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View Full Version here: : WR16 Wolf-Rayet star 79 hrs


Bassnut
30-05-2015, 04:38 PM
Hi Guys

A really dim one, hence the long exposure.

Big here (http://fredsastro.smugmug.com/Photography/Astrophotography-1/i-8VrgZbn/A)

About 7,500 light years distant in the southern constellation of Carina surrounded by a perfectly circular bubble about 8’ in apparent diameter.
The gas bubble is ionized from the ultraviolet radiation of the hot WR star and glows based on its elemental makeup.
As the bubble has no significant emission of OIII and SII, this image is a blend of Ha and NII.

Ha,Ha,synthetic Green,NII mapped as LRGB. Ha 60 hrs, NII 19hrs hrs all 40min subs RGB stars 1 hr.

Taken on an RCOS 10" RC Scope at f9, SBIG STXL6303E Camera and PME mount at itelescopes Siding Spring Observatory.
Processed with CCDstack, Star Tools and Photoshop.

coldlegs
30-05-2015, 04:40 PM
Now that is seriously hard work. Well done Fred.
Cheers
Stephen

gregbradley
30-05-2015, 04:45 PM
Far out Fred! What a wonderful wonderful image. This has got to be something new. Wow, look at that ball of tendril gas nebula.

Love the processing.

Fred the Hard Core!

Greg.

Stevec35
30-05-2015, 04:46 PM
But it's got stars in it <g>. Seriously though a great effort on a difficult target Fred. I don't think I would have stuck it out for 79 hours.

Cheers

Steve

multiweb
30-05-2015, 04:49 PM
Sub zero cool! Where is that in relation to eta and all that stuff?

Bassnut
30-05-2015, 05:08 PM
Thanks guys!.
Greg. The only other amatuer pic I can find is Don Goldmans, and he reconds his was the 1st amatuer colour pic of W16...and that is noisy and only with Ha. So it seems this Ha NII blend is a one off.... so far :P. The FITS subs each showed virtually nothing but noise, it was friggen hard to process.

Rod771
30-05-2015, 05:10 PM
Fascinating object, Fred! Very nice work:thumbsup:

Andy01
30-05-2015, 05:10 PM
Anazing Fred, kudos for bringing something really rare and new to the forum. Kudos too for the deep capture, as in deeper than the Marianas trench deep!
Have you looked at it rotated 90* clockwise? Looks like a Christmas bauble!
All hail the Narrowband King :)

Andy

strongmanmike
30-05-2015, 05:17 PM
Now that's something worth spending time on Fred and the result looks good too, one of your best SSO images I think, well done :thumbsup:

Mike

RickS
30-05-2015, 05:27 PM
Very cool, Fred!

Regulus
30-05-2015, 05:41 PM
That's a great photo Fred, really interesting area too.

Trev

Placidus
30-05-2015, 05:49 PM
An amazing victory Fred. Spectacular that you've got a clear sharp nebula and not a blinding mass of stars. The thing itself looks like a cross between a dandelion head and the El Alamein fountain. Very fine.

Paul Haese
30-05-2015, 07:19 PM
Lots of cool detail Fred. Those Wolf Rayet stars always present something interesting.

rustigsmed
30-05-2015, 07:28 PM
Nice one Fred, i love these spherical nebs, i didn't know there was one in Carina... probably due to the dimness factor.

jase
30-05-2015, 08:53 PM
Yikes! Don't tell me you've finally given in and started to pay respect to the stars Fred. You've even gone to the trouble of giving them some colour. Wow, I'm impressed! I would have probably hung it on you if you had of killed them with 79hrs worth of data and the fact that the principle aspect is to convey WR16. Very cool target. Great processing against what sounds like plenty of challenges. More please...:thumbsup:

Bassnut
30-05-2015, 09:05 PM
Um, I might remind you sir, Pretty much the reason I got an APOD for a starless M8 way back was your insightful suggestion to just get rid of them altogether. That pretty much started the whole hate stars saga, you are largely to blame :D.

Slawomir
30-05-2015, 09:16 PM
This is a great image, to say the least. Truly inspiring effort Fred!

jase
30-05-2015, 09:27 PM
:scared3:
You've got the wrong Jase. there's a few around here. ;) :D
Point taken, and I will not be coming up with an insightful suggestion for this image given the subject needs to embrace the WR star. :) Good going mate. :thumbsup:

Bassnut
30-05-2015, 09:35 PM
oops, sorry mate, yes, wrong Jase, lucky.

cometcatcher
04-06-2015, 12:11 AM
It looks alien. Oh wait...

The benchmark for "amateur" astrophotography has been pushed forward another step.

Fabiomax
04-06-2015, 02:10 AM
79 hours of shooting is really a lot! I believe that you've picked up any signal present, a really incredible job!
Cheers,
Fabiomax

marco
05-06-2015, 01:38 AM
79 hours on a single frame? :eyepop:
Lovely image and a really charming object off the biten path, well done Fred :thumbsup:
Clear skies
Marco

Leonardo70
05-06-2015, 05:46 PM
Wonderful , congrats.

All the best,
Leo