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  #21  
Old 01-07-2014, 12:21 PM
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marc4darkskies (Marcus)
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Quote:
Originally Posted by Peter Ward View Post
Tolkien or Mexican? Humm....

Old dog, new tricks.

The link is here
Nup, don't like it - gave me a sore neck! Say, is there an obscurely named PI function to rotate a field 90 degrees?

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Originally Posted by Peter Ward View Post
...
... and re-mount the RC!
Idle threats! Glad to see the WWF fad fading though!
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  #22  
Old 01-07-2014, 12:33 PM
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Quote:
Originally Posted by marc4darkskies View Post
Say, is there an obscurely named PI function to rotate a field 90 degrees?
Menu Image>Geometry>Rotate... will do it. If you want an obscure method then there are a few choices. PixelMath would be an entertaining one
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  #23  
Old 01-07-2014, 12:40 PM
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Quote:
Originally Posted by graham.hobart View Post
That is an amazing view Peter. Very impressive.
Graham
Thanks Graham.

Quote:
Originally Posted by marc4darkskies View Post
Nup, don't like it - gave me a sore neck! Say, is there an obscurely named PI function to rotate a field 90 degrees?

Idle threats! Glad to see the WWF fad fading though!
Ha! I laugh at your taunt!

In PI...like in the Lego Movie... everything is awesome!

Process>Geometry>Fast rotation turns ordinary Mexican hats in Tolkien masterpieces, with just one click
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  #24  
Old 01-07-2014, 01:26 PM
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Octane (Humayun)
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My goodness, that is absolutely unbelieveable. :O :O :O

Fabulous work, there, sir.

H
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  #25  
Old 01-07-2014, 02:20 PM
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awesome work Peter!!
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  #26  
Old 01-07-2014, 07:30 PM
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A very nice Sombrero. Detail rarely seen.

Greg.
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  #27  
Old 01-07-2014, 09:37 PM
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Incidentally Peter, in your image it appears that M104 has a 'peanut' shaped halo surrounding the core. (Similar to NGC 5746).
It is quite a remarkable example of the processing technique required to reveal subtle, non-symetrical structure buried in an image with high dynamic range.
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  #28  
Old 01-07-2014, 09:51 PM
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Quote:
Originally Posted by clive milne View Post
Incidentally Peter, in your image it appears that M104 has a 'peanut' shaped halo surrounding the core. (Similar to NGC 5746).
It is quite a remarkable example of the processing technique required to reveal subtle, non-symetrical structure buried in an image with high dynamic range.
While I try to "keep it real" when pushing the data, I'm always wary as to whether I'm introducing artifacts.

So the "peanut" is real? Seriously? I've never thought to check.

Quote:
Originally Posted by gregbradley View Post
A very nice Sombrero. Detail rarely seen.

Greg.
Appreciated Greg

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Originally Posted by rustigsmed View Post
awesome work Peter!!
Ta. Lego rules

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Originally Posted by Octane View Post
My goodness, that is absolutely unbelieveable. :O :O :O

Fabulous work, there, sir.

H
Thank you , but nah.....just plain Yoghurt
(...Spaceballs fans probably would appreciate this )
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  #29  
Old 01-07-2014, 10:43 PM
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Quote:
Originally Posted by Peter Ward View Post
While I try to "keep it real" when pushing the data, I'm always wary as to whether I'm introducing artifacts.

So the "peanut" is real? Seriously? I've never thought to check.

The light diffracted from the nucleus of the galaxy (by the spider vanes) will be roughly aligned with the peanut lobes. There is one sure way to confirm or deny whether it is a diffraction artefact or not... rotate the ota by 45 degrees and give it another go. Or just use the RH and see if it still there.

Last edited by clive milne; 01-07-2014 at 10:56 PM.
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  #30  
Old 02-07-2014, 09:18 AM
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Quote:
Originally Posted by Peter Ward View Post
Tolkien or Mexican? Humm....

Old dog, new tricks.

The link is here
There is a serious scientific question in your image about the size (big?)(small?) of the bulge component of M104!

Galaxy Photometrists are still arguing about the nature and the size and the number of the spheroidal morphological component/components of this galaxy:
- how big is the bulge?
- how big is the halo?
- Or are the bulge and the halo, taken together as a unit, a single morphological component?

Cheers,
Robert

Astronomers have had similar problems with the bulge vs. the halo of our nearby neighbour M31 .

The resolution of these conundrums is usually found by separating out the various components of a galaxy....... by means of their constituent stellar orbits, stellar ages, and stellar heavy-element enrichments.
_____________________

Also muddying the waters in this regard is the fact that some galaxies also have very thick (broad) disk components.
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  #31  
Old 02-07-2014, 12:48 PM
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Quote:
Originally Posted by madbadgalaxyman View Post
There is a serious scientific question in your image about the size (big?)(small?) of the bulge component of M104!
Quote:
Originally Posted by clive milne View Post
The light diffracted from the nucleus of the galaxy (by the spider vanes) will be roughly aligned with the peanut lobes. There is one sure way to confirm or deny whether it is a diffraction artefact or not... rotate the ota by 45 degrees and give it another go. Or just use the RH and see if it still there.
Thanks for your insight gentlemen.

I have used the RH on M104...but found the focal length was simply too short to provide any decent image scale...hence didn't persist with it.

Might be worth re-mounting the RCOS to see what gives
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  #32  
Old 02-07-2014, 03:04 PM
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The detail is amazing - I studied the image for quite some time identifying as many background GX's as I could.
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  #33  
Old 02-07-2014, 05:33 PM
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Fabulous image for sure, has to be one of the best M104's out there. Awesome work Peter!
Did you use PI drizzle integration?
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  #34  
Old 02-07-2014, 06:28 PM
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That's some impressive detail in the dust lane. And with 2008 data. Blimey. I didn't even have a DSLR in 2008.
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  #35  
Old 02-07-2014, 06:55 PM
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Quote:
Originally Posted by Rod771 View Post
Very very nice Peter, well done!
That's unbelievable!
As I said

No one can beat the Advanced Chilean Robotic 32" Telescope.

But - Peter has come close with this latest pic although
the one on their website is not at full resolution.

here:
http://www.chart32.de/images/phocaga...umb_l_m104.jpg
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  #36  
Old 02-07-2014, 07:26 PM
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Peter Ward
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Quote:
Originally Posted by alpal View Post
As I said

No one can beat the Advanced Chilean Robotic 32" Telescope.

But - Peter has come close
Well..I can say the Germans probably didn't have to contend with the light dome of 4 million Sydney-sider houses... or there abouts

I think the photographic term is: red brick-veneer-ial disease.

Quote:
Originally Posted by cometcatcher View Post
That's some impressive detail in the dust lane. And with 2008 data. Blimey. I didn't even have a DSLR in 2008.
The STL11002 + AOL I was using at the time remains a very capable system. With good seeing the AO was producing raw data that was tight as...err...some to do with fish.. comes next

Quote:
Originally Posted by SkyViking View Post
Fabulous image for sure, has to be one of the best M104's out there. Awesome work Peter!
Did you use PI drizzle integration?
Thanks again Rolf..but, sorry, no drizzles were integrated or harmed during the making of this picture.

Quote:
Originally Posted by LewisM View Post
The detail is amazing - I studied the image for quite some time identifying as many background GX's as I could.
Many may have shifted.... perhaps into the red....
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  #37  
Old 05-07-2014, 07:46 AM
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Fine work Peter.
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