Help with Image

[Rezn8]

Hi, could anyone tell me what causes the bright area in the middle around the galaxy please >?

[earth titan]

Not sure what you're referring to, as there isn't a reference picture attached, but I'm guessing you mean the core? This is a more densely packed group of stars than in the rest of the galaxy.

Difficult to do much about although you can mask the core while stretching in Photoshop or mix images.

If you post an example, that will help.

Typed by me on my fone, using fumms... Excuse eny speling errurs.

[Velvet]

Cores are very difficult to process and get the detail out of the others areas without blowing the core into a bright blob.

As above you could try a mask in photoshop but i find it extremely difficult to do so would be interested in an expert

opinion as it would help me too

Velvet

[Rezn8]

Sorry, here is image..

[Rezn8]

It looks like sky glow, but why just in the middle of photo and not on edges ?

[montezuma110]

I have had a similar problem, did you use flat frames when you stacked it?

If not I suspect it is the vignetting of the scope and camera.

If you re-stacked the image with flat frames it should hopefully improve.

Here is some info on flat frames on DSS FAQ, http://deepskystacker.free.fr/english/index.html

Hope this helps.

[VigdisVZ]

Yep I think flats would help there.

Nice image by the way.

[earth titan]

Flats will help.

Good detail in there as well.

Typed by me on my fone, using fumms... Excuse eny speling errurs.

[Rezn8]

Really, I thought the image was not so good. Shot it under the full moon with a LPR. Didnt use flats, and have just found out that my DSLR has to be further away from the 8" Edge when shooting. It needs to be 133mm away, and was sitting at only about 70mm. Could this have caused the vignetting ?

[Cloudwatcher]

If you use Photoshop try the Gamma Correction and Offset tools in Exposure..............this should solve the problem but you may loose a few of the dimmer stars.

[Rezn8]

Thanks, looks like great filters to use.