69D0293A.html |
RA Range: --
Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 2.0 2CLR 5.0 1.0 30
| Pre-imaging run? |
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Chilean run? |
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Special calibrations? |
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| Time critical? |
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ToO? |
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Carry-over run? |
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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.
README of this run: