... 389Voges+ IX/29 ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000) ============================================================================= ROSAT All-Sky Survey Faint source Catalogue (RASS-FSC) Voges W., Aschenbach B., Boller Th., ... The sources have a detection likelihood of at least 7 and contain at least 6 source photons. ... 0 Extraction radius 141-146 A6 --- PrioFlags [01] priority flags (8) 147 A1 --- PHA [ABCDb] PHA range of best detection (9) 149-152 F4.2 --- VigFactor ?= ...

... Full details of the observations, data reduction and calibration of this survey, and the production of the 7C(G) compact source list, are described in Vessey & Green (1998, MNRAS, 294, 607) . ... b |<5њ, with a resolution of about 1.2 ? ... The survey consisted of 24 fields, spaced 3њ.5 in l , and alternating between b = +3њ and -3њ, but with a gap near l = 110њ. ... Please refer to the source list description for details of the entries ; the catalogue itself is available as: . ...

Next: *tabplot* - Displaying a Up: Radial Profiles and Projections Previous: Radial Profiles and Projections . Obtain a radial distribution of counts for the source centered at x = 503, y = 513, in the data image xdata$snr.qp . The background is taken locally from an annulus outside the source region. ... Region descriptors can also be given on the command line, but they must be enclosed by quotes. xs> imcnts xdata$snr ``a 503 513 0 50 n=5'' . ...

... 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) . ...

... Duchamp | ... Top | Duchamp is a solution to this problem of three-dimensional source finding. ... A list of the detections and their properties, as well as the input parameters that were used. [text file] . ... It can be downloaded in source format, in a gzipped tar archive. ... Changes from the previous version can be seen here (this file is included in the tar archive), while the archive files and documentation from the previous release versions are here , if you are really interested. ...

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. ...

USING THE CORRELATION BETWEEN ISGRI SURVEY RESULTS AND OTHER CATALOGUES TO AID SOURCE IDENTIFICATION John B. Stephen, A. Malizia and L. Bassani IASF-INAF, Via P. Gobetti 101, 40129 Bologna, ITALY, E-mail: stephen@iasfbo.inaf.it ABSTRACT In order to help in the identification of INTEGRAL/ISGRI sources, we have developed a software package which allows a rapid and detailed cross-correlation to be performed between various source catalogues. ... We show below some preliminary results from this analysis. ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

... Public . ... Science Users Information > Science Publications > Science Announcements > Release of Stacked Images and Source Lists for VST ATLAS Public Survey . ... Observing with ESO Telescopes . ... Public Surveys . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... Stacked reduced images, weightmaps, and single-band source lists are provided in this release for a total volume of 5 TB. The ATLAS Public Survey data release is accompanied by a comprehensive description . ...

... 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. ...

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. ...

... Point sources in FF modes: Source and background regions could be well defined. ... XMM-Newton Martin Stuhlinger, ESAC 2 Examples XMM-Newton Martin Stuhlinger, ESAC 3 Working scheme for PN FF/MOS · Get particle+electronic background from out-FOV regions. ... Subtract particle bkg from user defined bkg to get photon background. ... XMM-Newton Martin Stuhlinger, ESAC 4 PN SW / Extended sources · No out-FOV area: Template for particle background needed. ... XMM-Newton Martin Stuhlinger, ESAC 6 ...

Next: CORRELATOR BOARDS Up: OBSERVING PROCEDURES Previous: Frequency Switching . ... Continuum sources in the list used for flux density calibration were selected in an ad-hoc fashion from a variety of places, but primarily from Kuehr et al (A&AS, 45, 367, 1981), the compendium of linearly polarized sources by Tabara & Inoue (A&AS, 39, 379, 1980), and an unpublished list of unconfused calibrator sources prepared from the NVSS survey by Jim Condon and Qi Feng Yin. ... Board 0 . ...

... Download the code document. A new version will be released soon with a more detailed document. An X-ray source detection algorithm, optimally designed to detected faint extended sources, making use of Voronoi tessellation and Friend-of-Friend technique. ... This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License. Download sweepline.py . ... ROSAT 400d . ROSAT MACS . ROSAT WARPS . ROSAT REFLEX . ... XMM XCS . ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

... The VSOP Survey Continuum Source List . The radio sample for the VSOP continuum survey was defined to include all extragalactic radio sources with: . a total flux density at 5 GHz, S>=1.0 Jy . ... The sample also included all sources in the sky with a 5 GHz flux density S>5 Jy, regardless of spectral index and galactic latitude. ... The source would then be included in the VSOP sample (three of the sources were found with a flux density above 1 Jy and added to the sample). ...

... 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. ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

home education > resources . ... Selected Resource Guides . ... Introductory . ... Articles on Education from Mercury Magazine Hunt down some good ideas and resources in these archived articles from the "Education Newswire" and "Black Holes to Blackboards" departments of our membership magazine, Mercury . ... Selected Resource Guides Gather some great background reading from these annotated astronomical resource guides: . ... Environmental Issues and Astronomy: An Introductory Resource Guide . ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...