Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888
NGC 6888 - Crescent Nebula, ADBjester
NGC 6888 - Crescent Nebula
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NGC 6888 - Crescent Nebula

NGC 6888 - Crescent Nebula, ADBjester
NGC 6888 - Crescent Nebula
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NGC 6888 - Crescent Nebula

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Description

My third attempt at this object this month, a series of "first light" images on the EdgeHD 9.25 optics.

The first image (very first light for the 9.25) was 37 x 300s but was ruined by a filter wheel error. It was a one-shot color, but shot through the red filter instead of the clear: http://astrob.in/full/43073/

The second attempt was through the correct filters with 32 x 300s integration, but was poorly framed: http://astrob.in/full/43074/

Finally, I achieved success in this third attempt. 30 x 450s exposures in one-shot-color under a new moon without any filters. Aside from the guiding errors (elongated stars, caused, I think, by the seeing conditions), I'm pleased enough with this to move on to a new target now. Later, when I get H-alpha filters, I'll be back to get more nebulosity to add to it.

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NGC 6888 - Crescent Nebula, ADBjester