ROSAT Status Report #180: ROSAT NEWS No. 70

[Michael Arida <arida@milkyway.gsfc.nasa.gov>]

Date: Wed, 22 Mar 2000 14:22:46 +0100 (MET)
Subject: ROSAT NEWS No. 70

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=                                                                       =
=              ROSAT NEWS No. 70     ---    22-Mar-2000                 =
=                                                                       =
=-----------------------------------------------------------------------=
=                 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 address:  ftp://wave.xray.mpe.mpg.de/rosat   or                 =
=                 ftp.xray.mpe.mpg.de    user: anonymous                =
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Contents: RELEASE OF ROSAT ALL-SKY SURVEY DATA


Dear colleagues,

the ROSAT all-sky survey reprocessing (RASS3) has been completed; we are 
happy to announce herewith the release of the RASS3 data to the 
scientific community.
 
There are 1378 RASS3 fields each 6.4 deg*6.4 deg covering the whole sky.
Neighboring fields are overlapping by at least 0.23 degrees. Each field
can be identified by an equatorial latitude zone number (running from 1
to 33) and an equatorial longitude segment number (running from 1 to 64, 
depending on the zone number). 
Accordingly there are 1378 directories in the ROSAT Data Archive each 
containing a README file and 10 standard FITS files. The names of the 
data directories have been adapted to match other ROSAT archival data.
A 6-digit number (ROR number) is followed by 'p' for the detector used 
(PSPC). The ROR number consists of '93' as the first two digits ('9' for 
the ROR category 'other and survey data','3' stands for RASS3), digits 
3 and 4 correspond to the zone number, 5 and 6 to the segment number.
RASS FITS data files start with the 2 characters "rs" to indicate survey 
data.

There are several ways to retrieve the ROSAT all-sky survey data;
they are listed in the help file to be found in our web page:
http://www.xray.mpe.mpg.de/cgi-bin/rosat-survey
 
for example this is how to get access to the data of the equatorial 
pole-region 930101p by anonymous ftp:
 
ftp ftp.xray.mpe.mpg.de
anonymous
your email address
  
ftp> cd rosat/archive/900000/930101p
ftp> ls
rs930101n00_bas.fits.gz
rs930101n00_bk1.fits.gz
rs930101n00_bk2.fits.gz
rs930101n00_bk3.fits.gz
rs930101n00_im1.fits.gz
rs930101n00_im2.fits.gz
rs930101n00_im3.fits.gz
rs930101n00_ime.fits.gz
rs930101n00_mex.fits.gz
README
rs930101n00_anc.fits.gz
ftp> bin
ftp> mget *
ftp> quit

The *bas file contains basic science data (photon events)
the *anc file contains ancilliary data like eventrates, aspect,quality 
         (but no orbit data yet)
the *im1 file contains the broad band (0.1-2.4 keV) 512*512 pixel images 
the *im2 file contains the hard  band (0.1-0.4 keV) 512*512 pixel images 
the *im3 file contains the soft  band (0.5-2.0 keV) 512*512 pixel images 
the *ime file contains the energy (0.1-2.4 keV) 512*512 pixel images  
the *bk1 file contains the broad band (0.1-2.4 keV) 512*512 pixel bkg 
         images
the *bk2 file contains the hard  band (0.1-0.4 keV) 512*512 pixel bkg 
         images
the *bk3 file contains the soft  band (0.5-2.0 keV) 512*512 pixel bkg 
         images 
the *mex file contains the exposure pixel image  

Questions or suggestions should be addressed to survey@xray.mpe.mpg.de

If you are using the ROSAT all-sky survey data we kindly request you
to acknowledge the use:
" this research has made use of the ROSAT all-sky survey data which have
  been processed at MPE "

for the ROSAT-team at MPE:
Jakob Englhauser,  Joachim Truemper ,  Wolfgang Voges

Garching, 21. March 2000

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