was originally designed, developed, documented, and maintained by:

Tomaso Belloni	Timing Analysis
Carlo Izzo	Data Preparation & System
Peter Kahabka	Spatial Analysis
Ortwin Schwentker	Spectral Analysis & General Tools
Uli Zimmermann	Overall System

The system, as now available, would not have been possible without the active support of a large number of colleagues contributing code originally developed for their own purposes. The following list can only mention major contributions to :

W. Becker	Spectral and timing analysis
T. Belloni	Timing analysis
G. Boese	Point spread functions
T. Boller	Screening software
H. Brunner	Intensity profiles
K. Dennerl	Astrolib
S. Döbereiner	Spatial analysis
R. Egger	Background determination
J. Englhauser	PostScript images
Freyberg	Housekeeping, background, calibration
R. Gruber	ROSAT Standard Analysis Software
G. Hartner	ROSAT Standard Analysis Software
G. Hasinger	Maximum Likelihood, point spread function, ...
C. Izzo	Data preparation, correction, ...
P. Kahabka	Spatial analysis
A. Manook	PostScript images, time phase selection
W. Pietsch	Different algorithms
C. Rosso	ROSAT Standard Analysis Software
J. Schmitt	Maximum Likelihood (source detection)
N. Schulz	Image filtering
R. Schwarz	Raymond-Smith spectra
O. Schwentker	Spectral analysis, general tools, ...
K. Straub	Access to archive images
R. Supper	Exposure map, source merging
W. Voges	ROSAT Standard Analysis Software
A. Vogler	Extended image contouring (PS)
U. Zimmermann	Overall system

We would like to aknowledge the excellent support from the MIDAS people at ESO, which were always open to implement new features related to or to remove inconsistencies in the system on short timescales. Thanks also to the many users of that send us comments or pointed to bugs or problems. Without their continuous help the system could not have been made as safe and stable. Let us continue along these tracks.