STEREO/HI - from near-Earth objects to 3D comets

Scientific objectives are being compared with hardware capabilities in order to fully exploit the capabilities of the STEREO heliospheric imager (HI). This has involved detailed image simulation work and efforts to produce a set of observational plans to tackle specific scientific questions. While the primary mission for this instrument is to study the development and propagation of coronal mass ejections, several additional novel science studies have been proposed. These include; the detection and study of near-Earth objects and the imaging of comets in three dimensions. Identifying all potential new uses of HI before launch will enable us to anticipate user requirements and provide the necessary data products and operations tools. We report on the progress of the observational schemes suggested so far and invite further suggestions in order to maximize the unique capabilities of the HI.