Crescent Nebula NGC6888

[david_taurus83]

Approx 9 hours each in Ha and Oiii in 15 minute subs last month. The seeing and transparency for the 2 nights of Ha was terrible along with a full moon so the stack was almost as noisy as the Oiii and the Ha stars were bigger than the Oiii! So I have done two versions. One with full stars and one with them removed and put back after processing the nebula. Not sure which one I prefer? Comment and criticism welcome. Processing done in Pixinsight.

Altair 80 EDR doublet, Atik 460, Astronomik Ha and Oiii 6nm filters.

 

[geeklee]

Great images @david_taurus83  Excellent detail within the Crescent and the OIII shell looks good too.

First one for me, looks more natural and I prefer the overall saturation (of crescent, background and stars)

Edited October 24, 2021 by geeklee

[teoria_del_big_bang]

What great images 🙂 

Steve

[astro mick]

Very Nice indeed.

Mick.

[Lee_P]

Both great images! If I had to choose, I'd go for the first one. It just looks a bit crisper. 

[david_taurus83]

2 hours ago, Lee_P said:

Both great images! If I had to choose, I'd go for the first one. It just looks a bit crisper. 

Thanks! The second one with reduced stars was my first attempt with a quick process just to see what sort of image I could get. The first image I took a bit more time and used deconvolution on a synthetic Lum (all Ha and Oiii stacked together) and also some sharpening towards the end. I wasn't completely happy with it as imo it's too noisy for the hours put in but the seeing was rubbish and a full moon to boot. The more I look at it on the forum the more it's grown on me so I think I'll call it done!