Due to the big and light structure of the MAGIC -Telescope, a
correction for bendings and misalignments of the telescopes axis is
neccessary.
This correction is done in the pointing- and tracking-software. A
description of the implemented algorithms can be found
here or downloaded
(ps, pdf).
To get the coefficients for the pointing model, many datasets of
nominal and real pointing positions are neccessary.
To get a good pointing model at least 300 datasets are needed.
Instructions how to take data for the Pointing Model and the
Starguider (take tpoints) can be found
here.
If you have taken already some TPoints, there will still be "holes" in
the sky, where no TPoints have been taken yet.
The root-macro findstar.C is looking for stars, which are suitable for
TPoints.
Find instructions how to use this macro
here.
Do a new pointing model:
To do a new pointing model, one has to
fit the parameters of the
pointing model with the new datasets and put the new parameters from
the fit into the software.