ICEINSPACE
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Moon Phase
CURRENT MOON
Waxing Gibbous 83%
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09-09-2019, 06:35 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,175
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Quote:
Originally Posted by Slawomir
Thank you Mike - perhaps I over-dramatized a bit... 
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..I recon you where just being facetious and a smart arse, knowing full well it was a hum dinger of an image   
Mike
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09-09-2019, 06:56 PM
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Mostly harmless...
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Join Date: Jul 2008
Location: Brisbane, Australia
Posts: 5,716
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Diminishing returns to be expected Sauvi, even with this much data. You'd have to keep doubling to see much improvement?
However, as many others have said, its a stunning image. Definitely NOT a fail!
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09-09-2019, 07:43 PM
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Lee "Wormsy" Borsboom
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Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
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Sensational, Suavi. A monster effort. Yes, you've clearly made it well into diminishing returns but at least you can be confident that you've squeezed as much out of this one as you can with your rig / skies.
And here I was being (a tiny bit) proud that I finally cracked 20hrs of data on one target. Ha.
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10-09-2019, 02:50 PM
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Mostly harmless...
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Join Date: Jul 2008
Location: Brisbane, Australia
Posts: 5,716
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We're going to need a badge for the Ice in Space avatar - anyone who has imaged a target > 100hrs gets the badge of honour! 
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10-09-2019, 04:55 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 17,897
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Thank you Greg. Is this the image you are taking about? I can quite easily see much more faint detail in the image taken with my guide scope  [/QUOTE]
No this one:
https://pbase.com/gregbradley/image/150551764/large excuse the over the top colour. Yours probably has finer and a bit more detail but the point really is the power of aperture on imaging time.
Greg.
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10-09-2019, 05:07 PM
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Registered User
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Join Date: Nov 2010
Location: sydney
Posts: 1,363
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Ohhh nonsense Suavi, its so full of detail and depth...no need to feel its anything but superb.
Bigjoe.
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10-09-2019, 06:31 PM
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Registered User
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Join Date: Sep 2014
Location: North Queensland
Posts: 3,240
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Quote:
Originally Posted by strongmanmike
..I recon you where just being facetious and a smart arse, knowing full well it was a hum dinger of an image
Mike |
But I honestly was disappointed at first. Promise.
Quote:
Originally Posted by RobF
Diminishing returns to be expected Sauvi, even with this much data. You'd have to keep doubling to see much improvement?
However, as many others have said, its a stunning image. Definitely NOT a fail!
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Thank you Rob
Quote:
Originally Posted by codemonkey
Sensational, Suavi. A monster effort. Yes, you've clearly made it well into diminishing returns but at least you can be confident that you've squeezed as much out of this one as you can with your rig / skies.
And here I was being (a tiny bit) proud that I finally cracked 20hrs of data on one target. Ha.
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20hrs is heaps, especially when a skilled astrophotographer like you processes the data
Quote:
Originally Posted by RobF
We're going to need a badge for the Ice in Space avatar - anyone who has imaged a target > 100hrs gets the badge of honour! |
That would be nice
Quote:
Originally Posted by gregbradley
Thank you Greg. Is this the image you are taking about? I can quite easily see much more faint detail in the image taken with my guide scope |
No this one:
https://pbase.com/gregbradley/image/150551764/large excuse the over the top colour. Yours probably has finer and a bit more detail but the point really is the power of aperture on imaging time.
Greg.[/QUOTE]
Love the colours Greg. I agree that aperture helps, but I still think that my 24hr simple stack n stretch shows more of the faint stuff, which is a bit surprising, given that your 17" collect nearly 20 times as many photons as my 4" 
Quote:
Originally Posted by bigjoe
Ohhh nonsense Suavi, its so full of detail and depth...no need to feel its anything but superb.
Bigjoe.
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Glad you like it Joe.
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10-09-2019, 07:38 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,175
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Quote:
Originally Posted by Slawomir
But I honestly was disappointed at first. Promise. |
Ha!....closely followed by the sliiightly deeper Placidus Observatory 72hr effort (  ), overall, it's probably the best Ha image of the Helix I've seen
Mike
becoming an unashamed Coleslawomir fanboy....
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10-09-2019, 08:02 PM
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Registered User
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Join Date: Mar 2012
Location: Mornington Peninsula, Australia
Posts: 3,950
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looks nice and smooth to me Suavi, great dedication!
Russ
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10-09-2019, 08:40 PM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,106
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Quote:
Originally Posted by Slawomir
Thank you Greg. Is this the image you are taking about? I can quite easily see much more faint detail in the image taken with my guide scope |
I have 40 hours of h-alpha Helix data taken with my 305mm F3.8 AP-honders....(back of the envelope...about 270 hours worth through a 4 inch aperture)
But I didn't get the same level of detail in the faint chevrons....
Don't know how you do it. Your star sizes are even smaller than M&T's 20" CDK data.
Quite amazing really.
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11-09-2019, 09:59 AM
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Registered User
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Join Date: Sep 2014
Location: North Queensland
Posts: 3,240
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Thank you very much for such nice feedback and encouragement Mike, Russ and Peter.
I think if I used a 5nm instead of a 3nm Ha filter, I would have gotten a good SNR a tad sooner. Overall not bad for a 4" from a tropical coastal town.
Bad news is that my PC with all Helix data has died last night - hopefully the hard drive is okay, as I have not backed all of the data 
While the PC is being repaired, I started collecting SII last night. Not much signal in there, but will try to get a few nights worth of SII. The Helix is right next to the bright one in the sky over the next week, so may need to wait a bit and hopefully the skies will remain clear in the coming weeks, as well as my data will hopefully get recovered from the malfunctioned PC 
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11-09-2019, 10:42 AM
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Ultimate Noob
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Join Date: Aug 2011
Location: Melbourne
Posts: 6,982
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Quote:
Originally Posted by Slawomir
Bad news is that my PC with all Helix data has died last night - hopefully the hard drive is okay, as I have not backed all of the data |
That doesn’t sound good at all Suavi :/
I had a similar scare last year and lost a bit of data off my first backup drive but managed to recover most of the data.
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11-09-2019, 01:29 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,175
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Quote:
Originally Posted by Slawomir
Bad news is that my PC with all Helix data has died last night - hopefully the hard drive is okay, as I have not backed all of the data |
Oh crap!  ...fingers crossed
Mike
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11-09-2019, 02:20 PM
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Registered User
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Join Date: Jan 2009
Location: Adelaide
Posts: 9,944
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Well that is deeper than my Ha effort of 50 odd hours. Those very outer chevrons are well defined in your image, not so in my data. I would say 50 hours more makes a significant difference Suavi. If you like you can use my data to add to yours. Mine is from my FSQ.
On my screen the lower area is just showing too. I would imagine there is more detail lurking there. Another another hundred hours and that is going to be one hell of an image. Outstanding image of this target with the current 100 hours.
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11-09-2019, 07:08 PM
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Registered User
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Join Date: Sep 2014
Location: North Queensland
Posts: 3,240
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Thank you Paul for your feedback and a very kind offer - my PC with all of the Helix data is being repaired, so at the moment I'm just waiting for the news, good hopefully. It would be interesting for sure to see what can be squizzed out of the combined 4" data.
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