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We have realised a simple prototype system to perform searches for shorttimescale optical transients, utilising the novel drift scan imaging techniquedescribed by Tingay (2020). We used two coordinated and aligned cameras, withan overlap field-of-view of approximately 3.7 sq. deg., to capture over 34000 X5 second images during approximately 24 hours of observing. The system issensitive to optical transients, due to an effective exposure time per pixel of21 ms, brighter than a V magnitude of 6.6. In our 89.7 sq. deg. hr ofobservations we find no candidate astronomical transients, giving an upperlimit to the rate of these transients of 0.8 per square degree per day,competitive with other experiments of this type. The system is triggered byreflections from satellites and various instrumental effects, which are easilyidentifiable due to the two camera system. The next step in the development ofthis promising technique is to move to a system with larger apertures and widerfields of view.

publications of the astronomical society of australia/publications astronomical society of australia

High Cadence Optical Transient Searches using Drift Scan Imaging II:  Event Rate Upper Limits on Optical Transients of Duration <21 ms and  Magnitude <6.6