ICEINSPACE
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Moon Phase
CURRENT MOON
Waxing Gibbous 91%
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31-08-2009, 07:01 AM
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Registered User
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Join Date: Jun 2007
Posts: 2,926
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Henize 70 Superbubble
One of my favorite objects despite being faint and obscure.
120 m L=R, 60m R, 60m G, 60m B BRC-250 ST-X10ME.
http://users.westconnect.com.au/~sjastro/hen70c.html
Regards
Steven
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31-08-2009, 07:20 AM
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Currently Scopeless
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Join Date: Sep 2007
Location: Moura Qld
Posts: 1,774
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Nice image.
Adrian
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31-08-2009, 09:14 AM
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No More Infinities
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Join Date: Apr 2008
Location: Townsville
Posts: 9,698
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Nice shot Steven...you've got a few tight clusters in the shot as well.
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31-08-2009, 12:10 PM
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Registered User
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Join Date: Mar 2005
Location: Sydney
Posts: 5,151
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A complex planetary neb Steve,top work mate!
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31-08-2009, 05:05 PM
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Refracted
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Join Date: Sep 2007
Location: Carindale
Posts: 1,178
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An interesting object, which it would seem is hard to find information on. I guess I could do a plate solve to get image scale 
Based on the exposure time and aperture used, the lack of information available on the object would be explainable.
Edit: http://simbad.u-strasbg.fr/simbad/si...=SIMBAD+search , very vague
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31-08-2009, 05:06 PM
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Registered User
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Join Date: Jun 2007
Posts: 2,926
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Quote:
Originally Posted by renormalised
Nice shot Steven...you've got a few tight clusters in the shot as well.
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Thanks Carl.
The LMC is awash with these open clusters. Most of my LMC shots show these.
Quote:
Originally Posted by AdrianF
Nice image.
Adrian
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Thanks Adrian.
Quote:
Originally Posted by atalas
A complex planetary neb Steve,top work mate!
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Much appreciated Louie.
Regards
Steven
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31-08-2009, 05:38 PM
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Registered User
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Join Date: Jun 2007
Posts: 2,926
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Quote:
Originally Posted by citivolus
An interesting object, which it would seem is hard to find information on. I guess I could do a plate solve to get image scale
Based on the exposure time and aperture used, the lack of information available on the object would be explainable.
Edit: http://simbad.u-strasbg.fr/simbad/si...=SIMBAD+search , very vague |
According to my tattered Sky Catalogue 2000.0 book this object which doesn't even have a name but is located at the correct co-ordinates is 7 arcminutes in diameter which looks about right for my cropped 40 X 27 arcminute FOV.
Regards
Steven
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31-08-2009, 05:40 PM
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Refracted
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Join Date: Sep 2007
Location: Carindale
Posts: 1,178
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OK, I analysed the image using Pixy. The HII region is 8.15x8.15 arc minutes, centred roughly on 05h43m26 -67 51' 12". Now I can add it to my future targets list
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31-08-2009, 05:41 PM
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Refracted
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Join Date: Sep 2007
Location: Carindale
Posts: 1,178
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Quote:
Originally Posted by sjastro
According to my tattered Sky Catalogue 2000.0 book this object which doesn't even have a name but is located at the correct co-ordinates is 7 arcminutes in diameter which looks about right for my cropped 40 X 27 arcminute FOV.
Regards
Steven
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Thanks, that agrees fairly well with my measured size so I guess my technique wasn't too off 
Regards,
Eric
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31-08-2009, 06:14 PM
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No More Infinities
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Join Date: Apr 2008
Location: Townsville
Posts: 9,698
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At the given distance of the LMC, that makes Henize70 426.73ly in diameter. Definitely not a PN. Probably formed by multiple supernovae or a hypernova. Also, if you take the average ejecta velocity for a supernova (or series of supernova) explosion of, say, 6000kms, then the original explosion event took place about 21,700 years ago (21,675.18 years to be exact).
Last edited by renormalised; 31-08-2009 at 06:24 PM.
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31-08-2009, 06:19 PM
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Registered User
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Join Date: Oct 2006
Location: Australia
Posts: 4,646
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Very nice Steven. Again the unusual captured very nicely.
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31-08-2009, 06:25 PM
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Quote:
Originally Posted by renormalised
At the given distance of the LMC, that makes Henize70 426.73ly in diameter. Definitely not a PN. Probably formed by multiple supernovae or a hypernova.
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Henize 70 is an example of a Superbubble.
http://en.wikipedia.org/wiki/Superbubble
Steven
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31-08-2009, 06:28 PM
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No More Infinities
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Join Date: Apr 2008
Location: Townsville
Posts: 9,698
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Quote:
Originally Posted by sjastro
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Yes, I know. The reason why I mentioned the PN is because Louie mentioned it in his post. I knew it wasn't...it's too big for a start.
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31-08-2009, 07:14 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,429
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well done what an excellent image with plenty of detail.
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31-08-2009, 08:11 PM
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accepts all donations
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Join Date: Feb 2006
Location: Braidwood (outskirts)
Posts: 2,281
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Well done Steven
great detail
frank
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01-09-2009, 06:51 AM
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Registered User
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Join Date: Jun 2007
Posts: 2,926
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Thanks Doug, David, Frank.
Steven
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01-09-2009, 06:59 AM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
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That's beautiful, Steven. Lovely result.
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01-09-2009, 06:25 PM
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6EQUJ5
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Join Date: Oct 2004
Location: Sydney
Posts: 3,663
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awesome
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01-09-2009, 07:13 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,692
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Beans Means Henize 
Great capture Steve 
Mike
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02-09-2009, 06:01 AM
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Quietly watching
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Join Date: Jul 2007
Location: Yarra Junction
Posts: 3,044
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youre the one doing all the new and unusual stuff, look forward to more little known objects.
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