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 .