Data Mining the MMT All-Sky Camera

Details Data Mining the MMT All-Sky Camera Data Mining the MMT All-Sky Camera

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..394..385s&link_type=abstract

Astronomical Data Analysis Software and Systems ASP Conference Series, Vol. 394, Proceedings of the conference held 23-26 Septem

Astronomy and Astrophysics

Astronomy

Scientific paper

An all-sky camera system has been in continuous operation at the MMT Observatory since March 2005. While the system was relatively inexpensive to build (under 3,500), it has proven to be very robust and an invaluable tool for MMT staff and observers. It records images every 8.5 seconds, yet is still sensitive enough to detect stars down to a visual magnitude of about 6 over a 160° field of view.
In this paper we describe in detail how the data from this system are acquired, analyzed, and archived. The high sensitivity and relatively fast refresh rate of this system makes it very well-suited to detecting transient events. The short exposure time (8.53 sec) allows first difference frames to be created with minimal residual sidereal shift. We discuss the algorithms used to analyze difference images from this system to detect various kinds of tranisent events.

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