Next: Sky models Up: Reductions --- at Previous: Robust fits and . ... Sky values may have already been subtracted (e.g., in CCD measurements or other data marked as RAWMAG instead of SIGNAL.) DARK CURRENT: Dark current is usually a strong function of detector temperature. If you have regulated the detector temperature, then only a weak time dependence might be expected --- perhaps only a small difference from one night to the next, or a weak linear drift during each night. ...

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

... WFPC2 Home . ... Bright stars near the WFPC2 field of view can cause various artifacts to appear in science images. ... When writing Phase II proposals, observers will sometimes attempt to avoid bright stars by placing them in the un-imaged "L" shaped region adjacent to CCD PC1, or in the region just outside the nominal field of view. ... In both cases the optics can image this light back onto the CCD's. Bright stars must be placed at least 10 arcseconds outside the field to avoid artifacts. ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Programs . ... rotatelogs is a simple program for use in conjunction with Apache's piped logfile feature. It supports rotation based on a time interval or maximum size of the log. ... For example, if the rotation time is 3600, the log file will be rotated at the beginning of every hour; if the rotation time is 86400, the log file will be rotated every night at midnight. ... date and time (localized) . ...

. XMM-Newton Science Analysis System . dal (dal-1.181.1) [xmmsas_20041122_1834-6.1.0] . Meta Index / Home Page This document contains a large number of example programs which also are available separately. They can be found in directory dal/doc/reference/examples. The programs are built with the command: make test. XMM-Newton SOC/SSC -- 2004-11-22

The aim of this assignment is to teach you how to carry out a very common programming task: reading in a bunch of data from a text file, doing something with it then writing the results out again. ... The goal of the assignment is to write a computer program which will select this sample for you. You will pick the micro-quasars to observe from a rather large catalogue, which can be found here: The catalogue is an ASCII (text) file - you can inspect it with a normal text editor. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... For detailed information about the use of color maps, please consult the appropriate PGPLOT documentation: for instance pgscr.dc2 and pgscir.dc2 to start with. ... example7.c -XT */ # include stddef.h # include math.h # include gipsyc.h # include cmain.h # include init.h # include finis.h # include userfio.h # include pgplot.h # include ggi.h #define ROWS 100 /* number of image rows */ #define COLS 100 /* number of image columns */ #define NCI 50 /* number ...

... As with all tutorials, this document describes detailed steps to just one particular effect. ... Create a new Greyscale image, and put some text in it. ... Duplicate U1, then run Gaussian blur 5.00. ... Then, invert the image so it is white on black. ... Multiply U2 and U3. ... Invert U1, so it is white text on black background. ... Then run Gaussian Blur 4.00. ... If you like you can multiply this by a texture, for a textured background, but for this tutorial the background is white. ...

Comedi Documentation . ... Right to the source: #include <stdio.h> /* for printf() */ #include <comedilib.h> int subdev = 0; /* change this to your input subdevice */ int chan = 0; /* change this to your channel */ int range = 0; /* more on this later */ int aref = AREF_GROUND; /* more on this later */ int main(int argc,char *argv[]) { comedi_t *it; lsampl_t data; it=comedi_open("/dev/comedi0"); comedi_data_read(it,subdev,chan,range,aref,&data); printf("%d\n",data); return 0; } . ...

... 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. ...

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

Peremennye Zvezdy", . ... 11, N 9 (2011) . ... Min . ... min . Comm. 1 . ... MinII = 18.60. ... A very close pair of a faint variable and a brighter neighbouring star (USNO-B1.0 1272-0434523). ... During observations of a poorly studied cataclysmic variable RX J1951.7+3716 (Zubareva Antipin 2011), we discovered four new eclipsing variable stars in close vicinity of the variable. ... To search for new variable stars, we used C-Munipack and VaST (Sokolovsky Lebedev 2005) software. ...

multi-rsh is a perl script which runs the same command on multiple machines, in parallel, and provides reasonable, adjustable timeouts for those machines which fail to answer. Both standard output and standard error are returned through the same channel, and all output has the hostname prepended to each line. Multi-rsh must be run as root (remote jobs can be set to run as any user, see Options below). ... Neither form allows you to directly pass input to the remote programs. ...

Arecibo World Day data description . ... The F-region program covers the altitude range of 140 - 660 km. ... The KINDAT code in the CEDAR database for these parameters is 2010. ... The KINDAT code in the CEDAR database is 2021 for this kind of data. The barker-code program allows the measurement of electron concentration at a height resolution of 0.6 km with a very high S/N. This program typically covers the altitude range of 60 - 500 km. The KINDAT code in the CEDAR database is 2015. ...

ALMA | ... Phase Correction Algorithms | ... On this page, we describe what the phase correction algorithms set out to do and the framework we have developed to optimally use all of the available information. ... We are developing a Bayesian framework to combine all the information we have about the current and future meterological conditions (which are naturally accommodated as priors in a Bayesian scheme) with detailed physical models of the atmosphere. ...

Microsymposium 34, MS058, 2001 ANOMALIES OF THE MOON'S THERMAL EMISSION IN THE IR SPECTRAL RANGE (10.5 - 12.5 micron). ... Sternberg State Astronomical Institute, Moscow, 119899, Russia, pugach@sai.msu.ru Summary: New satellite measurements of the lunar-surface radiation temperature were used to construct the spatial angular function of thermal radiation of the Moon in the infrared (10.5-12.5 micron) spectral range. ... These thermal anomalies are observed only in the limited range of phase angles. ...

. You can get more information from the manual page for the Bourne shell (sh). To get information about shell programming with another shell, read the manual page for that shell. For example: man ksh . This will display the manual page for the Korn shell. There are a number of books on the different shells and how to program them. Many will be stocked in the computer section of most major booksellers. Or they may be available through your library.

... WIP is an interactive package with a simple to use interface designed to produce high quality graphical output. WIP was developed as part of the Berkeley-Illinois-Maryland Association (BIMA) project and is available via anonymous ftp. ... Included in the WIP distribution is a complete manual which contains several sample figures with associated commands, a frequently asked questions section, and a descriptive listing of all available commands. ... Figure illustrates WIP's ability to handle images. ...

The two main numerical libraries in Fortran 90 are . NAG Numerical Libraries for Fortran 90 Users . IMSL Fortran 90 MP Library Both of these offer both a modified version of the Fortran 77 library, recompiled for Fortran 90, and a completely new library, using all the new facilities of Fortran 90. ... On the Sun using Sun OS 4.2.1 we also got completely wrong results when using library functions in single precision, since the C system on Sun converted all function calls into double precision. ...