martedì 10 giugno 2008

M 57#1



Ring Nebula (M 57). Distance about 2000 light-years.
Telescope Sky-Watcher Newton phi=130mm f=900mm, eyepiece Sky-Watcher plossl 25mm.
Mean of 15 exposures of 8s with RegiStax V4, digital camera Samsung S730, 1000ISO, f=12mm, phi=f/3.9.
Taken on june 10th, 2008, 0.05(UTC+2) - 0.13(UTC+2).
Place: Rubiera(RE,IT), E.U.

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