Ngc 6744

[phobos27 (Nick)]

Originally Posted by Tony_

Much better! The galaxy itself looks much better, although your stacked image looks very dark compared to the sub? The histogram is too far to the left which makes the background too dark and the stars too bright. I don't know what is wrong - but I suspect there is still something not quite right happening in DSS.

It's not a particularly easy galaxy to image. The nucleus is fairly bright but the arms are fairly faint - especially the finer detail.

Regards,
Tony.

Thanks Tony! The Sub is always darker like Kevin said. So hopefully that is the problem. I am happy with the result I have gotten so I will just leave it!

Originally Posted by cometcatcher

DSS does the same thing to me - the stack is much darker than an individual sub. There is an adjustment for that also, but in the end it doesn't make much difference to the image when stretched so I just leave it.

Thank you both for all your help and for staying with me. It has been an experience to say the least. Might try this again in the future and we will see what we get then!

Regards
Nick

[Tony_ (Tony)]

My first 6744 looked a lot worse than this. My more recent one was better - but no-where near enough exposure time.
Did you use flats for this image? When I started I never used flats - I just processed out the vignetting, but flats make a huge difference. It will give a much more even background and will enable you to bring out more detail.

My images are still quite humble compared to the ones posted here - but I still enjoy it as long as the image resembles the object without too much noise and horrible stars.

[phobos27 (Nick)]

Originally Posted by Tony_

My first 6744 looked a lot worse than this. My more recent one was better - but no-where near enough exposure time.
Did you use flats for this image? When I started I never used flats - I just processed out the vignetting, but flats make a huge difference. It will give a much more even background and will enable you to bring out more detail.

My images are still quite humble compared to the ones posted here - but I still enjoy it as long as the image resembles the object without too much noise and horrible stars.

Thanks Tony. I only took light frames for this photo because I forgot to do anything else. I have actually never tried taking flat or bias frames, only dark because I do not know how to take them. Might try this again next time.

Nick