source: trunk/MagicSoft/GRB-Proposal/Strategies.tex@ 6091

\section{Proposed Observation Strategies}

First of all let's consider how many observations are we going to do.\\

A rough estimation of the time consume due to GRB observation comes out
from the claimed GRB observation by SWIFT, of about 150-200 GRBs/year, and
the results on the studies on the MAGIC duty-cycle made by
Nicola Galante \cite{GALANTE} and Satoko Mizobuchi \cite{SATOKO}.
Considering a MAGIC duty-cycle of about 10\% and a tollerance of 5 hours
to point the GRB, we should be able to point about 1-2 GRB/month. 
Such duty-cycle studies, made before MAGIC started its observations,
are reliable as long as weather constraints that were considered
(~maximum wind's speed of 10 m/s, maximum humidity of 80\% and
darkness at astronomical horizon~) revealed similar to the real ones that
are affecting MAGIC's observation time. In this duty-cycle study
also full moon night are considered usefull (~just requiring
a minimum angular distance of the GRB from the moon of 30$^\circ$~),
while 3-4 nights per month are actually skipped because of full moon,
but this reduction of the real duty-cycle is about compensated
by the tollerance of 5 hours for considering the alert 
(~5 hours more before the beginning of the night usefull
for getting GRB's alerts are equivalent to an increase 
of the duty-cycle of about 6 days per month~). Actually 
observation's interruptions due to technical tasks are
not considered here. \\

All this discussion tells us that, excluding from our
considerations interruptions of the observing time due to
technical tasks, MAGIC should employ 1-2 nights per month
in GRB observations. This means that we must do as much
as possible to observe them EVERY time that a usefull
alert occours.

\subsection{What to do with the AMC ? }

\ldots {\bf MARKUS G. } \ldots

\subsection{What to do with moon shine ? }

The telescope's slewing in case of a GRB alert will be done
without closing the camera lids, so that the camera could be
flashed by the moon during such movement. In principle
a fast moon-flash shouldn't damage the PMTs, but the behaviour
of the camera and of the Camera Control {\it guagua} must
be tested. Otherway, if such test concludes that it is not safe
at all to get even a short flash from the moon, the possibility
to implement a new feature into the Steering System wich
follow a different path while selwing must be considered.


\subsection{Calibration }

\ldots {\bf MARKUS gAUG} \ldots


\subsection{In case of follow-up: Next steps}

Analysis during day:
\par
If some significance is seen, observe the same position next night to get some OFF-data.