SkyMapper Main Survey
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Authors
Wolf, Christian
Onken, Christopher
Luvaul, Lance
Schmidt, Brian
Bessell, Michael
Chang, Seo-Won
Da Costa, Gary
Mackey, Dougal
Murphy, Simon
Shao, Li
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Canberra, ACT : The Australian National University
Abstract
Most of SkyMapper's observing time is now dedicated to the Main Survey. The survey scheduler aims to finish a field mostly within one moon period. A first visit in dark conditions establishes a colour sequence with all six bands observed in the space of 20 minutes. Further visits in subsequent nights under dark or grey sky conditions add exposure pairs in g- and r-band, while in grey or bright conditions pairs in i- and z-band are added. A second colour sequence in dark conditions finishes the set. Further pairs in i- and z-band are also observed during astronomical twilight. These twilight observations may be separated by many months from the night-time visits.
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Open Access