Ngc 6164 - updated less green and hubble

[rustigsmed (Russell)]

Hi all,

I battled the Melbourne wind last week and managed to cobble together an image.

Here is a bi colour of ngc 6164, only 10x 10 mins Ha and about 7x10mins Oiii. I was hoping to get a lot more (3x data) but many subs were ruined by the wind, it was an inefficient outing, having a 12" light bucket doesn't help when the wind is up.

I also took about an hour of S2 (new filter!) but there wasn't much signal there, I also learnt a lot about colour mapping nb over the w'end (more than simply throwing the mono image into the channels! I've got even more respect to the NB masters out there now).

I might go back and do a repro, I was concentrating more on mixing the channels and aligning (still need to buy registar) than my normal processing.

Also attached is a Ha monochrome.
It is a steep learning curve

https://www.flickr.com/photos/80336656@N07/17166875068/

edit: updated less green bicolour and added an extremely pushed hubble mix

Cheers

Russ

[cometcatcher (Kevin)]

You have some outer shell there!

[rustigsmed (Russell)]

Cheers Kevin, I was hoping for a little more outer shell to be honest but really I need a lot more data especially Oiii, its quite noisey - but wow is it dim!

[RickS (Rick)]

Yep, just a hint of the outer shell. It takes a lot of data or a very fast system to get more of it!

If you're doing a bi-colour I'd be inclined to use Ha for red instead of green. HOO can look pretty good with a bit of tweaking but that might require more Oiii than you were able to collect.

Cheers,
Rick.

[rustigsmed (Russell)]

Originally Posted by RickS

Yep, just a hint of the outer shell. It takes a lot of data or a very fast system to get more of it!

If you're doing a bi-colour I'd be inclined to use Ha for red instead of green. HOO can look pretty good with a bit of tweaking but that might require more Oiii than you were able to collect.

Cheers,
Rick.

Cheers Rick, yes I'm planning to get about 3 hours of Ha and Oiii each. Maybe even some rgb too. i'll ditch Sii. nowhere near your marathon effort! but hopefully it will iron out some noise and let me extract some more detail.

This is Red Ha, Green HaOiii and Blue Oiii. The Oiii is pretty faint and noisey, maybe i'll need to push Oiii past 10min subs (hopefully the dslr doesn't mind) but more data is the priority... but not going mega like you did!

Cheers

[RickS (Rick)]

Originally Posted by rustigsmed

This is Red Ha, Green HaOiii and Blue Oiii. The Oiii is pretty faint and noisey, maybe i'll need to push Oiii past 10min subs (hopefully the dslr doesn't mind) but more data is the priority... but not going mega like you did!

Good luck, Russ! I would have thought that mix would have been a little less green but stacking does odd things at times depending on how the normalization pans out. Look forward to the new version.

Cheers,
Rick.

[rustigsmed (Russell)]

Thanks Rick; you are right way too green, updated original post with repro - bi colour less green and a hubble version that is pushed hard to see if the Oiii shell would come out.

unfortunately it blows the centre out, i think i'll wait for more data before repro'ing again rather than layering a softer version in.

i think the bicolour atleast is an improvement.

[RickS (Rick)]

Some interesting variations there, Russ.