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Old 11-09-2017, 07:35 PM
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Camelopardalis (Dunk)
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[AstroFest] Blown across the northern horizon (M33)

Folks,

In the north, often known as the Triangulum galaxy after the inconspicuous constellation in its foreground, or sometimes the Pinwheel galaxy - not to be confused with the more obvious pinwheel, M101...

Or just M33

Collected over 3 late nights, with seeing that can only have claimed to be average at best, these photons found their way down the tube of my Esprit 100 and excited my ASI1600MM-Cool.

With its low surface brightness, this beast of a galaxy is a tricky one to process (in my limited experience), needless to say, critique and suggestions welcomed as always...

Cheers,
Dunk
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  #2  
Old 11-09-2017, 08:35 PM
Placidus (Mike and Trish)
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Well done!

Never tried that one, not in 14 years, because it's so low in the north.
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Old 11-09-2017, 08:54 PM
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multiweb (Marc)
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Nice colours. Had a go at it last year. Certainly a lot higher than Sydney.
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Old 11-09-2017, 08:57 PM
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ozstronomer (Geoff)
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Great Image Dunk, Processing looks good on my monitor

I assume this was with your ZWO 1600? I'm curious on the number of subs you collected and what exposure length was each frame

Cheers Geoff
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Old 11-09-2017, 09:13 PM
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Camelopardalis (Dunk)
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Quote:
Originally Posted by Placidus View Post
Well done!

Never tried that one, not in 14 years, because it's so low in the north.
Thanks M&T! It scrapes 30 degrees up here, so just about doable. A winter trip to the top end is soooo tempting, I know there's good stuff to be had in Cassiopeia

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Originally Posted by multiweb View Post
Nice colours. Had a go at it last year. Certainly a lot higher than Sydney.
Thanks Marc! Those extra 7 degrees can make all the difference
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Old 11-09-2017, 09:17 PM
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Camelopardalis (Dunk)
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Quote:
Originally Posted by ozstronomer View Post
Great Image Dunk, Processing looks good on my monitor

I assume this was with your ZWO 1600? I'm curious on the number of subs you collected and what exposure length was each frame
Thanks Geoff! Yep, taken with the 1600. Luminance was gain 100, 45x 2 minutes, RGB are gain 200 45x 2m. Still needs more subs...peeping at the 100%, there is still a little noise. Imperceptible at 25% scale for IIS.
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Old 11-09-2017, 09:24 PM
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MortonH
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Looks rather nice on my tablet!
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Old 11-09-2017, 09:50 PM
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Camelopardalis (Dunk)
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Thanks Morton! I actually subjected it to the tablet test before I posted
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Old 11-09-2017, 10:18 PM
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strongmanmike (Michael)
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An excellent M33 Dunk, especially from southern skies, very natural processing too, a great looking galaxy

I can just make this baby out naked eye from my observatory site here just outside Canberra, my Northern sky is my darkest and lately when it transits in the early hours and with averted vision, there she is and a bit lower down, so is big'ol Andromeda. ...not sure I'll bother hitting either of'em with the FSQ though (when I finally get it out there)...?

Mike
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Old 11-09-2017, 11:03 PM
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Camelopardalis (Dunk)
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Thanks Mike!

They're (just) a little easier from up here, and I had a lot of fun with the binoculars on those nights, chasing the galaxies, and of course M45 and Orion weren't far behind <sigh>
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Old 12-09-2017, 09:55 AM
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alpal
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That's a great picture Dunk.
It's amazing to get it so sharp when it's low on the horizon.

cheers
Allan
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  #12  
Old 12-09-2017, 10:00 AM
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Octane (Humayun)
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That's a fabulous effort, Dunk. I've always wanted to have a go at this, but, have never had the focal length!

Well done!

H
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  #13  
Old 12-09-2017, 12:26 PM
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Quote:
Originally Posted by alpal View Post
That's a great picture Dunk.
It's amazing to get it so sharp when it's low on the horizon.
Thanks Allan! My best FWHM was ~3" so it's best not viewed in all its 16 megapixel "glory", but 4 megapixel looks decent.

Quote:
Originally Posted by Octane View Post
That's a fabulous effort, Dunk. I've always wanted to have a go at this, but, have never had the focal length!
Thanks H! Yeah the faint arms sprawl over 1 degree of space, so needs a reasonably wide FOV
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Old 12-09-2017, 01:13 PM
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troypiggo (Troy)
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Lovely. Nice round stars.
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  #15  
Old 12-09-2017, 04:03 PM
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Thanks Troy!
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  #16  
Old 12-09-2017, 08:43 PM
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skysurfer
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Quote:
Originally Posted by Camelopardalis View Post
I know there's good stuff to be had in Cassiopeia


Thanks Marc! Those extra 7 degrees can make all the difference
Heart&Soul (req. Halpha or UHC filter)
Northern JewelBox (NGC 457)
Pacman Nebula (NGC281)

And in N. Qld (e.g. Cairns) Cas is just high enough in the summer (Dec).
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Old 12-09-2017, 09:02 PM
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Spookyer (Brett)
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good job Duncan.

Brett
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  #18  
Old 12-09-2017, 09:31 PM
dpastern (Dave Pastern)
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That looks a very nice effort to my uninformed eyes!
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  #19  
Old 12-09-2017, 09:46 PM
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Atmos (Colin)
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Very nice Dunk! Even with a bad FWHM it still looks like a sharp and detailed image.
Apparently it get a whopping 22º above my horizon! I have a feeling that might be below my fence line where I'm setup.
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  #20  
Old 13-09-2017, 10:13 PM
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Quote:
Originally Posted by skysurfer View Post
Heart&Soul (req. Halpha or UHC filter)
Northern JewelBox (NGC 457)
Pacman Nebula (NGC281)

And in N. Qld (e.g. Cairns) Cas is just high enough in the summer (Dec).
Indeed...I caught the big W on my point and shoot from the beach up there a couple of years back. Next time, I'll take a scope
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