Crescent nebula NGC6888 bicolour

[Carole]

I took the Ha from home but the Oiii was awful in Bromley, so I took the Oiii at Kelling

Atik314L & Skywatcher ED120 on NEQ6
Captured in artemis, stacked in AA and processed in Registar and Photoshop

10 x 1200 secs Ha (taken from Bromley SE London)
7 x 1200 secs Oiii Kelling Heath Norfolk

I think this needs a lot more data, but that will have to come in due course given the opportunities. 

[RobertM]

There's a lot of really good OIII data there Carole but as you say it needs a lot more Ha to give a good balance (which should also make it easier to process too).  I'm really looking forward to seeing the result once that balance is better, it should look really stunning.

Robert

[Carole]

Thanks Robert.  Do you think it would benefit from adding RGB to Ha and Oiii?

Carole

[MarkS]

Very nice.

As Robert says, the OIII data is much better than the Ha.  If you can get some Ha from a dark site then it will make a big difference.

That Atik 314L is serving you very well.

Mark

[Carole]

If you can get some Ha from a dark site then it will make a big difference.

Yes I agree, next opportunity.

Carole

[Fay]

The OIII is looking very good Carole

[Carole]

Thanks Fay.

Carole

[Carole]

Think this is better colour:

[MarkS]

Yes, better colour balance and you've brought out a lot more of the fainter detail.  Also a large circular shadow 2/3 up on left of the Crescent?

Mark

[Carole]

Also a large circular shadow 2/3 up on left of the Crescent?

Yes, shows up more on here, it's a very stubborn dark bit of dirt on the sensor that flats don't seem to remove.  I spoke to Vince at Atik about it when I was at Kelling and he said if I post the camera to them they will clean it for me. 

I also forgot to crop the edge off the image duh!

Carole

[Carole]

Edge cropped out and dark blob mostly processed out, horrible dark rings around stars got rid of.
Hopefully last revision.