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ROSAT Status Report #179: ROSAT NEWS No. 69



Date: Mon, 16 Aug 1999 18:23:52 +0200 (MET DST)
Subject: ROSAT NEWS No. 69

=========================================================================
=                                                                       =
=              ROSAT NEWS No. 69     ---    16-Aug-1999                 =
=                                                                       =
=-----------------------------------------------------------------------=
=                 ROSAT Scientific Data Center at the                   =
=       Max-Planck-Institut fuer Extraterrestrische Physik (MPE)        =
=               Postfach 1603, D-85740 Garching, Germany                =
=-----------------------------------------------------------------------=
=  e-mail address:   rosat_svc@mpe.mpg.de                               =
=  ROSAT Service Area (including ROSAT Data Archive):                   =
=   www address:  http://wave.xray.mpe.mpg.de/rosat                     =
=   ftp rosat_svc.mpe-garching.mpg.de      user: anonymous              =
=   interactive account (including ROSAT Result Archive):               =
=     telnet xray.mpe-garching.mpg.de  user: xray  no password          =
=-----------------------------------------------------------------------=
=  XUV Center: GXUVDC@AIT.PHYSIK.UNI-TUEBINGEN.DE                       =
=   WFC Archive access via telnet/ftp ait.physik.uni-tuebingen.de       =
=                                user: xuv  (password: xuv_archive)     =
=   www address:  http://astro.uni-tuebingen.de/rosat.html              =
=========================================================================

Contents: THE SECOND ROSAT HIGH RESOLUTION IMAGER SOURCE CATALOG


THE SECOND ROSAT HIGH RESOLUTION IMAGER SOURCE CATALOG 
======================================================

The ROSAT Consortium (the Max-Planck-Institut fuer extraterrestrische 
Physik, the Goddard Space Flight Center, the Smithsonian Astrophysical 
Observatory, Leicester University, and the Astrophysikalisches Institut 
Potsdam) announces an update to  "THE ROSAT SOURCE CATALOG 
OF POINTED OBSERVATIONS WITH THE HIGH RESOLUTION IMAGER" (ROSHRICAT). 
This catalog contains arcsecond positions and count rates of detected 
sources from nearly 3000 public ROSAT HRI observations, including 
more than 7500 firm sources (signal-to-noise ratio > 4).

The catalog consists of all primary source parameters from the automated
detection algorithm employed by the Standard Analysis Software 
System (SASS).  In addition each observation has been quality checked, 
both by automatic algorithms and by detailed visual inspection.  The 
results of this quality checking are contained as a set of logical-value 
flags for each principal source parameter.  If a source parameter is 
suspect, the associated flag is set to "TRUE"; parameters with no 
obvious problems maintain the default, "FALSE", value.  In addition to 
the catalog, data products for each screened observation are also 
available.  These data products include the screened source lists, 
FITS images, and ASCII files containing information about obvious real 
sources not detected by the SASS detection algorithms.
 
Detailed information about the catalog and methods of access to the 
catalog and data products can be obtained from the ROSAT Results Archive 
web pages in Germany, in the US, and in the UK:

http://wave.xray.mpe.mpg.de/rosat/rra
http://www.aip.de/groups/xray/rosat/rra.html
http://heasarc.gsfc.nasa.gov/docs/rosat/rra/RRA.html
http://hea-www.harvard.edu/rosat/rsdc_www/rra.html
http://ledas-www.star.le.ac.uk/rosat/rra/

Access to the command-line driven BROWSE interface to the ROSHRI catalog 
is also available via telnet to either legacy.gsfc.nasa.gov  
or ledas.star.le.ac.uk - in each case the username is xray, 
then type "browse roshri" (no quotes) at the command line prompt.

The ROSAT High Resolution Imager Source Catalog will continue to be 
updated as new HRI observations are screened and become public.  New 
versions will be announced via the electronic ROSAT Status reports and 
on the RRA web sites at MPE, GSFC, SAO, AIP and Leicester.

========================= end of NEWS ===================================