Iris Nebula NGC 7023

[HunterHarling]

Hi all,

This is my first stacked image of the Iris Nebula that I have taken. I'm surprised by the amount of processing it took, definitely one of the hardest I've done.

 FSQ106 EDXIV

ASI1600mm PRO

L: 22x300s

R: 22x300s

G: 22x300s

B: 22x300s

Total=7.3 hours

To show how much it has changed in processing, here is my RGB  channel at the beginning of processing:

My processing workflow:

#1 DBE several times on each channel

#2 Color combination, color calibration

#3 Noise reduction on both L and RGB using this method

#4 Deconvolution on L

#5 Histogram transformation + Arcsinh stretch

#6 Star reduction and mask processing for the background

#7 LRGB combination

#8 Multiple curves transformations

#9 Re-sample and crop

I may be adding more data as this is only 7.3 hours.

 

Processing comments/questions always appreciated🙃

Thanks for looking

 

[alan potts]

A really nice image, I like the Only 7.3hrs, that's more time than I spent the last 3 nights, last night we had a lightning show, massive storm.

Alan

[MarsG76]

love the image.. very smooth...

 

[Gina]

Lovely!

[Kaliska]

Great image! Can you share your ASI1600 settings (gain/offset) as this target is on my to-do list for this year?

[HunterHarling]

Thanks everyone. 

9 hours ago, alan potts said:

A really nice image, I like the Only 7.3hrs, that's more time than I spent the last 3 nights, last night we had a lightning show, massive storm.

Alan

The weather here has been pretty good, but it's going to be cloudy for a few days...

 

4 hours ago, Kaliska said:

Great image! Can you share your ASI1600 settings (gain/offset) as this target is on my to-do list for this year?

I'll have to check, I believe it is gain 10 and standard offset. Also, I once did a comparison between different gains, and there was no difference in the image.