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Nova in M 31 ( Andromeda ) Estimated mag. 18 Exposure time : 2 X 10 minutes 0.61m f/3.2 MX5_16 CCD Date : 8. September 1999 Time : 23.50 UT. Weather : Excellent Image processing : Darks, Trondals Flat.drk, Linear Stretch, Power Law Stretch, Linear Stretch and at last Unsharp Masking. |
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