5 August 2010 DEMONEX: the DEdicated MONitor of EXotransits
Author Affiliations +
The DEdicated MONitor of EXotransits (DEMONEX) is a low-cost, 0.5 meter, robotic telescope assembled mostly from commercially-available parts. The primary goal of DEMONEX is to monitor bright stars hosting transiting planets in order to provide a homogeneous data set of precise relative photometry for all transiting systems visible from its location at Winer Observatory in Sonoita, Arizona. This photometry will be used to refine the planetary parameters, search for additional planets via transit timing variations, place limits on the emission of the planet from secondary eclipses, and search for additional transiting planets in some systems. Despite its modest size, DEMONEX achieves a signal-to-noise ratio per transit that is comparable to that obtained with larger, 1m-class telescopes, because of its short readout time and high z-band quantum efficiency. However, the main advantage of DEMONEX is that it can be used every night for transit follow-up. With the 39 known transiting planets visible from Winer Observatory, over 90% of all nights have at least one full event to observe. We describe the hardware, and the scheduling, observing, and data reduction software, and we present some results from the first two years of operation. Synoptic surveys coming online will undoubtedly uncover a plethora of variable objects which will require inexpensive, robotic, dedicated telescopes to adequately characterize. The outline followed and lessons learned from this project will be broadly applicable for constructing such facilities.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jason Eastman, B. Scott Gaudi, Rob Siverd, Mark Trueblood, Pat Trueblood, "DEMONEX: the DEdicated MONitor of EXotransits", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77333J (5 August 2010); doi: 10.1117/12.857446; https://doi.org/10.1117/12.857446


ExTrA: Exoplanets in transit and their atmospheres
Proceedings of SPIE (September 11 2015)
NGTS a robotic transit survey to detect Neptune and...
Proceedings of SPIE (September 17 2012)
First photometric properties of Dome C, Antarctica
Proceedings of SPIE (July 17 2008)
The REM telescope: a robotic multiwavelength facility
Proceedings of SPIE (September 30 2004)

Back to Top