... Category: CLEAN, MANIPULATION, RADIO, TABLES File: clean.c Author: K.G. Begeman Description: CLEAN finds point source components and subtracts them with their antenna response. ... Keywords: INSET= Set and subset(s) of dirty map(s)/line(s). Maximum number of subset(s) is 2048. ... DEFSET= Set and subset(s) for definition of search area [Search area defined by box]. CLEAN looks for components only where the values in these maps/lines are not equal to BLANK. ... CUTOFF= Cutoff level [0.0]. ...

... Bojan Nikolic web pages (r. 329) . ... SCons user manual http://www.scons.org/doc/1.2.0/HTML/scons-user/book1.html . SCons man page (on web at http://www.scons.org/doc/HTML/scons-man.html , or man scons ) . ... SCons is a tool to build compile source code into (closer-to) executable format. ... Curiously, the shared-library SCons builder will accept multiple identical sources and pass them all to the linker, which will normally lead to ?multiple definition? errors. ... Introduction to SCons . ...

... Previous: ESO C Library for an Image Processing Software Environment (eclipse) . ... A new CLEAN-type algorithm searches for model components not in the dirty image but in the multi-resolution wavelet transform of the dirty image based on the dirty beam. ... The improvement of this prototype Wavelet CLEAN, which does convolve with the dirty beam, can be attributed to a suppression of noise and aliasing in the dirty image by use of information in the sidelobes of the whole image domain. ...

ntptrace [ -vdn ] [ -r retries ] [ -t timeout ] [ server ] . ntptrace determines where a given Network Time Protocol (NTP) server gets its time from, and follows the chain of NTP servers back to their master time source. ... Note that the stratum is the server hop count to the primary source, while the synchronization distance is the estimated error relative to the primary source. ... Prints verbose information about the NTP servers. ...

... 88, Jan. 1983, p. 1-15. l. A survey of extragalactic radio sources made using driven declination scans is reported covering an area of about 0.07 sr to a limiting flux density of 35 mJy. The fast-scan survey was carried out at a galactic latitude greater than 17 deg with the NRAO 91-m telescope operating at 4.755 GHz, and the 480 sources detected were reobserved at 1.4 GHz with the National Astronomy and Ionosphere Center 305-m telescope at Arecibo. ...

Computing LST Rise and Set Times at AO . ... Source Name: . RA (J2000): . ... Dec (J2000): . ... Each line should have, Source name, RA (hhmmss.s), Dec (ddmmss.s) . ... Enter the List . Use the List from a file) . ... Exclude rise times . Exclude transit times . Exclude set times . ... This tool computes the LST rise, transit and set times at Arecibo for a source using the program srcTimes (written by Phil Perillat) ...

... Archives . ... Statistically speaking, ?false sources? are generally in the domain of Type II Type I errors, defined by the probability of detecting a signal where there is none. ... More than 2.3% of the sources are flagged as spurious. ... Type II error is claiming no signal when there is signal (failing to reject the null hypothesis when the alternative is true). Type I error is rejecting the null hypothesis when the null is true, i.e. detecting signal under no signal. ... Chandra Blog . ...

... This thread illustrates a step-by-step recipe to perform EPIC sources detection. ... However, some users - in particular SAS novices - may find useful to perform each individual step of the source detection algorithm, to achieve a better control and understanding of its outcomes. ... The event list MOS.evt is assumed to have been already cleaned for high-background intervals, following, e.g. , steps 3. to 5. in the edetect_chain thread . ... An example of MOS background map is shown in Fig.3. ...

Next: C Standard Library Functions Up: Common C Compiler Options Previous: Common C Compiler Options . c Suppress linking with ld(1) and produce a .o file for each source file. A single object file can be named explicitly using the -o option. ... Sends the output to the standard output, or to a file named with the -o option. Includes the cpp line numbering information. ... When this option is given, the -O and -R options are suppressed. -help Display helpful information about compiler. ...

Stellarium 0.12.3 . ... FileљStructure . FileљList . ... core . modules . Skylight.hpp . ... 33 љ float color[3]; // 3 component color, can be RGB or CIE color system . ... 48 љ void setParams( float sunZenithAngle, float turbidity); . ... 109 љ float zenithLuminance; // Y color component of the CIE color at zenith (luminance) . 110 љ float zenithColorX; // x color component of the CIE color at zenith . 111 љ float zenithColorY; // y color component of the CIE color at zenith . ...

The Astronomy Net . Articles | AstroGuide | ... Forums . ... H ere you can find resouces to help understand perhaps the grandest of all sciences. ... Upcoming Sky Events . ... This site includes lists of manufacturers, vendors, software, etc. organized in the AstroGuide to help when you are looking to purchase your tools. ... Astronomy Articles . ... Are you interested in writing an article for the Astronomy Net? ... www.astronomy.net . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

CCD Performance . ... The dark current appears to have two components: one from electronic sources in the CCD, and a second component whose strength correlates with the cosmic ray flux. ... As of this writing, the " DARKTIME" keyword in the WFPC2 image headers does not reflect correctly the actual time during which the CCD collects dark current. ... External exposures of 180s or longer made with the serial clocks off (CLOCKS=NO; the default setting) suffer an additional 60s of darktime (restart=1). ...

... SPARCompiler(TM) Fortran 90 1.0 . FORTRAN 77 3.0.1 . ... important of these. -ansi: Report non-ANSI extensions. -c: Suppress linking, produce .o files -e: Recognize extended (132 character) source lines -fast: Specify common set of performance options - fixed : Interpret all Fortran source files according to fixed form rules -flags: Print summary of compiler options -fnonstd: Non-standard initialization of floating-point hardware -fnonstop: Execute without trapping on invalid, overflow ...

... Imaging interferometry data presents us with two challenges: the aperture plane (i.e. the complex visibility function) is sparsely sampled, and the baseline phases are "totally corrupted" by the atmosphere while the closure phases, i.e. the sum of three closed loop baseline phases, is free of systematic errors. The two algorithms to take care of these challenges are deconvolution and phase self-calibration. The deconvolution algorithm we use is the CLEAN algorithm. ...

. Comment on J1130-1449 . There are two dominant components in our image. Comparison with the 15 GHz image of Kellermann et al. (1998) reveals that the western component is brighter at the higher frequency, indicating that the brighter (eastern) component in our image may have a steep spectrum. VLBApls home page . Last modified: 16 Oct 2000

... The variability of the spectrum of the optical component of the IR-source IRAS01005+7910 was discovered for the first time in the BTA spectra [1]. ... The spectral features include absorptions that form in near-photospheric layers, narrow envelope emissions, and emission-absorption profiles that form in photosphere-to-envelope transition layers (the wind). ... Discovery of spectral variation in the optical counterpart of IRAS01005+7910. ... Dashed line - envelope curve of all the SiII 5979 profiles ...

... 13-Aug-2014 12:13 106K lk_20140815_0905.tar.. 15-Aug-2014 09:06 106K lk_20140901_0823.tar.. 01-Sep-2014 08:23 103K lk_20141016_1324.tar.. 16-Oct-2014 13:25 103K lk_20141211_1708.tar.. 11-Dec-2014 17:08 103K lk_20150430_0315.tar.. 30-Apr-2015 03:15 103K lk_20150430_0420.tar.. 30-Apr-2015 04:20 103K lk_20150818_1511.tar.. 18-Aug-2015 15:11 104K lk_20151113_1903.tar.. 13-Nov-2015 19:04 105K lk_20160314_0610.tar.. 14-Mar-2016 06:11 105K . ...

... There is no question about the source of ionospheric plasma , since it is created from the ambient neutral atmosphere by ionization. However, the source of magnetospheric plasma is a much more complicated question: although it seems obvious that both solar wind and ionosphere feed it, the relative importance of these two sources is unclear. ... Protons (H + ) are the primary ions in solar wind and one of the major components in ionospheric outflows, and thus not good indicators of their source. ...

... Natalya V. Raguzova and Sergei B. Popov . ... We present a compilative catalogue of Be/X-ray binaries and candidates in the Galaxy and in the Large and Small Magellanic Clouds. This catalogue contains 160 sources and provides information on names and spectral types of optical components, distances, on spin characteristics of neutron stars, and on orbital and X-ray properties of binary systems. ... Be/X-Ray Binaries and candidates in the Galaxy . Galactic sources: comments to the Table 1 . ...

As of 1.3, the Apache source directories have been re-organised. This re-organisation is designed to simplify the directory structure, make it easier to add additional modules, and to give module authors a way of specifying compile time options or distribute binary modules. ... The non-module source files have moved from src into src/main . ... Configure . ... For example, say it is called mod_demo.c. The archive for this module should consist of two files, in a suitable directory name. ...