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\section{Time line}  The Gaia satellite was launched on consist of two telescopes, which are projected onto one focal plane. The time between  the 19th December 2013, two fields of view being observed is 106.5 mins  and has now successfully been placed into orbit around the second Lagrange point. Over the next few months then  the telescope will undergo system shake-down and ESA commissioning (Figure~\ref{fig:timeline}). It time between subsequent scans  is planned that in June 6 hours. After these initial observations  the Gaia satellite field  will spend a month scanning the Ecliptic Poles internally verifying be revisited every $\sim$10-30 days. Over  the data, and learning how to identify large amplitude variable stars (potential contaminants full mission each patch  of sky will be measured, on average, approximately 70 times. The densest coverage is at 45 degrees to  the GSA stream). ecliptic plane and this region is covered with approximately 200 epochs.