NGC6888 - Crescent Nebula - 5 Hours

[johnb]

So this is 5 hours of 300 Second exposures taken over 2 nights. Kit is in my signature.

Its ok but I had hoped 5 hours would have revealed a little more nebulosity ?,

it may be that my processing skills are simply poor and there is loads of data waiting to be teased out, or will I simply need more data ?

Thanks for looking

Regards

John B

[nmoushon]

I think its limiting because of your location and LP. What ISO did you use? If it was 400 then try 800 but if you were at 800 I would go back to that its your LP because I wouldn't go higher than 800 if I were you. But there's a good amount of data there and looks good.

[Gina]

Yes, I think there's quite a lot of detail in there ready to be brought out by careful processing

[johnb]

Thanks, ISO 800 - I will try processing more to see if I can get more data out - you never know.

John B

[johnb]

Think this is a bit better ?

John B

[SJJ]

John, did you use any flats? That would assist your processing. Also i find GradientXterminator a real help with LP.

[Moonshane]

saw this visually last night and the brighter section was quite readily seen. at a dark site I can see the whole of the 'C'. nice image.

[farunj]

That's pretty nice!! Like it!!

[davew]

I'm with SJJ. Flats would be my next thought on this. It's hard to tell what's a gradient without them.

Some nice star colour showing and a very quiet background.

Dave.

[r3i]

It's a nice image. If you can somehow get rid of the gradient, so much the better.

To get any more detail on this object (i.e. all the internal filaments that make it look like a 'brain'), I think folks have added narrowband data into the mix.

[johnb]

thanks for all the kind comments - I have improved my processing and will post in a moment in a new thread.

John B