SAS home . ... List of SAS threads . This thread contains a step-by-step recipe to extract a light curve of a point-like source for all the X-ray cameras, and to start a simple analysis tool. ... If the following files are available: a) RGS event list; b) RGS source list, just a single evselect command allows a user to create a light curve, corresponding to the extraction regions in the spatial and order images. set up your SAS environment (following the SAS start-up thread ) . ...

Blackholes2 Forum Message . Forums: . ... Post . ... Im New Here And I Would Like Some Help . ... Post Message | ... Posted by CJ on July 18, 2004 00:07:39 UTC . ... What is the event horizon - sirius_black - August 12, 2004 - 19:14 UTC . Event horizon - mathman - August 12, 2004 - 21:26 UTC . ... 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" . ...

Next: Hierarchical Wiener filtering Up: Noise reduction from Previous: The convolution from . Let us consider a measured wavelet coefficient at the scale i . We assume that its value, at a given scale and a given position, results from a noisy process, with a Gaussian distribution with a mathematical expectation , and a standard deviation : . ... We get: . ... This is done from the study of the variation of the noise between two scales, with an hypothesis of a white gaussian noise; . ...

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

... I see the girls walk by dressed in their summer clothes, I have to turn my head until my darkness goes. ... I look inside my self and see my heart is black, I see my red door and it's happy painted black. ... SONG : Nirvana Ich beschreite dunkle stufen Die den weg zum himmel hinauf nicht finden Euer himmel hat nie existiert Ein fall, die leere, jedoch Die ganze welt ist ein reines nichts Ihr seid schon tot geboren Ich habe mich erhaengt und lebe doch Eurem gott bin ich niemals begegnet ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... What's winter like in Antarctica? ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

. The original pictures are taken at: . Biosphere-2, Tucson, Arizona - "Pray" . USS "Little Rock", Buffalo, New York - "The door" . Castelet, Copenhagen - "Mr. Hyde in October" (Oct '94) .

... M81 and M82: GALEX Full Field . ... Intriguing galaxy pair M81 and M82 shine in this full-field view from the orbiting GALEX observatory. GALEX - the Galaxy Evolution Explorer - scans the cosmos in ultraviolet light, a view that follows star formation and galaxy evolution through the Universe. ... The center of the Andromeda galaxy is beautiful but strange. ... As a present to APOD readers, digital imager Mattias Malmer offers a very high resolution view of big beautiful Saturn. ...

... For whatever reason, there are people that hate NFS (Network File System). ... Mark has claimed, and it has been widely repeated, that it is impossible to provide concurrent access to mbox-format files with IMAP. ... In the case of IMAP though, the answers being offered about mbx over NFS or about concurrent access to mbox files are not the rare kind of answers. ... The way the most common IMAP server implementations work is that you connect to a master IMAP server process, and then you authenticate...

... 2002 July 22 . Open Cluster NGC 6520 from CFHT . ... For the open cluster of stars NGC 6520, every day is like this. On the left of the above picture are many of NGC 6520's bright blue stars. ... On the right is an absorption nebula , molecular cloud Barnard 86 , from which the stars of NGC 6520 surely formed. ... NGC 6520 spans about 10 light years and lies about 5500 light years away toward the direction of Sagittarius . ... About APOD | ...

From: TerryMosel aol.com Date: Wed, 20 Apr 2005 19:38:47 EDT Subject: New Scientist, Binoc offer, HST event Hi all, 1. Thanks to Danny Collins for the following, from the 9 April issue of New Scientist: "Calling all backyard astronomers. ... If you keep a keen eye on the heavens and would like to be involved, please email backyard.astronomers newscientist.com with brief details of your interest and how you could help." ... Clear skies, Terry Moseley . Last Revised: 2005 April 21st . ...

METAR Wishlist Following is a list of items that I'd like to add to METAR or that others have requested. ... It'd be nice to have a lot of METARs which encompass various weather condition which we can test against. ... Sites around the world use similar (but slightly different) formats for their METARs. There is always a METAR format the parser will fail on. Calculate Heat Index and/or Wind Chill Both would be fairly easy to do, provided you get the formulas correct. ...

... Positive iterative deconvolution is an algorithm that applies non-linear constraints, conserves energy, and delivers stable results at high noise-levels. This is also true for Richardson-Lucy like algorithms which follow a statistical approach to the deconvolution problem. ... All algorithms resolve the objects, as shown by the reconstructions by Richardson-Lucy in Figure 2 on the right, the algorithm by M?ller in Figure 3 on the left and positive iterative deconvolution in Figure 3 on the right. ...

This lesson is intended as a revision of basic direct-current (DC) circuits . It was discovered in the 19th century that certain materials (so-called ideal resistors) have a current through them I that is proportional to the potential difference (voltage) across them V. This is not a fundamental law of physics (like momentum conservation) but is an observed behavior which some materials roughly follow (like the friction law we covered earlier in the course). ... This equation is called Ohm's law. ...

Use procedure average to average point data. ... Warning(AVERAGE): no BackgndRate for OB=1, CH=11, scan= 1, Star: BSC1788 . ... Important : before beginning with the calibration, it is necessary to flag all incoherent scans since they are no longer needed. ... Begin calibration by displaying the plot widgets for averaged visibility data using Calibrate|Visibility|PLOT. ... Plot this selection of visibility amplitudes on baseline 1 of both spectrometers, for the four selected channels. ...

OptInt PmWiki : Pm Wiki / Custom InterMap . ... Custom markup > . ... This page describes PmWiki's default InterMap links, and how a wiki administrator can create additional InterMap links. An intermap entry takes the following format: . ... The default intermap.txt distributed with PmWiki (in the scripts/ directory) includes the following InterMap entries: . PmWiki: http://www.pmwiki.org/wiki/PmWiki/ Cookbook: http://www.pmwiki.org/wiki/Cookbook/ Wiki: http://www.c2.com/cgi/wiki ? ...

INPUT FILE The input file(s) have either a 'fixed-format' or 'free-format' header. Pulse times of arrival (TOAs) follow the header, or may be listed in a separate file if a free-format header is used. Use of the fixed-format headers is discouraged, as new features will likely be added only for free-format files. Blank lines and comment lines are allowed throughout input files except within fixed-format headers. ...

... Questions relevant to "Exploration of the Earth's Magnetosphere" will be answered, to the extent time allows. If a question seems to be worthy of broader interest, it and its answer (suitably edited) may be added to the list appearing in "Exploration." ... Please do observe the following: . ... Asking about matters which are far beyond the scope of "Exploration." ... Posing a question without first checking if it was answered in the main files of "Exploration" or in the question-and-answer list. ...

... SW 07:37 0:00 (kflushd) root 3 0.0 0.0 0 0 ? ... S 07:38 0:00 klogd root 56 0.3 17.3 2232 1156 1 S 07:38 0:13 -bash root 57 0.0 7.1 1272 480 2 S 07:38 0:01 /sbin/agetty 38400 tt root 64 0.1 7.2 1272 484 S1 S 08:16 0:01 /sbin/agetty -L ttyS1 root 70 0.0 10.6 1472 708 1 R Sep 11 0:01 ps aux . ... How can a process use no memory? These processes are the kernel daemons. ... There might also be a kapmd daemon running on your system if you have configured automatic power management into your kernel. ...