Spare Tyre has a halo

[RickS]

20 hours of O3 is showing a couple of faint shells around IC5148, the Spare Tyre nebula. Martin Pugh did a nice image that shows the brighter plumes at top and bottom right but I've never seen the shells before. If I had time to capture 80 hours they'd probably be quite obvious :) I'll give it a couple more nights and see what I can do...

Cheers,
Rick.

[strongmanmike]

Eeeexcellent Rick, eeeexcellent

Must be a bit of impetus to keep going now :)

Mike

[RickS]

Thanks, Mike. I may need to do the Megadata Anonymous program if I can't stop soon :lol:

[gbeal]

Yep, the MA program is looking increasingly likely. Well done.
Gary

[gregbradley]

Super work Rick. You are on a roll for displaying super faint stuff. That seems to be just a bit above camera noise.

Greg.

[RickS]

Thanks, Gary & Greg. This is one of those times where you collect heaps of data and hope there will be a worthwhile image at the end of it!

[Rod771]

Interesting object Rick. Nice work! :)

[RickS]

Thanks, Rod. It's only small (about 2 arcmin across) and quite dim. It hasn't attracted much imaging attention, probably as a result!

[tilbrook@rbe.ne]

Great work Rick!:thumbsup:

Another challenging planetary, interesting to see the result.

Cheers,

Justin.

[RickS]

Thanks, Justin. Might take me a few nights :D

[SkyViking]

A fabulous result Rick, those shells are certainly new to me. Great work :thumbsup:
Now I'm looking forward to that 80 hour version! :P

[astronobob]

You'll be pulling Light out of Black Holes at this rate Rick !
Mighty Creditable Stuff

[strongmanmike]

See what you've started Rolf? see?? :rolleyes: astroimaging will never be the same :lol:

[RickS]

Thanks Rolf & Bob.



Too late ;) I have about 75 hours narrowband on NGC6164-6165 now. I'm at the point where it's going to take a lot more data to make a significant improvement so I'll be processing that one shortly...

[pvelez]

Why stop at 80 hours? If you are that close, why not go for the ton?

BTW - its a top shot Rick. At 2 arcminutes that is tiny. What scope are you using?

Pete

[RickS]

The incremental improvement in SNR is getting pretty small when I add new data, Pete, so another 20 hours won't make a lot of difference. Time to move to a new target.

Thanks for the kind comment. Scope is a Ceravolo 300 Astrograph - a 12" corrected Dall Kirkham. It would really shine if I had good seeing!

Cheers,
Rick.

[pvelez]

Ever considered moving it to a dark site? The sky at Coona is nice and dark.

Pete

[RickS]

Would love to one day when I have time to set up for fully automated operation.

[Shiraz]

really interesting discovery Rick. Seems like multiple shells around PNs are more common than previously thought?

[RickS]

Looks like someone beat me to it, Ray: http://www.astrodonimaging.com/gallery/display.cfm?imgID=263

Despite not having 20" aperture I'll keep at it and see what I can do (assuming some assistance from the weather gods...)


Cheers,
Rick.

[Star Catcher]

Remarkable and interesting image Rick. Look forward to any updates.
Ted

[Stevec35]

Excellent work Rick! Don Goldman has done this one with only 16.5 hours total exposure - don't know how:

http://astrodonimaging.com/gallery/display.cfm?imgID=263

I'm informed that a 3nm OIII filter makes a difference with these faint OIII halos and I think I'll be getting one.

Cheers

Steve

[RickS]

Thanks, Ted.



Thanks, Steve. Don has 20" of aperture, dark skies and decent seeing. I am using a 3nm filter too but otherwise my situation compares poorly :)

[troypiggo]

Looking promising, mate. Can't wait for the final.

[Suzy]

Wow, who knew about that halo :eyepop:.
I've heard much about this PN as it seems to be a visual observing challenge and I tried myself many times and gave up. I see now why my light polluted skies & 10" dob did me no favours. :lol: Finding out about that halo is just simply awesome. Please, please go back out there & collect more data! And thank you also for image by Don Goldman, what a knockout! This has been such an education :thumbsup:.

edit: Ooops I forgot to add: This DSO is the sole discovery by Sydney astronomer, Walter Gale. Gale crater which Curiosity rover explored on Mars was named after him as he observed & did drawings of Mars & found a number of surface features. Gale also discovered comets but this was his one & only deep sky object.
So it is a rather little special nebula for me. If I could ever get see it grrrrr...! At the time of Cuirosity landing on Mars, I observed Mars that that day & also tried the whole night to find this.
Again Rick, thank you for this.

[RickS]

Thanks for the kind comments, Suzy. I have collected a few more hours on it and will keep at it while the weather is good. The good news is that it's still a late object and there's plenty of time left to chase it this year. I'll post the results here, eventually...

Cheers,
Rick.