Observations of the Perseids 2007 with SPOSH cameras

Details Observations of the Perseids 2007 with SPOSH cameras Observations of the Perseids 2007 with SPOSH cameras

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..702o&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

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Scientific paper

A large number of Perseid meteors were captured during a 2007 campaign carried out in Germany and Austria using SPOSH (Smart Panoramic Optical Sensor Head) cameras. The SPOSH camera (developed at DLR and Jena Optronik under contract to ESA/ESTEC) has a custom-made optical system with a field of view of 120 x 120° (170° x 170° over the image diagonal) and features a back-illuminated 1024 x 1024 CCD, which warrants high sensitivity as well as high geometric and photometric accuracy. Images are taken at a rate of one every two seconds. While currently 4 SPOSH cameras are available, two of the cameras are equipped with rotating shutters for meteor speed information. The 4 SPOSH cameras were deployed at locations at Neustrelitz and Liebenhof (near Berlin, Germany), as well as Gahberg and Kanzelhöhe (Austria). Two more commercial cameras (Canon EOS) at separate locations were included in our campaign to warrant multiple observations of the meteors in the case of bad weather. Images were taken during the nights from August 10- 14, with excellent viewing conditions during the night of the Perseid maximum, Aug 12/13 at all stations. Following the campaign, geometric calibrations of the images and comprehensive searches for meteors in the data were carried out. We recorded more than 3300 meteors, among which there were 400 double station observations. During the peak of the shower, 180 meteors were recorded within 30 minutes from Kanzelhöhe (the Observatory at an altitude of 1500 m had extremely clear sky) alone. Hence, we have an unusually large data set, which includes meteors as faint as m=+6, as we estimate. Besides Perseids, a number of sporadic meteors and members of other showers were identified. A full trajectory analysis has been performed for a good number of meteors so far, with most data still awaiting further analysis. This poster presentation will give a full account on the scientific results of the campaign. Furthermore we will report lessons learned from the handling of the 2007 campaign, which includes modified instrumentation and an optimized set-up procedure for the stations as well as streamlined processing and computer-aided meteor detection in images. The campaign was carried out involving students and trainees from the Technical University Berlin and enjoyed funding support from EuroPlanet.

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