Sunday, 12 November 2017

The Bubble Nebula NGC 7635


Object: NGC 7635 (Caldwell 11)
Type: Emission Nebula
Distance: 7100 light years 
Constellation: Cassiopeia
Date: 5&6 November 2017
Equipment: SXV-H9, Vixen 114mm f5.3 ED refractor, guiding with Lodestar X2/PHD
Subframes: 42 x 300s H-alpha as luminance, 12 x 75s 2x2 binned each for RGB

Images acquired, pre-processed and stacked in Astroart.  Digital development and high/low pass filters applied, colour composited all in Astroart.  Final cosmetic processing (cropping, mild edge preserving smooth for noise) in PaintShop Pro.

More information about this object can be found here...

A faint trace of nebulosity around the bright star inside the Bubble can just be seen with the ED114 and a 25mm eyepiece. Larger aperture scopes don't really reveal any more details, at least not to me.

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