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An imaging technique with sensitivity to short duration optical transients isdescribed. The technique is based on the use of wide-field cameras operating ina drift scanning mode, whereby persistent objects produce trails on the sensorand short duration transients occupy localised groups of pixels. A benefit ofthe technique is that sensitivity to short duration signals is not accompaniedby massive data rates, because the exposure time >> transient duration. Thetechnique is demonstrated using a pre-prototype system composed of readilyavailable and inexpensive commercial components, coupled with common codingenvironments, commercially available software, and free web-based services. Theperformance of the technique and the pre-prototype system is explored,including aspects of photometric and astrometric calibration, detectionsensitivity, characterisation of candidate transients, and the differentiationof astronomical signals from non-astronomical signals (primarily glints fromsatellites in Earth orbit and cosmic ray hits on sensor pixels). Testobservations were made using the pre-prototype system, achieving sensitivity totransients with 21 ms duration, resulting in the detection of five candidatetransients. An investigation of these candidates concludes they are most likelydue to cosmic ray hits on the sensor and/or satellites. The sensitivityobtained with the pre-prototype system is such that, under some models for theoptical emission from FRBs, the detection of a typical FRB, such as FRB181228,to a distance of approximately 100 Mpc is plausible. Several options forimproving the system/technique in the future are described.

High Cadence Optical Transient Searches using Drift Scan Imaging I: Proof of Concept with a Pre-Prototype System