  Imaging Atmosphere Cherenkov Telescopes (IACT) are arrays of very large
optical telescopes that are well-suited for rapid photometry of bright sources.
I investigate their potential in observing stellar occultations by small
objects in the outer Solar System, Transjovian Objects (TJOs). These
occultations cast diffraction patterns on the Earth. Current IACT arrays are
capable of detecting objects smaller than 100 metres in radius in the Kuiper
Belt and 1 km radius out to 5000 AU. The future Cherenkov Telescope Array (CTA)
will have even greater capabilities. Because the arrays include several
telescopes, they can potentially measure the speeds of TJOs without
degeneracies, and the sizes of the TJOs and background stars. I estimate the
achievable precision using a Fisher matrix analysis. With CTA, the precisions
of these parameter estimations will be as good as a few percent. I consider how
often detectable occultations occur by members of different TJO populations,
including Centaurs, Kuiper Belt Objects (KBOs), Oort cloud objects, and
satellites and Trojans of Uranus and Neptune. The great sensitivity of IACT
arrays means that they likely detect KBO occultations once every O(10) hours
when looking near the ecliptic. IACTs can also set useful limits on many other
TJO populations.
