Synthetic tracking using ZTF Long Dwell Datasets
2019
The Zwicky Transit Factory (ZTF) is a powerful time domain survey facility
with a large field of view. We apply the synthetic tracking technique to
integrate a ZTF's long-dwell dataset, which consists of 133 nominal 30-second
exposure frames spanning about 1.5 hours, to search for slowly moving asteroids
down to approximately 23rd magnitude. We found more than one thousand objects
from searching 40 CCD-quadrant subfields, each of which covers a field size of
$\sim$0.73 deg$^2$. While most of the objects are main belt asteroids, there
are asteroids belonging to families of Trojan, Hilda, Hungaria, Phocaea, and
near-Earth-asteroids. Such an approach is effective and productive. Here we
report the data process and results.
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