Ngc 4945

[Escortitis]

Hi all,

Spent some time sorting focus and tracking, sorting some issues with guide cam. Really bad night in Perth tonight, high cloud and back end of a cold front but got some workable frames.

Went for something different in this one just because, different for me anyway, my first NGC.

16 x 4mins calibrated in DSS. Might try Iris when time permits

I like the target and would like to give it a go in better conditions.

Enjoy,

George.

Just saw Gary's, I guess I will try again!

[iceman (Mike)]

There's a lot of detail in the galaxy itself, nice job.

Are you using darks and flats?
The background is pretty messy..

[Escortitis]

Thanks Mike. I'm using flat lights, flat darks and darks. For whatever reason I have to over stretch the image to get any detail out of it, that in turn is killing the background. That's when I process in DSS anyway.

I did the same set of data in Iris and have improved the result, especially the background. I think the difference all happens during the asinh stretch command in Iris, I don't understand what that command does, but when you play with the values (alpha & intensity) of that stretch it makes all the difference. I have yet to find something in DSS to have the same effect.

Thanks again

George

[EzyStyles (Eric)]

Hi george, not bad. what iso and scope did you use? huge improvement with the second pic.

[Escortitis]

Hey Eric, thanks. Using my 12" lightbucket (aka light-bridge) and took 4min subs at 800iso. Too much light pollution for 1600 unfortunately. Not using any filters as yet, one of those LPS-P2 that you use might be the go, then I could go to 1600. Then a MPCC so I can use the whole frame! Might have to plant a money tree me think

George