NGC 6164-5 after 12+ hours

[markas (Mark)]

A while back I posted this object as a work in progress.

Since June, I've had little opportunity (fill in your own details on rotten weather) to add more data, but I did accumulate a total of 12hours 10 min total: 3.5 hours Ha; 7.7 hours OIII; 1 hour RGB.

The outer OIII shockwave gets very faint, but I think the extra time was worth it. Not sure about any more, though. Maybe a revisit next year....

Set-up: ASA10N at f/6.8, Moravian 16200 camera; subs were binned x2; 2.5min RGB and 10 - 20min NB all unguided.

New image processed in Pixinsight, finished in PS.

Mark

[RickS (Rick)]

Looks good, Mark. Nice rich colours and you have a lot of the faint stuff showing.

Still a fair way to go to catch up with the 74.2 hours I did on this object though

[gregbradley]

A lovely image Markas. There is some ringing around stars near the centre that is detracting though (oversharpening?). If you can correct that it will make it a cracker of an image.

Greg.

[atalas]

Love those out shells Mark

[Atmos (Colin)]

It is a lovely deep image but I do agree with Rick... Where is that extra 60 hours of data

[Placidus (Mike and Trish)]

Lovely! The OIII shell is magnificent. One gets a strong sense of it expanding into faintly shown interstellar material, and leaving a darker cavity inside.

[strongmanmike (Michael)]

A great shot of this awesome object Mark, the outer OIII bubble edges are nicely delineated

Mike

[IanP]

Great shot Markas !!!
Any chance of posting it in a little bit better resolution

[Camelopardalis (Dunk)]

That's a cracker Mark

[markas (Mark)]

Thanks you all for the kind comments.

Ian, I don't have the means at the moment to post a higher res image.

Greg, the artifacts aren't ringing - I think they are due to my not having quite mastered RGB star replacement in NB images.

Rick, hopefully you can tell me whether a revisit next year will be worth it

Mark

[RickS (Rick)]

Originally Posted by markas

Rick, hopefully you can tell me whether a revisit next year will be worth it

There's certainly more dim Oiii to be had if you want to invest the time, Mark!

[xelasnave]

Great effort you must be very happy with your result.
I noticed unguided... your mount seems to work very well.
Alex

[rustigsmed (Russell)]

very nice work mark i love this target!

[markas (Mark)]

Russell and Alex,

Thanks for the encouragement.

Alex, the longest I have attempted was a test with 12 consecutive undithered 5 min subs. According to Pixinsight analysis, the 12 subs aligned to within 0.75 arcsec.

Mark

[multiweb (Marc)]

That's a top shot Mark. Great colors and details.

[Paul Haese]

Nice work Mark. It is a great object to image.

[markas (Mark)]

Marc and Paul,

Thanks for your comments.

Mark