Rosette core Ha OIII SII: 19 hrs total exposure

[Placidus]

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 (www.mikeberthonjones.smugmug.com/Category/Star-Forming-Regions/i-QW7DhW8/0/O/Rosette%20Core%20Ha%205%20OIII%205% 20SII%209hrs.jpg)

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

[bugeater]

Oooo! Very nice. Time to change my desktop wallpaper I think :)

[rustigsmed]

excellently done!
great resolution and I like the colour :)

[Atmos]

The Ha version was nice, this full colour one is brilliant :) Nicely done MnT!

[Peter Ward]

Oh...yes! .... now that is very slick :thumbsup:

Can't see the rabbit though...just the usual fish swimming toward me :)

[Placidus]

Thank you Marty !!!



Cheers, Russel. Colour blind Mike is extra pleased when he gets a thumbs up on the colour.



Thanks muchly, Colin.



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

[RickS]

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.

[strongmanmike]

Wow Mike and Trish, that looks really good, I really like the colouring too :thumbsup: 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 :D :thumbsup:

Mike

[Paul Haese]

Great colour and detail guys. Nicely composed too.

[Ryderscope]

Beautiful image MnT. Amazing what is lurking about within objects that we thought we had already fully explored.

[Andy01]

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 :)

[multiweb]

:clap: That's excellent Mike. Truly superb. :thumbsup::thumbsup::thumbsup: Now, come clean... you got some time share on the HST haven't you? ;)

[Placidus]

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



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



Thanks, Paul, that's encouraging.



Hi, Rodney. We agree with the lurking. The Rosette is normally imaged as a whole, but there are nooks and crannies to investigate.



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



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

[alpal]

Hi Mike & Trish,
what an amazing picture.
There is detail there that I've never seen before.

cheers
Allan

[marc4darkskies]

That's a stunner M&T. Composition and colour spot on! Lovely! :thumbsup:

Cheers, Marcus

[AG Hybrid]

That's astonishing! Thanks for sharing.

[marco]

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 (http://www.iceinspace.com.au/forum/showthread.php?t=85127&page=5) the "other" Mike spotted out in the rosette some time ago :P
Time for me to go on safari in the area :question::D
Cheers
Marco

[Placidus]

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



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.



Thanks, Adrian! Yippee!



Hi, Marco. Lovely to hear from you. Glad you can see the bunny too.

Best,
Mike n Trish

[Shiraz]

startling image - a new view of this one. well done

[Bassnut]

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

[Placidus]

Thanks, Ray, thanks Fred! We're absolutely delighted.

Best,
MnT

[Slawomir]

Extraordinary detail, fantastic colours - well done Mike and Trish :thumbsup:

[Placidus]

Thank you Suavi. Most kind. So tempting to want to do some neighbouring panels, make a mosaic, but that is easier for southern objects in the winter sky.