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Space Science

28-Megapixel Camera to Monitor the Night Sky 8

Posted by Hemos
from the tyger-tyger-burning-bright dept.
StupendousMan writes "Scientists at Sonneberg Observatory in Germany will start monitoring the sky every clear night (starting in October), using a curious combination: a 28-Megapixel CCD camera behind a 30-mm f/3.5 fisheye lens. As the first light test images show, the device can record nearly the full sky down to ninth magnitude (about 20 times fainter than the naked eye limit) every 5 minutes. The goal is to create a permanent record of bright objects, which could be used to discover comets and novae."
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28-Megapixel Camera to Monitor the Night Sky

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  • The specs say 7k * 4k pixels, but the JPEG files don't go anywhere near that. Also, they talk about the pixels being binned 4*4. So... what's the real resolution?

    --Mike--

    • Binning 4*4 makes the res 1750*1000, 1.75Mpixels. Binning or combining the values of a group of elements in a CCD array is used to increase the light sensitivity of the CCD. That's how they got that much from such a short exposure. Typically to get the kind of results that they showed, you need at least a 30 minute exposure.

    • Also, don't forget that for astronomy purposes, FITS is pretty much the standard file format. Images were converted to JPEG for the average web-surfer's convienience...

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