The Pelican Nebula

[SimonfromSussex]

I'm still trying to get to grips with a mono ccd. Lots to learn!

This is the pelican nebula ic 5070 through my Ed80 & 0.63 reducer taken with atik 314L.

x18 10 min subs ha filter unbinned for the lum channel.

x6 3 min subs each R/B/G binned 2x2.

Stacked in maxim DL 5, finished in photoshop:

Any help/advice always greatly received!

[Gina]

Great first attempt - very nice

[davew]

There seems to be at least two differing schools on Luminance. One says use Ha as L and the other says use all the spectrum as an L (Whether that's a true L through an L filter or combining the RGB ) and add the Ha to the red channel. There are probably more !

I feel that using Ha as an L only sharpens up some of the red. Others may disagree. Have you tried using the Ha in the red channel yet ?

It's a great start seeing the sky is so bright at the moment !

Dave.

Any chance of a look at your Ha ?

[Quatermass]

Looking good my this pelican it is a big one will have to have a try at it some time.

[SimonfromSussex]

Many thanks for the replies.

Dave, I did try using the ha data for the red channel but it gave me quite a washed out image, I might well try an ha/red blend though.

Here is just the ha data stacked and just given a little stretch:

[davew]

^{My post was confusing. I meant blend in the Ha to the red channel.}

^{That Ha image looks good enough to me. Nice definition in the clouds and the stars are under control.}

^{What weight of Ha blend works best for you is going to be trial and error. I suggest ( I do a lot of that with other people's time ) is to blend in 25%, then 50% and finally 75%. Get all three up on the screen and then you can make a judgement how to blend the final image.}

^Dave

[SimonfromSussex]

Ah, ok Dave, cheers.

I will have a play with the data and let you know how I get on!

Simon.