. Next: Charged Particle Subtraction Up: *qpspec* - Extraction of Previous: Spectral Extraction of Point . When analyzing extended sources the background must be obtained from a region well separated from the source. To correct the background for the differential vignetting (i.e., the difference between source and background vignetting) of the ROSAT mirror, set the vign_corr flag in qpspec to yes. For example: . xs > qpspec vign_corr=yes . rsdc@cfa.harvard.edu . 1998-06-10

Еще в разделе: (Показать все результаты (>4700) - hea-www.harvard.edu/ )

• *imcnts* - Radial Profile of an extended source at the field center
• Radial profile of an extended source for Einstein IPC data.
• *imcnts* - Azimuthal profile of an extended source

... WFPC2 ETC for Extended Sources + Background - v4.0 . Home . ... Data . ... WFPC2 Home . ... Instrument Home . WFPC2 History . ... Calibration Home . ... LRF Data . ... Data Analysis Home . ... ETCs . ... Brightness: (mag. arcsec -2 ) . ... Line: Ly 1216 C IV 1550 He II 1640 C III 1907 Mg II 2800 0 II 3727 Ne III 3869 H 4340 0 III 4363 He II 4686 H 4861 0 III 4959 0 III 5007 N II 5755 He I 5876 0 I 6300 N II 6548 H 6563 N II 6583 S II 6716 S II 6731 S III 9531 Specify Z Vel. : (units) . ...

Еще в разделе: (Показать все результаты (>17143) - www.stsci.edu/ )

• Plots for Estimating Point Source SNR
• WFPC2 ETC for Extended Sources - v4.0
• Target Count Rates

... 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. ...

Еще в разделе: (Показать все результаты (>13167) - xmm.vilspa.esa.es/ )

• Example 4: Specifying an external detector map for an extended source
• Extended Sources

In calculating the NIFS sensitivity, we adopt a read noise of 5 e - , a dark current of 0.01 e - s -1 pix -1 , and a maximum exposure time of 3600 s. Grating . ... e/pix) . ... OH Cont. (e/pix) . ... NIFS should achieve signal-to-noise ratios of ~ 10 per spectral pixel in a 0.1" 0.1" aperture for single 1800 s exposures on uniform, extended, continuum sources with surface brightnesses of J = 15.4, J = 15.0, H = 14.8, and K = 13.5 mag arcsec -2 using the Z , J , H , and K gratings, respectively. ...

Еще в разделе: (Показать все результаты (>663) - www.mso.anu.edu.au/ )

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

Еще в разделе: (Показать все результаты (>1895) - www.adass.org/ )

• QPSIM: An IRAF/PROS Tool for Source Simulation
• Recreating Einstein Level One Processing Exposure Masks and Background Maps in
• ADASS 2003 Conference Proceedings

HI source finding: 2 novel approaches ATNF, December 2010 Outline · Background · What is source finding? ... Motivation for developing new HI source finding methods · Novel source finding methods · · · · General idea Iterative 3-D median smoothing Characterised noise method Wavelet method · Summary Background What is source finding? ... 3-D median smoothing: Purpose · Goal: Reduce noise while preserving shape · Particularly edges · Median works because it's non-linear · Consider this, Iter. ...

Еще в разделе: (Показать все результаты (>35878) - www.atnf.csiro.au/ )

• Duchamp Source Finder
• casacore: images/Regions/WCExtension.h Source File
• casacore: lattices/Lattices/LCExtension.h Source File

The NICFPS:Dither:Extended Source script allows you to a set of take pairs of dithered source/sky exposures. These pairs of exposures are taken over various points of a small 5-point dither pattern. ... dither point 1 on source . dither point 1 on sky . ... For more information see NICFPS:Dither:Point Source . ... As the script runs the status of each dither point is updated. ... This differs from the NICFPS:Dither:Point Source script, whose dither pattern is aligned with the detector. ...

Еще в разделе: (Показать все результаты (>978) - www.apo.nmsu.edu/ )

• TUI:Scripts:Built In Scripts:NICFPS:Dither:Point Source
• lsst.tcc: include/tcc/telMod.h Source File
• lsst.tcc: python/tcc/mov/fullSlew.py Source File

... Measured Radio Parameters for 116 extended sources without col.10 (T peak) and col.12(Ref.) ... An asterisk in byte 9 indicates that this line refers to the whole source or major parts of it (same as 'c' in byte 38) (1) (2) (3) (4) (5) (6) (7) (8) (9) (11) source Type RA1950 Dec1950 LAS PA Wmaj Wmin PA S_408 cmp h m s +-s d m s +-" (') deg (') (') comp Jy ----+----1----+----2----+----3----+----4----+----5----+----6----+----7- 0002+12 a M2 000208.1 0.3 +123232 9 3.5 105 1.5 ...

Еще в разделе: (Показать все результаты (>4009) - www.sao.ru/ )

• The ROSAT All-Sky Survey Faint Source Catalogue
• Source Positions
• EINSTEIN extended source survey (EXSS)

A Beginner?s Guide to HTML (and much more.. ... From a helpful glossary to loads of examples, your first primer. Extensions to HTML 2.0 . Netscape Navigator supports many standard extensions to HTML, including background patterns, tables , and dynamic document updating. ... A good hotlist of HTML resources around the Web. Examples, style guides, Netiquette, and more. Composing HTML 4.0 Compliant Documents . ... Cascading Style Sheet . ... Javascript links . ... What?s HTML . ...

Еще в разделе: (Показать все результаты (>10118) - www.arcetri.astro.it/ )

• mod_dir - Apache HTTP Server
• SWXCS
• mod_authn_alias - Apache HTTP Server

... Galaxy Evolution home . ... The origin and evolution of radio sources . Radio sources and their environments . ... We are investigating how this interaction effects galaxy evolution in general as well as the feedback effect of the radio source on its host galaxy and AGN. ... One direct observational manifestation of this interaction is the existence of extended regions of emission-line gas which show a clear spatial relationship to the radio source itself. ...

Еще в разделе: (Показать все результаты (>4293) - www.mrao.cam.ac.uk/ )

• Computing dispersive atmospheric delay with AATM
• Computing dispersive atmospheric delay with AATM Bojan Nikolic web pages (r.
• exchange.h Source File

IRAF/STECF 2-D spectrum point source / background decomposition package . ... The general problem is one of spectral decomposition - of separating the spectra of the point sources from the background. ... The STECF IRAF layered package "specres" provides two tasks to extract point source spectra from 2-D images (either longslit, multislit or cross-dispersed) and decompose the full background over the image. ... A Point Source Function spectrum image is required as a 2-D spectrum. ...

Еще в разделе: (Показать все результаты (>46406) - www.eso.org/ )

• KMOS Exposure Time Calculator
• Previously Identified Sources
• ESO - Librarians' Professional Resources

... Now we present the topographical map for the COOC criterion calculated for both galactic X-ray sources taken from Table  4 and binary pulsar species from Table  6 in coordinates the initial mass ratio exponent - mean kick velocity (Figure  26 ). ... Figure 26: The COOC criterion for X-ray galactic sources and binary radiopulsars versus the initial mass ratio exponent and mean space kick velocity for different kick velocity distributions. ...

Еще в разделе: (Показать все результаты (>730) - xray.sai.msu.ru/ )

• Effect of sources evolution on
• Population Synthesis of X-ray Sources at the Galactic Center
• Scientific Interests

Family ASTRO Event Leaders can follow the links below to find a number of resources and more background reading to help them with their Astronomy Events and expand their knowledge on the topics covered in our series of Leader Kits for educators. ... Print and Web Resources on the Night Sky . ... If you have questions about Family ASTRO, see our Frequently Asked Questions for Educators and Astronomers page , or our Frequently Asked Questions for Families and Friends page. ...

Еще в разделе: (Показать все результаты (>1389) - www.astrosociety.org/ )

• ASP: Educational Resources
• ASP: Black Holes: An Introductory Resource List
• ASP: Astronomical Pseudo-Science: A Skeptic's Resource List

... Light sources: POV-Ray works with point sources of light. ... A real star consists of a spherical light source (the photosphere where the continuum is formed) superimposed by a scattering layer (an atmosphere) responsible for phenomena such as limb darkening and absorption lines. ... For example, in order for the central light source to illuminate the surface, the star must be transparent. ... The POVRay source for creating the white dwarf binary merger movie is given for demonstration purposes. ...

Еще в разделе: (Показать все результаты (>2488) - star.arm.ac.uk/ )

• IAJ: Resources: Observatories
• Armagh Observatory
• IAJ: Resources

... Appendix B. FTS Parser Example . ... This is a test_ parser .c #ifdef PG_MODULE_MAGIC PG_MODULE_MAGIC; #endif /* * types */ /* self-defined type */ typedef struct { char * buffer; /* text to parse */ int len; /* length of the text in buffer */ int pos ; /* position of the parser */ } ParserState ; /* copy-paste from wparser.h of tsearch2 */ typedef struct { int lexid; char *alias; char * descr ; } LexDescr; /* * prototypes */ PG_FUNCTION_INFO_V1(testprs_start); Datum testprs_start( ...

Еще в разделе: (Показать все результаты (>3744) - www.sai.msu.su/ )

• ntptrace - trace a chain of NTP servers back to the primary source
• Open Source Convention

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

Еще в разделе: (Показать все результаты (>1254) - jet.sao.ru/ )

• Plug-and-Play-HOWTO : Tell the Driver the Configuration
• Search for distant radio galaxies in SAO
• di_eks

Еще в разделе: (Показать все результаты (>502) - zebu.uoregon.edu/ )

• THE HUBBLE LAW JAVA APPLET
• Environmental Studies 202: Winter 1999
• Biomass

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" . ...

Еще в разделе: (Показать все результаты (>435) - www.astronomy.net/ )

• NASA-MSU Center for Educational Resources, CERES, AstroGuide Listing
• Re: Re: Thanks For Making And And Of An Excellent Open Source Progra - an
• Re: Thanks For Making And And Of An Excellent Open Source Progra - an Astronomy

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

Еще в разделе: (Показать все результаты (>286) - mavr.sao.ru/ )

• Study of radio spectra and variability of GPS sources
• Detection of polarized radiation sources with unusual spectral characteristics
• IRAS01005+7910

. Comment on J2206-1835 . Resolved: the source is extended, and has been detected only on the short Australian baselines at 2.3 GHz by Preston et al. (1989). Moellenbrock et al. (1996) did not detect the source in the 22 GHz VLBI survey. The correlated flux density is 1.2 Jy on the shortest VLBA baseline (see Figure 3). VLBApls home page . Last modified: 16 Oct 2000

Еще в разделе: (Показать все результаты (>444) - www.vsop.isas.ac.jp/ )