green
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by luciaderrico
what is it? I do not understand. It looks like a green bucket, help me to understand. thank you
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by zoob1172
imaging device artifact http://skyserver.sdss.org/dr9/en/tools/chart/navi.asp?ra=207.20876413&dec=27.95001051
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by Budgieye moderator
Images were taken at different times, then attached together.
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by zorrobis
sono un appassionato di astronomia, ma non capisco come ci possa essere un'emissione verde da un oggetto rosso, penso sia solo una sovrapposizione fotografica
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by ElisabethB moderator
The red object is a foreground star from our galaxy. The red color, the spikes and the green 'glow' are all optical artifacts.
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