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Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 1:39 pm
by carastro
This is "sort of" a reprocess from November 2018, except I didn't use the full frame at that time, so this is the first full frame process. I think I cropped it because I wasn't happy with the corner stars, and wasn't all that pleased with my processing of the outer nebulosity, so decided to give it another "go".

Ha 12 x 600
Oiii 7 x 300 binned
RGB stars R x 3, B x 4, G x 4 (all 150secs binned)

Atik460EX & WOZS71 + FR x 0.8 HEQ5

Image

Re: Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 2:27 pm
by AstroChris
Wow!
Whatever bothered you back then: this time it worked. This image is worth every hour of processing! You did a great job with that! All those tiny star freckles and that nebula on fire... Great image! Good, you do choose to reprocess it!
Greetings
Chris

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Re: Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 2:41 pm
by carastro
Thank you Chris.

Carole

Re: Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 5:56 pm
by bengourben
Beautiful. Love the way it stands out from the background. [emoji318][emoji106]

Jason

Re: Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 7:07 pm
by carastro
Thanks Jason.

Carole

Re: Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 10:53 pm
by smerral
:mexwave: :mexwave:

Re: Crescent nebula NGC6888

PostPosted: Tue Dec 24, 2019 10:58 pm
by carastro
Thanks Brian.

Carole

Re: Crescent nebula NGC6888

PostPosted: Thu Dec 26, 2019 10:45 am
by Pat mcevoy
Stunningly sharp Great colour
And love the Bubble
Merry Christmas [emoji319]


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Re: Crescent nebula NGC6888

PostPosted: Thu Dec 26, 2019 7:11 pm
by rwillits
Very nice image Carole. I have the same image ( NB ) in my computer, which is only stacked. You are inspiring me to finish it. I wish that I had your "stay with it and finish it attitude".

When you do the RGB for the stars, do you bother with Bias, Darks, and Flats for these images.

Re: Crescent nebula NGC6888

PostPosted: Fri Dec 27, 2019 1:00 pm
by carastro
Thanks Richard.

When you do the RGB for the stars, do you bother with Bias, Darks, and Flats for these images.

Actually I do, and probably don't need to - that's a good point - but I guess it's because I am usually doing more than one target with the same rig, and I take Flats in all the filters while I am at it just in case I need them for a different target. So since they are taken I just tend to use them.

Carole