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Old 23-06-2010, 11:26 PM
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strongmanmike (Michael)
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A Magellanic Cloud in Sagittarius..?? now with ultra zoom in

With plenty of HII regions spread around it, Barnards Galaxy looks decidedly like a Magellanic Cloud but it's in Sagittarius.

At about 10' X 10' in size it is no where near the size of the LMC/SMC - it's a Mini Mag.

This is the third and last data set from the last image runs I had at new moon.

Seeing was typically pretty ordinary and it was a bit of a quicky but came out ok.

The PL16803 field is pretty big around this object but some galactic dust has shown up in the full frame wide field version, so worth a squizz .

Info under each image

Close up of the galaxy (1.2meg)
http://www.pbase.com/strongmanmike20...70582/original

Full Frame (30% full size 2.5meg)
http://www.pbase.com/strongmanmike20...70479/original

Major HII regions labelled
http://www.pbase.com/strongmanmike20...37761/original

Ultra Zoom in on HII Bubble:
http://www.pbase.com/strongmanmike20...34423/original

Cheers

Mike

Last edited by strongmanmike; 25-06-2010 at 11:29 PM.
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  #2  
Old 24-06-2010, 12:55 AM
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JD2439975 (Justin)
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Ah sometimes a quicky is all you need Mike.

Damn I'd have to do at least 10 hours to even come close to that! oh the joy of high quantum efficiency CCDs... oh the pain, the pain.

For a mini-mag it's still mighty purdy, few straight-line asterims in the top left of the full frame too (small things amusing small minds I think the saying goes).

Edit:

Noticed in your cropped image, 3 o'clock, halfway to the edge is what appears to be an edge on galaxy...but not in the DSS image (see attached).

Caught a live one maybe?
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Last edited by JD2439975; 24-06-2010 at 01:25 AM.
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  #3  
Old 24-06-2010, 09:07 AM
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multiweb (Marc)
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That's an awesome shot Mike. You got all the colors spot on. Top shelf.
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  #4  
Old 24-06-2010, 09:28 AM
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Just wonderful Mike It does indeed look like a mini Magellanic Cloud. Those HII regions really make it shine.
I wonder what the thing Justin found is - a mini meteor perhaps?

Now you just need to do a repro pinpointing its globular clusters...
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  #5  
Old 24-06-2010, 04:03 PM
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richardo (Rich)
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This turned out very nicely with the limited amount of time.... really!
Nice processing and I know this is a tough object to do justice to due to its low surface brightness.
The new CCD and starfire combo are proving a great setup, bringing in the photons quickly.

Definitely a successful data run bagging what you have.
Guess you really got to go for it when your out at your dark sky site.

Well done Migel!
Be at peace now my son, till the next dark clear nights call

Rich
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  #6  
Old 24-06-2010, 04:13 PM
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Very nice image
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  #7  
Old 24-06-2010, 06:37 PM
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and what is this?(lower RH corner)
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  #8  
Old 24-06-2010, 07:05 PM
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It's a clever little thing, can even move in a still picture.
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Old 24-06-2010, 07:14 PM
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Quote:
Originally Posted by JD2439975 View Post
Ah sometimes a quicky is all you need Mike.

Damn I'd have to do at least 10 hours to even come close to that! oh the joy of high quantum efficiency CCDs... oh the pain, the pain.

For a mini-mag it's still mighty purdy, few straight-line asterims in the top left of the full frame too (small things amusing small minds I think the saying goes).

Edit:

Noticed in your cropped image, 3 o'clock, halfway to the edge is what appears to be an edge on galaxy...but not in the DSS image (see attached).

Caught a live one maybe?
Cheers Justin

Although it is still an ABG (anti blooming gate) camera it is certainly still quite sensitive compared to DSLR's and web Cams etc

The unidentified galaxy looks to be a cosmic ray it would appear..? I have now fixed the rogue high energy skid mark . The issue for me in this image was that I only had two Ha and two Red frames (a slow moving sattelite or near Earth object traversed through three 5 min 1.6deg wide subs!) and this chip picks up cosmic ray hits like Tom Cruise picks up alien babes at a Scientology nightclub. To rid them I median combine my subs, problem is median combining only two subs doesn't get rid of random junk, you need at least three. The result was frame with lots of funny red flicks everywhere. I also added the Ha data to my Lum so the flicks ended up in the Lum too. Sigma reject combine may have worked but I prefer to use median in Astroart..... Anyway, I manually removed (almost) all of them

Quote:
Originally Posted by multiweb View Post
That's an awesome shot Mike. You got all the colors spot on. Top shelf.
Cheers Marc

Quote:
Originally Posted by SkyViking View Post
Just wonderful Mike It does indeed look like a mini Magellanic Cloud. Those HII regions really make it shine.
I wonder what the thing Justin found is - a mini meteor perhaps?

Now you just need to do a repro pinpointing its globular clusters...
Thanks, might be worth a look Rolf, I am sure there are a few?

Quote:
Originally Posted by richardo View Post
This turned out very nicely with the limited amount of time.... really!
Nice processing and I know this is a tough object to do justice to due to its low surface brightness.
The new CCD and starfire combo are proving a great setup, bringing in the photons quickly.

Definitely a successful data run bagging what you have.
Guess you really got to go for it when your out at your dark sky site.

Well done Migel!
Be at peace now my son, till the next dark clear nights call

Rich
Cheers Rich, yes it was a successful few nights, bagging three images with little issue. No marathons this time but stay tuned

Quote:
Originally Posted by TrevorW View Post
Very nice image
Thanks Trev, something not imaged that often

Quote:
Originally Posted by DavidU View Post
and what is this?(lower RH corner)
No Idea, see post above perhaps..?..looks like a couple of stars to me though
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  #10  
Old 24-06-2010, 07:18 PM
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Bassnut (Fred)
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, BUT, I do like the little red bright bits, they make this pic IMO, unusual .
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  #11  
Old 24-06-2010, 07:20 PM
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Nice one Mike. You capture some unusual objects sometimes. Good on you.
That one is definitely a real dark sky site imaging target.

Greg.
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  #12  
Old 24-06-2010, 08:53 PM
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strongmanmike (Michael)
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Not every image has to be a spectacular vista with wowy colours, insane resolution and great composition etc etc, every bit of our sky is really just as valid as the next. Sometimes an image is just that, an image, of something real, something that is just well... there, whether it is spectacular or not
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  #13  
Old 24-06-2010, 09:07 PM
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Quote:
Originally Posted by strongmanmike View Post
Not every image has to be a spectacular vista with wowy colours, insane resolution and great composition etc etc, every bit of our sky is really just as valid as the next. Sometimes an image is just that, an image, of something real, something that is just well... there, whether it is spectacular or not
LOL you and the rest set the bar up there - just what we expect every time Mike. Great sampler shot Mike
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  #14  
Old 25-06-2010, 12:17 PM
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Great shot Mike i always thought that this was just a boring galaxy, as all the images i have seen have always been just a orange elliptical galaxy..

Fred maybe you can zoom in on one of those h2 regions and show us what the details look like. now that would be cool. Here is the overall image, and here is what the little pieces look like Go on Fred hit it like its hot
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  #15  
Old 25-06-2010, 01:49 PM
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Bassnut (Fred)
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Love to, Ill give that shot next clear night, good idea.
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  #16  
Old 25-06-2010, 07:46 PM
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strongmanmike (Michael)
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Quote:
Originally Posted by bmitchell82 View Post
Great shot Mike i always thought that this was just a boring galaxy, as all the images i have seen have always been just a orange elliptical galaxy..

Fred maybe you can zoom in on one of those h2 regions and show us what the details look like. now that would be cool. Here is the overall image, and here is what the little pieces look like Go on Fred hit it like its hot
Cheers Brendan

Here's a start on the zoom in . The Starfire does a good job at just1300mm FL and an hour and a half or so of data but I too would like to see it attacked with real focal length and exposure time

http://www.pbase.com/strongmanmike20...34423/original

Mike
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  #17  
Old 25-06-2010, 08:39 PM
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Originally Posted by DavidU View Post
and what is this?(lower RH corner)
(Post 7)
A quick search turned up galaxy PGC 922095, coords 19 43 30.3, -14 37 53, apparent magnitude 17.25.

Regards, Rob
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  #18  
Old 25-06-2010, 08:52 PM
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and what is this?(lower RH corner)
How in the world do you guys spot things like this... when I view this, my reaction is simply...

"My god, it's full of stars!"
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  #19  
Old 25-06-2010, 09:10 PM
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strongmanmike (Michael)
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Quote:
Originally Posted by Robh View Post
(Post 7)
A quick search turned up galaxy PGC 922095, coords 19 43 30.3, -14 37 53, apparent magnitude 17.25.

Regards, Rob
Hey that's cool ...I wonder how many galaxies I cloned out thinking they were cosmic ray hits
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  #20  
Old 25-06-2010, 09:29 PM
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JD2439975 (Justin)
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WOW Mike if that ultra-zoom had double the FL on it that would be a truely, truely spectacular image.
Looking at it I just kept wanting to adjust the focus(not that it was out) to grab that extra detail in the bubble.

Fred you really have to do a deep one of that object if you find the time, would be well worth the effort.

Thanks for adding that Mike, what an eye opener.
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