Complex sentence: Bigelow (both in the Tucson, AZ area) and a 0.5 meter (20 inch) f/3 Uppsala Schmidt telescope at Siding Spring Observatory in Australia.
Split into simpler sentences: Bigelow (both in the Tucson, AZ area). A 0.5 meter (20 inch) f/3 Uppsala Schmidt telescope was also used at Siding Spring Observatory in Australia.