Rosette Nebula Narrowband

[Carole]

As stated in my other thread in "technical" I am having a problem with my Atik383L camera which is giving shutter shadow on about 40% of my images and I am planning to get this attended to.

Undeterred I decided to stack all the images regardless and then did a separate stack of those without the shutter problem and combined the two images so that 95% of the nebula is of the greater number of subs, so ignoring the top left corner the majority of the image contains the following:

Ha 12 x 600secs 7nm
Oiii 9 x 600secs
Sii 5 x 600secs (Had to stop then because object passed behind a tree)
All Baader filters

WOZS71 Zenithstar APO
NEQ6 with EQMod (I am loving it now)

Stacked in Astroart, processed in Registar and Photoshop CS3

Also having a bit of a problem with PCs which I won't bore you with now, but I can't yet get photoshop onto my new W7 desktop and so I am having to process on my old one for the time being - it's quite surprising the difference in the monitors - what looks fine on my old Monitor looks far too bright on my new one, so Goodness knows what I have been posting in the past!!

So I hope this looks OK.  

Hoping to add to the data at some point - given the opportunity and my Camera back from repair.

Also, not all that keen on Hubble colours, so will be experimenting a bit - watch this space.  



Carole

[MarkS]

Wow!  That looks really good.  Was it all shot from home?

I actually really like the Hubble colours and the Rosette is a great example of it.

That's an excellent narrowband image.  The processsing looks great. Well done.

Mark

[Carole]

Thanks Mark, yes all from the back garden in Bromley.

Carole

[Carole]

This is my pretty bicolour version.

[Fay]

That looks really good Carole!!! i like them both

Fay

[Carole]

Thanks Fay.  I'm going with the flow on Hubble palette but really not keen, I guess it shows more detail. 

Carole

[Carole]

Further to feedback on other forums, and seeing some other people's results, I decided to also do a bicolour version.  This is the fun with narrowband, you can get so many different results.  I now prefer this to my pink version.

This is mapped Ha, Oiii, Oiii

[JohnP]

Carole - Like the third one best - I have never liked traditional hubble always too 'yellowy/ greeny' in my opinion. Much prefer the red/ blue image looks more natural. Also nice to see it LARGE size. Looks like you have a few artifacts down RHS that could do with a crop. Good for Bromley though.

John

[Carole]

Thanks John,

Yes I agree about the Hubble palette have always fought it, but lately decided I needed to "go with the flow", but like you I much prefer the Red/blue version and once I get more experienced with NB will be trying to do more of this.  Trouble is I don;t normally get much data in anything but Ha from Bromley, one of the reasons I picked Rosette. 

Can't see the artifacts you are referring to though. If possible would like to see what you mean, is it something I have done in the processing, I deliberately left the nebulosity on the right hand side. 

Carole

[JohnP]

Just on the far right hand side at top there are some vertical lines that go about 1/2 way down image (probably where frames have over-lapped)... Just a few mm from edge. John

[Mike]

That's really nice Carole. Especially the third image. Nice colour balance.

[Carole]

Thanks Mike.

Ah John, thanks for that.  I think actually it is some trails that I missed, had quite a few to process out.  Sigma stacking is supposed to get rid of them but never works for me.

Thanks

Carole