Astronomy and Astrophysics – Astronomy
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sass...24...11k&link_type=abstract
The Society for Astronomical Sciences 24th Annual Symposium on Telescope Science, held May 24-26, 2005. Published by Society for
Astronomy and Astrophysics
Astronomy
Scientific paper
A fireball (or bolide) is another name for a very bright meteor due to atmospheric entry of space debris, both natural and man-made. This paper will discuss the technology, methods and results from an All-Sky video camera and custom electronics to record fireball events that occur over Northern California. Images and links to videos will also be presented. The data was captured with Sandia Fireball Network cameras. These systems are operated by the Sierra College Astronomy Dept. and a private observatory in Nevada City, CA. These cameras are automated system which operates from just before dusk to just after dawn. The systems are video cameras, which have a 180o field of view. There is a custom signal processor and memory system, called the Sentinel system, which buffers a few seconds of continuous sky video. The processor compares each video frame to the previous, and when it detects an event (fireball), a few seconds of video (before and after the event) are sent to a host UNIX system. Only data relevant to motion is downloaded to the computer. The system provides a method of recording and study for meteor shower activity. Second, all events captured by both cameras provide the potential to compute the pre-earth encounter orbit, but also to estimate the impact corridor of any meteorites the fireball might have produced. Our experience thus far shows that they occur about once a day and a very bright one every few weeks. The cameras began regular operation around mid-April 2004. To date, no fragments have been recovered from detected events.
Kenyon David A.
Watson W. T.
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