69D0293A.html


Last update of this page: Thu Apr 24 17:45:05 2003
Last update of the USG file: Nov 6 15:15:42 2002

Major Instrument Modes: FORS1 - PMOS, IPOL

RA Range: --

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 2.0 2CLR 5.0 1.0 30


Pre-imaging run? No! Chilean run? No! Special calibrations? No!
Time critical? No! ToO? Yes! Carry-over run? No!


Special Remarks:
This is a ToO. Wait for user"s triggering.


 
  
 
This is a ToO programme for gamma-ray burts afterglows.
The purpose of this part of the project is to determine the beaming geometry,
by measuring the change of polarization degree and angle over the first
hours. This will allow the users to distingush between the jet and wind
models.

The users have submitted 4 OBs, two for IPOL (lin+circ) and two for
PMOS (lin+circ). The exposure times have been calculated for a R=17
target.
The trigger for the observations will come within less than 7 hours
after the GRB discovery and the observation should be executed within the
same night. The users will notify ESO and provide required finding charts
and further instructions, including the names of OBs to be executed and
the exposure times to be inserted by PSO on the basis of target brightness.
Some OBs will possibly have to be repeated, according to the PI instructions.
 
Note that the PI asked for windowing in PMOS. Please, make sure that all
required day-time calibrations are obtained.


 


Information about the progress of this run:

Run status page 69.D-0293A

README of this run:

69.D-0293A.README