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ROSSTL: Help

ROSSTL - ROSAT Short-term Timeline

Overview

The ROSSTL database is based on the ROSAT short term timeline. This is generated by MPE approximately one week in advance of observations, and is incorporated into the database (via the UKDC) accordingly. It contains details of all scheduled pointed observations on a one entry per slot basis, where a "slot" is an interval of constant celestial pointing with detector HTs switched on.

Parameters

Ror
The ROSAT observation request sequence number.
Rday
The ROSAT day number at the start of the slot (June 2, 1990 has RDAY = 1).
Day
The calendar date of the start of the slot in the form YYMMDD.
Start
The UT start time of the slot.
End
The UT end time of the slot.
Instr
The instrument at the focus of the XRT.
Cont
A continuation flag. Set to 1 when an ROR is complete, 0 otherwise.
Country
The originating country of this ROR.
Zoom
Wide Field Camera Zoom mode switched on?
Solar_Ang
The Solar aspect angle at the start of the slot.
Earth_Ang
The minimum earth angle at the start of the slot.
Sun_Ang
The mean angle between the sun and the spacecraft at the start of the 
slot.
Elapsed
The total number of seconds that will have been spent on this ROR by the 
end of this slot.
Constraint
The type of time constraint under which the observation was scheduled, if 
any; i.e., monitoring observation, phase dependant observation, coordinated 
observation, or contiguous observation.
Aox
Is the atomic oxygen constraint violated?
Night
Percentage of the slot that the spacecraft spends in the earth's shadow.
Wfilt
Wide Field Camera filter.
RA
Target Right Ascension.
Dec
Target Declination.
Xoff
X pointing offset.
Yoff
Y pointing offset.
Xfilt
XRT filter wheel position (Open, Boron or Closed).  During reduced pointing 
mode (RORs 171nnn) the filter may be in the open position for some fraction 
of the observing slot even if the filter position is given as closed.
Duration
Number of seconds of observation in this slot.  
PI_Number
PI Number.
Target_Number
Target Number.
PI
PI name.
Name
Target Name.

Contact Person

Questions regarding the ROSSTL database table can be addressed to the HEASARC User Hotline.
If you have any problems, please consult the help page or mail ledas-help@star.le.ac.uk
 
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