This project was perfomed during an
internship at the observatory Gemini
North, located in Hilo, Hawaii. It con-
sists in studying vibrations generated on
the telescope primary mirror and finding
appropriate solutions to compensate for
them.
Telescope vibrations can greatly affect the
quality of the produced images and dete-
riorate science observations. In 2011 sev-
eral cases of image degradation were re-
ported and a team was formed to study
the disturbances origins. Their findings
showed that the resonant frequencies
from the cryogenic coolers were being
propagated until the primary mirror sup-
port structure, and consequently reach-
ing the primary mirror. To compensate
for those vibrations, the secondary mirror
should perform fast tip/tilt corrections.
This report studies the telescope systems
responsible for the tip/tilt control and the
sensing of the previously identified dis-
turbances, with the purporse of identify-
ing possible issues in the current setup.