Dust from Comet 9P/Tempel 1 seen with the ESA OGS (red filter)
Dust and gas are seen in these images of Comet 9P/Tempel 1, as observed with the 1-metre ESA Optical Ground Station (OGS) telescope, located at the Observatorio del Teide on Tenerife, Canary Islands.
Two different filters have been used in different visible light observations to study different aspects of the comet’s nature. Red ’broadband’ filters allowed the detection of dust, while blue ’narrowband’ filters, filtering only carbon gaseous compounds, allow the observations to concentrate mainly on the gas emissions of the comet.
The first set of images (above) here were taken with a broadband red filter, four days before and about 15 hours after the impact respectively. The images were exposed for 10 minutes and show the dust coma of the comet. The dust brightness has increased by 50 percent.
Rita Schulz | EurekAlert!
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