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Old 05-05-2016, 09:18 PM
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RickS (Rick)
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A Whirlpool through the dust

A deep M51 through the integrated flux nebula. I've never noticed the dusty stuff in other RGB images but you can see some of it in Wise Band 3 infrared so it doesn't seem to be a processing artifact

The background is a bit ugly because I did stretch this fairly violently to show the IFN better...

Captured at SRO California, 14 Feb - 20 Apr, 2016

Scope: Ceravolo C300 @ f/4.9 = 1470mm FL
Mount: AP1100
Camera: FLI PL16803
Focuser: Atlas
Filters: Astrodon
Guiding: Lodestar II / Tak guide scope
Image scale: 1.26 arcsec/pixel
Exposures: 44x600s L, 46x1200s R, 16x1200s G, 18x1200s B, 38x1800s Ha (~53 hours)
Processing: PixInsight 1.8

Acquisition credit: John Kasianowicz, Daniele Malleo, Leonardo Orazi, Rob Pfile, Rick Stevenson and Jerry Yesavage.

Processing credit: Rick Stevenson

Full res version available on Astrobin: http://www.astrobin.com/247447/None/

Cheers,
Rick.
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  #2  
Old 05-05-2016, 09:35 PM
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Andy01 (Andy)
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Wow! Just Wow!
I have no words to do that image justice but crikey that's impressive!
A galactic collision on a cosmic scale, one of the top ten of the year imo.
Inspires me to one day try to shoot galaxies
Thanks for sharing
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  #3  
Old 05-05-2016, 09:57 PM
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Andy has already the first superlative that came to my lips
Gosh Rick, a fav object for so many, and this might be the most inspiring pic of it I've ever seen.

Interesting you went for the lesser focal length. Was that the plan all along to go for surrounding flux neb, or just image train you normally run that rig with? With the 16803 its a gobsmacking FOV! Agree about the dust off to the side - have never seen it shown so well. Just amazing.....
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Old 05-05-2016, 10:03 PM
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Shiraz (Ray)
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top image Rick - colourful and well resolved, but with a beautiful softness.

Interesting background - maybe some of the gradients that we spend so much time eradicating are actually real elements of our images?
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Old 05-05-2016, 10:04 PM
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Quote:
Originally Posted by Andy01 View Post
Wow! Just Wow!
I have no words to do that image justice but crikey that's impressive!
A galactic collision on a cosmic scale, one of the top ten of the year imo.
Inspires me to one day try to shoot galaxies
Thanks for sharing
Thanks, Andy! I find galaxies particularly difficult to process but they are truly amazing objects.

Quote:
Originally Posted by RobF View Post
Andy has already the first superlative that came to my lips
Gosh Rick, a fav object for so many, and this might be the most inspiring pic of it I've ever seen.

Interesting you went for the lesser focal length. Was that the plan all along to go for surrounding flux neb, or just image train you normally run that rig with? With the 16803 its a gobsmacking FOV! Agree about the dust off to the side - have never seen it shown so well. Just amazing.....
Thanks very much, Rob. We've been running at f/4.9 since we needed to recollimate (which is a process that has to be done in the fast config) and nobody has been on site for long enough to set up for f/9 again. So, it was just a happy accident I think the set up is actually more versatile at f/4.9 because you get the big FOV and still have the ability to drizzle up to higher res.
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Old 05-05-2016, 10:06 PM
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Quote:
Originally Posted by Shiraz View Post
top image Rick - colourful and well resolved, but with a beautiful softness.

Interesting background - maybe some of the gradients that we spend so much time eradicating are actually real elements of our images?
Thanks, Ray! I think you're probably right. Always worth checking the infrared data.
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Old 05-05-2016, 10:39 PM
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Atmos (Colin)
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Really nice Rick, I have to agree with Ray, that softness to the image really does it justice. Some of the kinda faint fuzzies are kinda resolved so that's nice.

I have found that from the limited imaging I have done, doing a drizzle integration does help with stellar shapes. That's probably been a part of imaging at 1.4-1.5"/pixel which usually ends up with 2<FWHM with local seeing conditions. My mount tends to flare them out more!
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Old 05-05-2016, 11:59 PM
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wow Rick, that is simply stunning, well done
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  #9  
Old 06-05-2016, 08:38 AM
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This is a really nice looking image Rick. Lovely colour and detail. Certainly a different scale from what is often seen of this object.
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  #10  
Old 06-05-2016, 09:09 AM
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Another well deserved "Bravo!!" Amazing image!

Peter
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  #11  
Old 06-05-2016, 09:37 AM
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Quote:
Originally Posted by Atmos View Post
Really nice Rick, I have to agree with Ray, that softness to the image really does it justice. Some of the kinda faint fuzzies are kinda resolved so that's nice.

I have found that from the limited imaging I have done, doing a drizzle integration does help with stellar shapes. That's probably been a part of imaging at 1.4-1.5"/pixel which usually ends up with 2<FWHM with local seeing conditions. My mount tends to flare them out more!
Thanks, Colin. I find it hard to avoid a misty look when enhancing the dust but it seems to work well for these images.

Drizzle does a great job on the square stars you get with a short FL refractor like a FSQ-106 and 9um pixels

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Originally Posted by Somnium View Post
wow Rick, that is simply stunning, well done
Thanks, Aidan.

Quote:
Originally Posted by Paul Haese View Post
This is a really nice looking image Rick. Lovely colour and detail. Certainly a different scale from what is often seen of this object.
Ta, Paul. I didn't think the world needed another vanilla M51

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Originally Posted by PRejto View Post
Another well deserved "Bravo!!" Amazing image!
Thank you, Peter.
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  #12  
Old 06-05-2016, 09:58 AM
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graham.hobart (Graham stevens)
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Whirlpool

Beautiful Rick (and team).
Looks like an ammonite feasting !
A real jewel in the dust!
Great stuff Again
Graham
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  #13  
Old 06-05-2016, 10:23 AM
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Very special !
Thanks,
Tim
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  #14  
Old 06-05-2016, 04:55 PM
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Slawomir (Suavi)
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Spectacular image Rick. I particularly like how you presented the star field and of course cosmic dust.

11/10 from me!
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  #15  
Old 06-05-2016, 05:01 PM
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ozstronomer (Geoff)
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Beautiful image Rick, unbelievable to see what around that galaxy.

Great work

Cheers Geoff
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  #16  
Old 06-05-2016, 05:13 PM
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RickS (Rick)
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Quote:
Originally Posted by graham.hobart View Post
Beautiful Rick (and team).
Looks like an ammonite feasting !
A real jewel in the dust!
Great stuff Again
Graham
I don't have any idea what Ammonites would have eaten but I can see the resemblance Thanks, Graham.

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Originally Posted by topheart View Post
Very special !
Thanks, Tim.

Quote:
Originally Posted by Slawomir View Post
Spectacular image Rick. I particularly like how you presented the star field and of course cosmic dust.

11/10 from me!
Thank you for the score, Suavi

Quote:
Originally Posted by ozstronomer View Post
Beautiful image Rick, unbelievable to see what around that galaxy.

Great work
Ta, Geoff!
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  #17  
Old 06-05-2016, 06:56 PM
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Very nice, mate, galaxy is just lovely! That one beautiful attractive spot in all that blackness, would absolutely love to be in a space ship out there seeing that sort of stuff, in colour or not!
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Old 06-05-2016, 07:32 PM
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Rick,

I wondered how you could produce such an impressive image of M51 from Australia and then I noticed it was from California.

Well done.

Regards

Paul
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  #19  
Old 06-05-2016, 11:11 PM
Stevec35 (Steve)
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Extremely nice Rick! You don't often see this thing in wide field.

Cheers

Steve
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  #20  
Old 07-05-2016, 07:27 AM
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Quote:
Originally Posted by Bart View Post
Very nice, mate, galaxy is just lovely! That one beautiful attractive spot in all that blackness, would absolutely love to be in a space ship out there seeing that sort of stuff, in colour or not!
Thanks, Bart.

Quote:
Originally Posted by phomer View Post
Rick,

I wondered how you could produce such an impressive image of M51 from Australia and then I noticed it was from California.

Well done.
Thanks, Paul. Definitely wouldn't have been possible to do that from home in Brisbane

Quote:
Originally Posted by Stevec35 View Post
Extremely nice Rick! You don't often see this thing in wide field.
Thanks, Steve. I really like the big field of the current setup at SRO. With Drizzle you can still get a reasonable level of detail on larger galaxies too.
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