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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