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View Full Version here: : [AstroFest] Blown across the northern horizon (M33)


Camelopardalis
11-09-2017, 07:35 PM
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 :D

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

Placidus
11-09-2017, 08:35 PM
Well done!

Never tried that one, not in 14 years, because it's so low in the north.

multiweb
11-09-2017, 08:54 PM
Nice colours. :thumbsup: Had a go at it last year. Certainly a lot higher than Sydney.

ozstronomer
11-09-2017, 08:57 PM
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

Camelopardalis
11-09-2017, 09:13 PM
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:D



Thanks Marc! Those extra 7 degrees can make all the difference :D

Camelopardalis
11-09-2017, 09:17 PM
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.

MortonH
11-09-2017, 09:24 PM
Looks rather nice on my tablet!

Camelopardalis
11-09-2017, 09:50 PM
Thanks Morton! I actually subjected it to the tablet test before I posted :lol:

strongmanmike
11-09-2017, 10:18 PM
An excellent M33 Dunk, especially from southern skies, very natural processing too, a great looking galaxy :thumbsup:

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

Camelopardalis
11-09-2017, 11:03 PM
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>

alpal
12-09-2017, 09:55 AM
That's a great picture Dunk.
It's amazing to get it so sharp when it's low on the horizon.

cheers
Allan

Octane
12-09-2017, 10:00 AM
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

Camelopardalis
12-09-2017, 12:26 PM
Thanks Allan! My best FWHM was ~3" so it's best not viewed in all its 16 megapixel "glory", but 4 megapixel looks decent.



Thanks H! Yeah the faint arms sprawl over 1 degree of space, so needs a reasonably wide FOV :D

troypiggo
12-09-2017, 01:13 PM
Lovely. Nice round stars.

Camelopardalis
12-09-2017, 04:03 PM
Thanks Troy!

skysurfer
12-09-2017, 08:43 PM
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).

Spookyer
12-09-2017, 09:02 PM
good job Duncan.

Brett

dpastern
12-09-2017, 09:31 PM
That looks a very nice effort to my uninformed eyes!

Atmos
12-09-2017, 09:46 PM
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.

Camelopardalis
13-09-2017, 10:13 PM
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 :D

Camelopardalis
13-09-2017, 10:15 PM
Thanks Brett, dpastern!

Thanks Colin! Never say never...I caught Andromeda from AF a couple of years ago and that barely gets above 20 degrees...it's not perfect, but a clear crisp night can work surprisingly well.

RickS
15-09-2017, 09:25 PM
That's a very respectable M33, Dunk :thumbsup: If you've got a bit of noise in the background you could head over to the dark side and do a little light noise reduction ;)

Camelopardalis
15-09-2017, 10:29 PM
Thanks Rick...but neeevvveeerrrr :lol:

But seriously, I don't currently have a 16MP display so it is largely irrelevant. I just know that it's there and have to learn to live with it ;)

RobF
15-09-2017, 10:59 PM
That's a tough one to get right Dunk. Very nicely done :thumbsup:

Camelopardalis
16-09-2017, 12:02 PM
Thanks Rob!

rustigsmed
19-09-2017, 08:36 PM
Very nice Dunk I'll have to migrate north one year to nab these northern objects you've done it well.

Russ

markas
20-09-2017, 10:09 AM
Looks great! And from so near the horizon....

Mark

Camelopardalis
25-09-2017, 10:34 PM
Thanks Russ! While we have the cream of the crop of objects in the southern sky, there are a few nice northern objects...but my list is getting shorter :lol:



Thanks Mark - testament to the crisp winter sky :thumbsup: