Cocoon Nebula HaLRGB from DSC

[Carole]

Taken on Friday night from Cairds:

Two imaging cameras and scopes HEQ5
A: WOZS71 + FR x 0.8/ Atik314L
B: SW ED80 + FR x 0.8/ Atik460

A: 11 x 600 Lum, 5 x 600 Red, 3 x 600 Blue, 3 x 600 Green
B: 16 x 600 secs Ha
Total imaging time 6 hours 20 mins

That WO Scope is a so and so for giving blue halos, very difficult to deal with during the processing.  I am not alone with this problem, there are threads about it.

[Ivor]

You've captured some detail in nebula as well as keeping the star colour, great result.

[Carole]

Thanks Ivor.

Carole

[Fay]

well you did not waste any time, while you were there Carole. lots of images to show for it

[Carole]

Thanks Fay, yes I like to make maximum use of the darks skies when I am there. 

Carole

[JohnP]

Halo's are a right pita..... I remember exact same issues when I imaged this down at ollies place about 7 or 8 years ago..& that was with ZS66.. I guess that's why people spend a lot of money on scopes...

Nice image though & the dark lane is showing nicely.

John

[Carole]

I agree John, but I don't seem to get it with the Skywatcher scopes. 

I have just had a thought -  I might swap the Filter wheels over so I am using the Skywatcher for the colour and the WO for the Ha/Oiii and luminance filter I just bought this morning.  Maybe that might eliminate the blue halo problem.  All trial and error.

Nice image though & the dark lane is showing nicely.

Thanks John. 

Carole

[RobertM]

You've been busy Carole, I'm glad there were some clear skies at DSC.

A very nice image though I'd say that the stars look all the same colour (not that it's necessarily wrong).

Robert

[The Thing]

You are prolific Carole, give you a dark sky and a whole menagerie of objects get captured! Nice image, it really looks prominent on my screen.

[Carole]

Thanks Robert and Duncan. 

I agree about the stars Robert the only ones that are different are those with the halos around them.  Well all I can do is put them together and this is what comes out.  I did tone the colour intensity down a bit as they were much more yellow and the halos were brighter, but that's all I did.

Carole

[MarkS]

That's looking really good Carole.  I wonder if it would be possible to see the brown dust if you adjust the black level a bit? 

The nebula itself needs a bit more blue I think - I wonder if you can enhance the blue in the nebula without increasing the blue haloes of the stars? 

Mark

[Carole]

Thanks Mark.

I wonder if it would be possible to see the brown dust if you adjust the black level a bit? 

I did try but nothing doing.

I have since seen another cocoon where the poster did 900sec subs in luminance and this was starting to show up the dust, so might give that a try next time.  Also see my comments above about swapping the filter wheels.

You are prolific Carole, give you a dark sky and a whole menagerie of objects get captured!

Carole