Wycombe Astronomical Society - Image Gallery :: Nebulae

M27, Dumbell Nebula using Ha and OIII narrow band filters
2010-07-10
Chris Rowland

Description

NexStar 11 GPS, f/6.3, Atik 383L+, 20x2mins Ha, 15x2mins OIII, Processed in Iris with Ha as red, OIII as green and blue and Ha + OIII sharpened as luminance.

From:	Wycombe Astronomical Society Members	(Wed 21 Jul 2010 02:55:26 AM CDT)
Good shot Chris and interesting approach to colour mapping. By your selection of short exp time and slightly eggy stars, I guess it's unguided? Bring on that autoguider! Alistair
From:	Wycombe Astronomical Society Members	(Wed 21 Jul 2010 05:06:02 PM CDT)
Thanks Alistair. I'm afraid it's guided, sorting out the guiding is one of the things I need to do next. Chris