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Old 16-10-2016, 07:53 PM
Placidus (Mike and Trish)
Narrowing the band

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Seven Samurai - NGC 249 261 267 etc Small Magellanic Cloud

Someone called this the Magnificent Seven, which of course is a Marlboro Country remake of the Seven Samurai by Kurosawa.

Taken on the night of the full moon, and the night before. Beggars can't be choosers. So far 7 hrs H-alpha mapped to yellow, and 8 hrs OIII mapped to blue. Palette then rotated 15 degrees toward the red for aesthetics.

The original image is here.

Another name might be the Chocolate Box - lots of goodies wrapped in brightly coloured foil, all different. The degree of separation of H-alpha rich and OIII rich chocolates is most impressive.

The brightest bluest patch toward top right is NGC 249, and the smaller bluish patch to its left is NGC 261. The bright central aqua-blue stripy patch is NGC 267.

We had a go at this with the old SBIG camera a few years ago but achieved half the exposure and only 2/3 of the field height, so there are some new features in here at the bottom.

There are several star clusters with many tiny stars. There is what looks plausibly like an OIII rich supernova remnant about 40% of the way toward 9 o'clock. There are multiple concentric shells richer in H-alpha about 50% of the way toward 1 o'clock, giving an appearance reminiscent of brain coral. There are other more dispersed H-alpha bubbles toward 3 o'clock and 4:30, and a faint but pretty arc fragment say 80% of the way toward 4 o'clock.

Toward 5 o'clock is an isolated ball which in monochrome looks very like a tomato, but it shows a patchy mixture of H-alpha and OIII.

The general appearance suggestive of multiple past supernovas, and the very strong separation into separate H-alpha regions and OIII regions is most reminiscent of the Chalice Nebula in the Greater Magellanic Cloud, and presumably the physics is similar.

Because of the guessed-at supernova remnant history, we plan to do a couple nights worth of SII, once the moon and the rain go away, but this is our first imaging run for quite a while so we wanted to show progress so far on this intriguingly rich and busy part of the SMC.

Very best,
Mike and Trish
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  #2  
Old 16-10-2016, 08:09 PM
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Atmos (Colin)
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Very nice MnT, by sheer coincidence I was looking at your past version only Saturday morning when I was comparing data I'd taken of the region over night. I was using yours as a benchmark to see if I had some underlying gradient issues which I do
Loving the detail in your shock fronts! As least they do look like shock fronts, SII of the region would be interesting. I only get bicolour as well.
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Old 16-10-2016, 09:14 PM
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SimmoW (SIMON)
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Fantastic M&T, such good resolution on your system.
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Old 16-10-2016, 09:23 PM
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strongmanmike (Michael)
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Looking good guys and yes, plenty of chocolates to sample there representing just some of the intricate but often overlooked, structures across the SMC. Nice use of moonlit skies ...I decided to give it a miss, even though it was perfectly clear on Friday night here and not bad last night either ...oh well, always better with less Moon...that's my excuse anyway...

Mike
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Old 16-10-2016, 09:57 PM
Placidus (Mike and Trish)
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Quote:
Originally Posted by Atmos View Post
Very nice MnT, by sheer coincidence I was looking at your past version only Saturday morning when I was comparing data I'd taken of the region over night. I was using yours as a benchmark to see if I had some underlying gradient issues which I do
Loving the detail in your shock fronts! As least they do look like shock fronts, SII of the region would be interesting. I only get bicolour as well.
Thanks, Colin. Looking forward to seeing your take on the area too.

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Originally Posted by SimmoW View Post
Fantastic M&T, such good resolution on your system.
Thanks, Simmo! Seeing was about 2.2 sec arc.

Quote:
Originally Posted by strongmanmike View Post
Looking good guys and yes, plenty of chocolates to sample there representing just some of the intricate but often overlooked, structures across the SMC. Nice use of moonlit skies ...I decided to give it a miss, even though it was perfectly clear on Friday night here and not bad last night either ...oh well, always better with less Moon...that's my excuse anyway...

Mike
Ta, Mike. We were probably saved by the moon being well north of where we were peeping.
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Old 16-10-2016, 11:05 PM
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Shiraz (Ray)
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hi res rendition of a really interesting region with well defined shock fronts a feature. The colour is quite restful - nice approach.

must have been an interesting fireworks display when those supernovas went off.
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Old 17-10-2016, 09:10 AM
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Camelopardalis (Dunk)
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A beauty for sure Mike & Trish
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Old 17-10-2016, 10:06 AM
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gregbradley
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I love these LMC neb images. Some of the best nebs are in that region. Nicely done.

Greg.
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Old 17-10-2016, 10:53 AM
Stevec35 (Steve)
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Looking good M&T. OIII is generally not a good idea at full moon but you seem to have got away with it very well. A lot of interesting structures there.

Cheers

Steve
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Old 17-10-2016, 11:19 AM
Placidus (Mike and Trish)
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Originally Posted by Camelopardalis View Post
A beauty for sure Mike & Trish
Thanks Dunk!

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Originally Posted by gregbradley View Post
I love these SMC neb images. Some of the best nebs are in that region. Nicely done.

Greg.
Cheers, Greg. The immediately adjacent NGC 330 region is also intensely colourful.

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Originally Posted by Stevec35 View Post
Looking good M&T. OIII is generally not a good idea at full moon but you seem to have got away with it very well. A lot of interesting structures there.

Cheers

Steve
Thanks, Steve. Aye, we got away with that. Little choice what with the weather this Winter, and Spring's not looking much better so far.
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Old 17-10-2016, 11:40 AM
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multiweb (Marc)
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Very nice close up Mike. Lots of goodies in the magellanic clouds for your light bucket and FL.
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Old 17-10-2016, 12:06 PM
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silv (Annette)
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Oh, there's a purple Kangaroo at 10 o' clock!
On its way to the tomato at 5 o' clock.

Wonderful image. Love it.
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Old 17-10-2016, 12:16 PM
topheart
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Thanks for sharing such a violent scene with us!

Wow, must be one of the most interesting fields of view in the sky>

Great work!
Cheers,
Tim
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Old 17-10-2016, 04:15 PM
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Andy01 (Andy)
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Rotate it 90 deg clockwise & it's a lovely bunch of grapes

Cool field well seen & captured M&T
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  #15  
Old 17-10-2016, 07:46 PM
Placidus (Mike and Trish)
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Quote:
Originally Posted by multiweb View Post
Very nice close up Mike. Lots of goodies in the magellanic clouds for your light bucket and FL.
Thanks, Marc, glad you like it.

Quote:
Originally Posted by silv View Post
Oh, there's a purple Kangaroo at 10 o' clock!
On its way to the tomato at 5 o' clock.

Wonderful image. Love it.
Hi, Annette! We're normally pretty good at spotting purple kangaroos but this one is eluding us. Can we entice you to download the thumbnail, draw in the roo using PhotoShop or whatever, and attach it?

Quote:
Originally Posted by topheart View Post
Thanks for sharing such a violent scene with us!

Wow, must be one of the most interesting fields of view in the sky>

Great work!
Cheers,
Tim
Thanks, Tim. The Magellanic Clouds seem more vigorous and forthright than the general neighbourhood around us here.

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Originally Posted by Andy01 View Post
Rotate it 90 deg clockwise & it's a lovely bunch of grapes

Cool field well seen & captured M&T
G'day, Andy! Got the grapes. Thanks!
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Old 17-10-2016, 10:00 PM
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andyc (Andy)
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Very fine! I'm sure there's a bird at the top, head as the blue patch to the upper right.
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  #17  
Old 18-10-2016, 07:04 PM
Placidus (Mike and Trish)
Narrowing the band

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Very fine! I'm sure there's a bird at the top, head as the blue patch to the upper right.
Thanks, Andy. You don't get many Lorikeets out our way. (Lots of other parrots, though.)
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Old 18-10-2016, 07:24 PM
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silv (Annette)
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Quote:
Quote:
Originally Posted by silv View Post
Oh, there's a purple Kangaroo at 10 o' clock!
On its way to the tomato at 5 o' clock.

Wonderful image. Love it.
Hi, Annette! We're normally pretty good at spotting purple kangaroos but this one is eluding us. Can we entice you to download the thumbnail, draw in the roo using PhotoShop or whatever, and attach it?
Absolutely!

To prove my expertise in spotting animals I'll also attach a pink rabbit playing golf as seen by my 150mm camera lens in the Prawn Nebula in 2012.

Trust me. That kangaroo is there. And possibly it' has eaten the tomato by now!
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  #19  
Old 18-10-2016, 08:44 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by silv View Post
Absolutely!

To prove my expertise in spotting animals I'll also attach a pink rabbit playing golf as seen by my 150mm camera lens in the Prawn Nebula in 2012.

Trust me. That kangaroo is there. And possibly it' has eaten the tomato by now!
Got the roo now. Never in doubt. And the Golfing Bunny is gorgeous!
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Old 18-10-2016, 09:09 PM
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Slawomir (Suavi)
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I agree with Greg - there is something magical about the nebulae in the SMC (as well as the ones in LMC). Perhaps is has something to do with the distance from us?

A splendid image M&T
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