NGC 6992 Help in processing

[Pluto]

HI all i took an image of NGC 6992 a few nights ago, but my skills at processing are very poor,

i wonder if someone with spare time would have a go at this and post it back so i know if the image is any good or not or where i have gone wrong.

i have stacked the image in DSS using Light,bios and dark frames i didn't have time to do flats

the image is 35.1mb in size thanks.

Here is the link

http://ukastronomers.com/Pluto/action/download_files/fileid/56

[Reggie]

Hi Pluto, I had a go at it for you, can't seem to pull much out, mainly because there's a circular 'something' in the middle of the image, it looks like it needs some flats to really sort it out, otherwise it really shows when you use levels/curves, I'd be really interested to know what causes that in an image, is it severe vignetting, or a small amount of dew on the objective? this is the best I've managed for you:

http://i246.photobucket.com/albums/gg85/SkyAndStuff/NGC_6992b.jpg

If you look closely at the centre you can see what I'm talking about but I'm guessing you've already seen it when you had a go at post processing it.

Thanks for the rings btw.

[Pluto]

Thanks Reggie i don't know what that circular in the middle is but its on all images i have taken,

i am going to do some flats to see if they sort it out.

As for processing goes i need a book or something any suggestion?

thanks again.

Rings OK have they done the job or not?

[Reggie]

Micheal Covington does a very nice dslr astrophotography book, I'd also have a look at imaging tutorials on the astronomy forums.

As for the rail and rings, the rail was about 5mm short for some reason, no ones fault, so I made a little bracket and got to use them properly for the first time on friday and saturday night

http://stargazerslounge.com/index.php/topic,31685.0.html