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  #1  
Old 08-02-2016, 03:42 PM
Placidus (Mike and Trish)
Narrowing the band

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Rosette core Ha OIII SII: 19 hrs total exposure

Pleased with this. Approx 36' arc central Rosette, with 5hrs H-alpha (green), 5hrs OIII (blue), and 9 hrs of SII (red).

Big one here

Five times the data allowed good rejection of cosmic rays and other non-constant artefacts, so much smoother than our previous effort.

We were surprised by how much SII there was to capture. That suggests a fairly advanced and active star-forming region, where recent supernovas have enriched the medium with lots of highly processed material - star-gizzards. There are fine wispy shock fronts, relatively strong in SII, draped across the central cavity.

Notice also the blue shocked material strong in OIII at 3 o'clock, which resolves into an intriguing animal with a rabbit's head, and a hog's haunches.

Aspen CG16M, 1 hour subs, unbinned, -30C. PlaneWave 20" CDK on MI-750 fork. Processing using GoodLook 64.

Best,
Mike and Trish
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Click for full-size image (Rosette Core Ha 5 OIII 5 SII 9hrs Thumbnail.jpg)
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Click for full-size image (Pig-bunny.jpg)
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  #2  
Old 08-02-2016, 03:55 PM
bugeater (Marty)
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Oooo! Very nice. Time to change my desktop wallpaper I think
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  #3  
Old 08-02-2016, 03:57 PM
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rustigsmed (Russell)
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excellently done!
great resolution and I like the colour
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  #4  
Old 08-02-2016, 05:44 PM
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Atmos (Colin)
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The Ha version was nice, this full colour one is brilliant Nicely done MnT!
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  #5  
Old 08-02-2016, 06:17 PM
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Peter Ward
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Quote:
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The Ha version was nice, this full colour one is brilliant Nicely done MnT!
Oh...yes! .... now that is very slick

Can't see the rabbit though...just the usual fish swimming toward me
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  #6  
Old 08-02-2016, 06:47 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by bugeater View Post
Oooo! Very nice. Time to change my desktop wallpaper I think
Thank you Marty !!!

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Originally Posted by rustigsmed View Post
excellently done!
great resolution and I like the colour
Cheers, Russel. Colour blind Mike is extra pleased when he gets a thumbs up on the colour.

Quote:
Originally Posted by Atmos View Post
The Ha version was nice, this full colour one is brilliant Nicely done MnT!
Thanks muchly, Colin.

Quote:
Originally Posted by Peter Ward View Post
Oh...yes! .... now that is very slick

Can't see the rabbit though...just the usual fish swimming toward me
Glad you like it, Peter. There's an attachment showing the hare, but we can certainly see the cod, especially at thumbnail size.

Best,
M n T
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  #7  
Old 08-02-2016, 08:01 PM
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RickS (Rick)
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Great result, M&T. I've always thought that little blue area was very cool and it is interesting to see it in such high resolution. Is the rabbit/hog some sort of Turducken creation?

Cheers,
Rick.
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  #8  
Old 08-02-2016, 11:08 PM
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strongmanmike (Michael)
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Wow Mike and Trish, that looks really good, I really like the colouring too The central region of the Rosette is one of the most interesting bits of sky I recon and has so much to offer the visual imaginations of guys like us

Mike
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  #9  
Old 09-02-2016, 09:43 AM
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Paul Haese
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Great colour and detail guys. Nicely composed too.
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  #10  
Old 09-02-2016, 11:47 AM
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Ryderscope (Rodney)
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Beautiful image MnT. Amazing what is lurking about within objects that we thought we had already fully explored.
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  #11  
Old 09-02-2016, 01:17 PM
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That's pretty cool, looks a bit like "the Guardian" from Star Trek, City on the Edge of Forever (the famous episode with Joan Collins).

Great details too
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  #12  
Old 09-02-2016, 04:19 PM
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multiweb (Marc)
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That's excellent Mike. Truly superb. Now, come clean... you got some time share on the HST haven't you?
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  #13  
Old 09-02-2016, 04:35 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by RickS View Post
Great result, M&T. I've always thought that little blue area was very cool and it is interesting to see it in such high resolution. Is the rabbit/hog some sort of Turducken creation?

Cheers,
Rick.
Thanks Rick. Had to look up Turducken. Probably more due to DNA damage from ionizing radiation.

Quote:
Originally Posted by strongmanmike View Post
Wow Mike and Trish, that looks really good, I really like the colouring too The central region of the Rosette is one of the most interesting bits of sky I recon and has so much to offer the visual imaginations of guys like us

Mike
Thanks muchly Mike. Colour in NB has been a struggle for us. Taking longer exposures in the fainter channels seems to help.

Quote:
Originally Posted by Paul Haese View Post
Great colour and detail guys. Nicely composed too.
Thanks, Paul, that's encouraging.

Quote:
Originally Posted by Ryderscope View Post
Beautiful image MnT. Amazing what is lurking about within objects that we thought we had already fully explored.
Hi, Rodney. We agree with the lurking. The Rosette is normally imaged as a whole, but there are nooks and crannies to investigate.

Quote:
Originally Posted by Andy01 View Post
That's pretty cool, looks a bit like "the Guardian" from Star Trek, City on the Edge of Forever (the famous episode with Joan Collins).

Great details too
Cheers, Andy! We Googled the Guardian of the Future, and you are spot on. Perhaps they copied the Rosette.

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Originally Posted by multiweb View Post
That's excellent Mike. Truly superb. Now, come clean... you got some time share on the HST haven't you?
Thanks Marc. Actually the true secret was to eject the dozen or so extra-large hunstman spiders from the observatory, so we could concentrate on working the gear without fear of getting something hairy down the back of the neck in the pitch dark.

Best,
Mike
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  #14  
Old 09-02-2016, 07:38 PM
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alpal
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Hi Mike & Trish,
what an amazing picture.
There is detail there that I've never seen before.

cheers
Allan
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  #15  
Old 09-02-2016, 09:26 PM
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marc4darkskies (Marcus)
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That's a stunner M&T. Composition and colour spot on! Lovely!

Cheers, Marcus
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  #16  
Old 10-02-2016, 10:37 AM
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AG Hybrid (Adrian)
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That's astonishing! Thanks for sharing.
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  #17  
Old 10-02-2016, 04:34 PM
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marco (Marco Lorenzi)
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Despite not being a fan of narrowband palettes, you got lots of details there Mike and I like this one!
The rabbit is a fine feature that add to the animal zoo the "other" Mike spotted out in the rosette some time ago
Time for me to go on safari in the area
Cheers
Marco
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  #18  
Old 10-02-2016, 06:49 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by alpal View Post
Hi Mike & Trish,
what an amazing picture.
There is detail there that I've never seen before.

cheers
Allan
Thanks, Allan! More came out than we hoped for.

Quote:
Originally Posted by marc4darkskies View Post
That's a stunner M&T. Composition and colour spot on! Lovely!

Cheers, Marcus
Thanks muchly, Marcus. We struggle mightily to know how best to "respect the light" with narrowband. One school of thought is to make everything red, just like natural colour. Since SII is like hen's teeth, that doesn't seem to be respecting the light. Another might be to make things with lots of OIII look blue, and things with lots of H-alpha green, but while perhaps respecting the physics and therefore the light more than any other approach, that seems most unpopular. In ignorance and for want of anything better, we've taken to exposing the weakest channels the longest, and then balancing so that the image as a whole has equal R, G, and B. Because one of us (Mike) is colourblind, at least that "neutral" approach can be automated. We're really pleased that you like the result.

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Originally Posted by AG Hybrid View Post
That's astonishing! Thanks for sharing.
Thanks, Adrian! Yippee!

Quote:
Originally Posted by marco View Post
Despite not being a fan of narrowband palettes, you got lots of details there Mike and I like this one!
The rabbit is a fine feature that add to the animal zoo the "other" Mike spotted out in the rosette some time ago
Time for me to go on safari in the area
Cheers
Marco
Hi, Marco. Lovely to hear from you. Glad you can see the bunny too.

Best,
Mike n Trish
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  #19  
Old 19-02-2016, 07:40 PM
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Shiraz (Ray)
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startling image - a new view of this one. well done
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  #20  
Old 20-02-2016, 09:09 PM
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Bassnut (Fred)
Narrowfield rules!

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Oh, thats spectacular, really, so zoomed in and still jawdropping.
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