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Old 23-06-2012, 09:08 AM
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Lester
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Join Date: Jan 2006
Location: E.P. S.A.
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Emerald (planetary nebula)

Hi all, this is a very small object, but as it had a designated name I had to have a go at it and see why. It is only 0.3' in diameter, and although mag 8.1, I could only manage exposures of 5 seconds as longer overexposed the internal colour. It is in the constellation of Ophiuchus.

This is 27 exposures with 14" SCT at F10 and Astro 40D at ISO 800.
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