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NGC7635 Bubble nebula

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Here is my best effort at the bubble nebula in HaLRGB.


SW ED80 on NEQ6


Guided PHD2, ASI120MM

Capture SGP

RGB 20 x 120s each

L 20x 300s

H 20 x 600s 

Processing has been using Pixinsight. I am new to narrow band processing so my simple method was to create the LRGB and then apply the Ha master to that using LRGB Combination in PI. Not sure if that is how it should be done.

I have tried various routines to improve contrast and sharpen, but always seems to be at the expense of increasing noise. Also have star halos that are most obvious around red stars. If anyone has advice on how to deal with those it would be much appreciated. I am using the budget set of Baader LRGB filters - could they be the cause of the halos?



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Can't help with the processing in pixinsight I am lucky if I can get a mono image to come out OK using that. 

The image looks great on my phone. 

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Allan the Plumber

Any chance could you send me your data.

have a work through with Pixinsight and noise reduction. If you don’t mind would like to have a go 


The halos usual tend to happen with the Blue Badder filer. Think it may be a artifact or focus on the red filter.

Do you focus each filter on a run and again during the evening.?

 Still saying that looks really good and keep with Pixinsight it’s the best software for getting the data out of the image👍


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Thanks Graham and Alan. I am away at the moment but will post a link to the data at the weekend.

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