NGC 7331 Work in progress...

[Avdhoeven]

Currently I'm gathering data of NGC 7331. I want to get a nice image of this galaxy using my C11. Until now I gathered 34x10 minutes of data with a SXV-H9 and a Baader UHC-S filter.

I had to stretch the image quite a lot to show the details in the galaxy. Because of this the stars get large halo's.

Is there anyone who can give me the ultimate hint how to get out the faint details without blowing up the stars too much?

[West End Wendy]

Sorry I can't help as I'm no imager, but I just wanted to say that halos or no halos that's still a fantastic image and has really inspired me to track down that galaxy.

I had never heard of it until it was mentioned on S@N this month.

Tim

[MartinB]

That is a wonderful image with excellent resolution. Superb work with the C11. What was the thinking behind the UHC filter? Deconvolution can help keep the stars tight. The halos look filter induced. There are some fairly agricultural techniques you could use but I think it is fine as it is

[SlipperySquid]

Amazing detail coming through there! There are a few techniques as Martin has already pointed out. There quick fix here that OllyPenrice posted which you could give a go?

http://stargazerslounge.com/imaging-image-processing-help-techniques/150854-how-reduce-haloes.html

Great work on the image. I'm mesmerized by it!

Clear skies

Matt.

[James]

Wow - haven't seen that object quite so close in before! Nice image.

Unfortunately I'm not really sure what to do about your halo's

James

[JCJC]

Woooo, that resolution is so good!! Looks great, keep going!

Star wise, you could try JPM star remover action, then process the galaxy and then do a star layer, blend it back in, try screen mode for the blending I think: Astro Anarchy: Star Removal PS action, klick the image to download

Thanks,

Jordan

[MartinB]

If you use any sort of halo removal action you will need to apply a feathered blur to the edge of the halo before hand. Filter halos have a sharp edge and you can end up with all sorts of nastiness if you aren't careful!

[MikeD]

Fantastic result, love the clean detail you have achieved.

re the stars, I just let them grow.

Mike.

[Avdhoeven]

Thank you all very much for your nice remarks! I will continue with this object and post the result when I have more data ......

[Daniel-K]

try using a high pass filter in PS thats what i do

[NickK]

Beautiful start.. I'm really looking forward to the next shots!

The detail is superb.