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Old 17-09-2017, 10:17 PM
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alocky (Andrew lockwood)
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half a silver dollar...

Although it's not quite as spectaular as Peter's stunning resolution image, here's 3.5 hours of LRGB (5 minute subs) through a 1500mm f3.6 scope with small pixels (QSI683). I suspect a large amount of the difference in the two images is due to seeing conditions and processing expertise though, so I don't think it's fair to draw too many conclusions!
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Old 17-09-2017, 10:24 PM
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Well, I like it....plus 1500mm isn't exactly short

Pretty darn good by any measure

P.S.
16.4" F3.6? . ...aye carrumba...a serious instrument!
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Old 17-09-2017, 10:43 PM
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Atmos (Colin)
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Doesn't quite have the same sharpness and contrast as Peters (its amazing) but having briefly shot this under good seeing and more so under bad seeing... Even with my tiny 677mm F/5.2 refractor, a little bit of good seeing is better than a lot of not so good. It is a large galaxy and seeing is your worst enemy!
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Old 17-09-2017, 11:04 PM
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alocky (Andrew lockwood)
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Quote:
Originally Posted by Peter Ward View Post
Well, I like it....plus 1500mm isn't exactly short

Pretty darn good by any measure

P.S.
16.4" F3.6? . ...aye carrumba...a serious instrument!
cheers Peter I think all joking aside, large aperture = smaller airy discs and the mount is probably the most important element in the system. I've got a way to go to pull the resolution you're getting with that RC, although in theory my spot size is only 3 microns out on the edge of the 8083 chip.

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Originally Posted by Atmos View Post
Doesn't quite have the same sharpness and contrast as Peters (its amazing) but having briefly shot this under good seeing and more so under bad seeing... Even with my tiny 677mm F/5.2 refractor, a little bit of good seeing is better than a lot of not so good. It is a large galaxy and seeing is your worst enemy!
Thanks Colin, I'm still having plenty of technical issues at the moment though, so in principle there's room for improvement!
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Old 18-09-2017, 05:24 AM
Placidus (Mike and Trish)
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Bravo! Beautiful colour and processing. Would love to see a link to the full size image. Well done!
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  #6  
Old 18-09-2017, 06:32 AM
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Not long ago this would be a standout image, the vertical plumes are shown well and its full of detail. Standards around here are very high. Nice work.


Greg.
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Old 18-09-2017, 06:41 AM
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Splendid result Andrew

I'm sure the image looks even better in full res.
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Old 18-09-2017, 08:24 AM
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Wonderful image with nice detail. The seeing doesn't look to bad to me.
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Old 18-09-2017, 10:48 AM
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Looks very promising, Andrew!
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Old 18-09-2017, 10:49 AM
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multiweb (Marc)
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Well that looks great already. Top shot.
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Old 18-09-2017, 11:57 AM
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Very nice image Andrew good detail
Martin
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Old 18-09-2017, 01:19 PM
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strongmanmike (Michael)
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Quite a nice shot Andrew, there looks to be little difference in feature differentiation. Seeing not withstanding, it is all in the processing here I recon ...I think once you have honed yourself and that scope in and your conditions cooperate, you will salivate

Mike
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Old 18-09-2017, 04:20 PM
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It's a great shot Andrew!well done
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Old 18-09-2017, 04:33 PM
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Andrew

Awesome photo. Look forward to seeing more!

Must be some setup you have there. What is the scope mounted on?

Cheers
David (spud)
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Old 18-09-2017, 10:14 PM
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Quote:
Originally Posted by Placidus View Post
Bravo! Beautiful colour and processing. Would love to see a link to the full size image. Well done!
Thanks Mike and Trish - the colour was done using the new pixinisght photometric colour balance tool, so I can't take much credit for that as it's an idiot proof process. I'm hoping to get enough data tonight to drizzle integrate and reprocess, so I'll put up the link to the result of that!

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Originally Posted by gregbradley View Post
Not long ago this would be a standout image, the vertical plumes are shown well and its full of detail. Standards around here are very high. Nice work.


Greg.
Thanks Greg - until Peter posted his I was feeling very pleased with myself
Quote:
Originally Posted by Slawomir View Post
Splendid result Andrew

I'm sure the image looks even better in full res.
That's only one night cut short by clouds. Same happened last night, and tonight there's a thick layer of smoke from the burnoffs in the hills. Then the weather forecast tells me the clouds will be back for another week so I was hoping for a 'big data' tour de force so I had enough frames to drizzle, but this may well be all I get this year.

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Originally Posted by DaveNZ View Post
Wonderful image with nice detail. The seeing doesn't look to bad to me.
Thanks DAve - I can only go by the guider error - that night was ~0.3 pix rms, and I've seen it drop to .1 on a really good night. These pixels are about 2" sec.
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Originally Posted by RickS View Post
Looks very promising, Andrew!
Thanks Rick - I'm still paying for this scope weather wise 4 months after getting it! It's been the worst winter I can remember for clear nights.

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Originally Posted by multiweb View Post
Well that looks great already. Top shot.
Thanks - it's probably as good as it's going to get!

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Originally Posted by willik View Post
Very nice image Andrew good detail
Martin
Thanks Martin.
Quote:
Originally Posted by strongmanmike View Post
Quite a nice shot Andrew, there looks to be little difference in feature differentiation. Seeing not withstanding, it is all in the processing here I recon ...I think once you have honed yourself and that scope in and your conditions cooperate, you will salivate

Mike
Thanks Mike - I'm in fairly heavy light pollution, and I thought the faster scope will get a smoother capture of the background noise and make it easier to subtract. Haven't really had a chance to test my theory yet! But I hope you're right, as the learning is half the fun.

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It's a great shot Andrew!well done
Cheers and thanks!
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Originally Posted by Prickly View Post
Andrew

Awesome photo. Look forward to seeing more!

Must be some setup you have there. What is the scope mounted on?

Cheers
David (spud)
Hi David - it's an ASA 16" mounted on a DDM85, so I can't blame the hardware! Although I had some trials getting the mount 100%, it is an extraordinary piece of gear.
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Old 19-09-2017, 05:51 PM
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rustigsmed (Russell)
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Great work Andrew awesome rendition
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  #17  
Old 20-09-2017, 03:02 PM
markas (Mark)
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A fine image, Andrew.

Mark
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  #18  
Old 20-09-2017, 06:50 PM
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alocky (Andrew lockwood)
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Quote:
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A fine image, Andrew.

Mark
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Originally Posted by rustigsmed View Post
Great work Andrew awesome rendition
Thanks guys!
Here's a link to the full resolution on astrobin
http://www.astrobin.com/312877/B/
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  #19  
Old 20-09-2017, 07:03 PM
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Moonman (Michael)
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Nice colour and spatial detail!
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Old 20-09-2017, 07:51 PM
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Looks pretty awesome to me!
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