an error occurred while processing this directive] . Site Map . ... Timeline . ... Magnetic Field . ... Aurora . ... 3a. Loomis Aurora . 3b. Fritz Aurora . ... Hermann Fritz . Shown here is a map of the frequency with which auroras are seen, produced in 1881 by the German scientist Hermann Fritz (1830-1883). The line of greatest frequency lists 100 auroras per year, while in the center of the pattern auroras are much less frequent. ... Timeline Expanded timeline Glossary . ...

... A dynamo (or electric generator) is a device converting . ... Faraday discovered that by moving a magnet next to a closed electric circuit, or changing the magnetic field passing through it, an electric current could be "induced" to flow in it. ... Faraday's disk dynamo Faraday showed that another way of inducing the current was to move the electric conductor while the magnetic source stood still. ... Faraday's disk dynamo needs a magnetic field in order to produce an electric current. ...

... Reprocessing WFC3/UVIS and ACS/WFC images requires DrizzlePac v1.1.10 . ... HST Peer Review Process . ... DrizzlePac . ... As of September 10, 2013, MAST calibrated data products for WFC3/UVIS contain additional header extensions describing the image distortion. ... However, in order to be compatible with the updated DrizzlePac software (which expects a separate solution for each chip, as required by the new WFC3/UVIS correction), the format of the ACS D2IMFILE has changed, as shown below. ...

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... Apache HTTP Server Version 2.4 . ... This Multi-Processing Module (MPM) implements a non-threaded, pre-forking web server. ... Apache httpd always tries to maintain several spare or idle server processes, which stand ready to serve incoming requests. ... Maximum number of idle child server processes . ... The MaxSpareServers directive sets the desired maximum number of idle child server processes. ... The MinSpareServers directive sets the desired minimum number of idle child server processes. ...

... The association log contains a list of calibration products used to process a raw file (or a set of raw files). ... The header of the association log contains the name of the association block , a data type tag, a setup tag, and the flag COMPLETE or INCOMPLETE (in case of missing calibrations). ... FLAG: not relevant here (always REAL) . ... OK MCALIB REAL GI_PFEE_071012A_Medusa1_L543.1nm_o3.fits FF_EXTERRORS 0.458 OK MCALIB REAL GI_PDIS_071012A_Medusa1_L543.1nm_o3.fits DISPERSION_SOLUTION 0.462 . ...

... Apache HTTP Server Version 2.2 . ... Execution of CGI scripts . ... Source File: . mod_cgi.c . Any file that has the handler cgi-script will be treated as a CGI script, and run by the server, with its output being returned to the client. ... The default behavior, if AcceptPathInfo is not given, is that mod_cgi will accept path info (trailing /more/path/info following the script filename in the URI), while the core server will return a 404 NOT FOUND error for requests with additional path info. ...

This module provides for forensic logging of the requests made to the server . ... Logging is done before and after processing a request, so the forensic log contains two log lines for each request. ... Module: mod_log_forensic . ... Each log entry is assigned unique ID which can be associated with the request using the normal CustomLog directive. mod_log_forensic creates a token called forensic-id , which can be added to the transfer log using the %{forensic-id}n format string. ...

OptInt PmWiki : Pm Wiki / Forms . ... Forms processing can be found in the Cookbook (see below). ... input text name value size= n :) (:input hidden name value :) (:input password name value :) (:input radio name value :) (:input checkbox name value :) (:input select name value label :) (:input default default-name default-value :) (:input submit name value :) (:input textarea name [=value=] rows= n cols= n :) (:input reset name label :) (:input file name label :) (:input image name "src" alt :) . ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... The combination is based on the two common columns across the tables, the CYCLE column and the QUADRANT column. ... For each row in the combined table that the same CYCLE/QUADRANT pair appears, epauxcomb writes out the noted values to the corresponding columns in the combined table. ... A table labelled PNAUX1 containing the following columns:  FRAME of type int-32  CYCLE of type int-32  FTCOARSE of type int-16  FTFINE of type unsigned int-16  QUADRANT of type int-8  CCDID of type int-8 2. ...

Next: Spectral Line Processing and Up: Spectral Line Data Reduction Previous: ATCA Spectral Line Correlator . ... The ATCA allows you to observe two frequency setups simultaneously ifsel allows you to load just one of them by setting ifsel=1 or ifsel=2 . ... The RPFITS file does not contain the rest frequency of the spectral line observed, so you need to give this at some stage during data reduction - the earlier the better. The rest frequency can be entered (via restfreq , in GHz) in atlod . ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

... Display (spectra, total power). ... Using the data archive. ... entering cmds, editing cmd lines, input from files, batch, run. constants, variables,arrays, structures, operators, procedures, functions. programming in idl . ... A user would call arch_gettbl() to input the table (or a subset of it). corfindpat() can create subsets of the table. arch_getdata() or arch_getonoff() can be used to read in the spectra. ... input the data (spectra) for a subset of the archive table: arch_getdata () . ...

SAOtng supports a shared memory XPA public access point through which it can access FITS data created by external programs. ... xpaset SAOtng"; /* get info about shared segment, including size of segment */ shmctl(shmid, IPC_STAT, ); /* send this info to the SAOtng "shm" public access point */ sprintf(tbuf, fmt, shm_name, shmid, sbuf.shm_segsz); system(tbuf); SAOtng will retrieve an image section from the shared memory segment, scale it, and display it. ...

... MSSSO is part of a collaboration developing a wide field imaging CCD mosaic (WFI). As part of this project, we have developed a GUI based pipeline tool that is an integrated part of MSSSO's CICADA data acquisition environment and processes CCD FITS images as they are acquired. ... This pipeline tool was originally developed for the Wide Field Imager (WFI) being developed jointly by MSSSO , AAO and the University of Melbourne , but it can be used to process other CCD image data. ...

Stellarium 0.12.3 . ... TelescopeClient Class Reference abstract . ... getEnglishName (void) const . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getJ2000EquatorialPos (const StelCore *core) const =0 . ... getEquinoxEquatorialPos (const StelCore *core) const . ... getJ2000GalacticPos (const StelCore *core) const . ... getSideralPosGeometric (const StelCore *core) const . ... getPositionInfoString (const StelCore *core, const InfoStringGroup &flags) const . ...

Main plasma parameters for inhomogeneous plasma. ... Particle motion in the Earth dipole magnetic field. ... Bounce frequency and bounce motion in the Earth inner magnetopshere. ... Low- frequency electrostatic waves in inhomogeneous low- beta plasma. ... Kinetic drift instability. ... Permittivity tensor for electromagnetic low- frequency waves in inhomogeneous low- beta plasma. Drift Alfven waves. ... Spectra of electromagnetic low- frequency waves in inhomogeneous medium- beta plasma. ...

Next: Imaging Polarimetry with NICMOS Up: NICMOS Data Calibration and Previous: The Photometric Performance of . ... NICMOSlook and Calnic C . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... NICMOSlook and Calnic-C are two programs that were designed to take advantage of the fact that the NICMOS grism mode typically consists of taking both a direct and a grism image. ...

In Actor Prolog a resident is a special mechanism that helps processes to inspect state of other processes. A resident observes the state of a specified (target) process and if the state of the process changes (for instance, after message handling) it proves a specified predicate of the process. ... Work of the resident. ... Any change of the list of target processes or arguments of resident function results in activation of the resident and repeated collection of information in the target worlds. ...