker 2014-04-14 ...

... Bojan Nikolic web pages (r. 329) . ... python <name of some script> . ... The reason for such design is that the scripts are designed for interactive use within Python. What you are supposed to do is to start python interpreter, load up the script using the execfile command, e.g., . ... and then continue in Python to use the commands defined by the script, maybe for example calling a analyse() function. ... Explanation of my Python scripts and how to use them . Design for use within Python . ...

If you were using a Java-enabled browser, you would see a scrolling text sign instead of this paragraph. ... Wiggle your mouse cursor over the applet, you should notice the sign speed up. ... Then, if you go back to the LED page and try it again, Netscape will give you a "NullPointerException" error. ... Everything you see the sign displaying is run entirely by a script. ... The size, size of border, color of border, and even the font that the sign uses are all configurable. ... More on fonts . ...

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 . ...

There are two large banks in Puerto Rico, Banco Popular and Citibank, and a number of other banks and "Cooperativas de Ahorros" (Credit Unions or Savings and Loans). Both large banks have branches in Arecibo. ... Banco Popular is the largest bank; there are branches everywhere (but not within 10 km of the Observatory). ... The name may be more familiar to people in the States (people report having difficulty cashing a check from Banco Popular in the midwest), but this may just be a rumor. ...

... Archives . ... News and related stories . ... Another rabbit I missed came to a realization by a friend, who was sure that I already knew this ?call for papers? notice for the special issue of the signal processing magazine (SPM). ... The slog has some SPM article review posts, as you recall. ... I believed that research topics in signal processing is very strongly associated with astronomical data analysis. ... hlee on Do people use Fortran? ... Chandra Blog . ... What?s new . ...

... A new IRAF task has been developed that automatically identifies linear (line-like) features in an image or set of images. ... In order to automatically detect linear features, the first step is to select pixels in the image (Fig. 1 , left panel) that fall within a given data value range. ... Another aspect of extended linear features is that the image space pixels that describe them are in some way adjacent to one another and have a minimum and maximum length. ...

Space debris is a serious and growing threat to operating spacecraft. Potential debris collisions with satellites are becoming increasingly likely and can cause economic loss of between $25 million and $500 million per event. ... National and international partners include EOS Space Systems, Lockheed Martin Space Systems (US), Optus Satellite Systems, the Australian National University, RMIT University and the National Institute of Information and Communication s Technology (Japan) . ...