Skip to main content


Due to the New England winter storm currently affecting the area, phone coverage at the AAVSO may be much reduced until Wednesday. The staff is still available via email, and we suggest using that method to contact us if you need assistance.


Observing Exoplanet Transits with Digital SLR Cameras

pdf    ps

Colin Littlefield

Department of Physics, University of Notre Dame, Notre Dame, IN 46556

Using a digital single lens reflex (DSLR) camera, I observed a transit of exoplanet HD 189733 in order to determine the feasibility of using these types
of cameras for high-precision photometry. The results were scientificaly useful, showing that even though the camera is not explicitly designed for scientific applications, it can nevertheless produce high-quality differential photometry.

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484