ICEINSPACE
Moon Phase
CURRENT MOON
Waning Crescent
16.4%
11-07-2021, 11:13 AM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Lagoon and Trifid with more star colour
Attachment 277546 After some trial and error I found the lack of star colour from my original
image of this was due to using high gain narrowband mode on the camera instead of lower gain broadband mode. Also I took longer exposures (300 seconds instead of 120) and there was no moon damaging the colour.
So now the stars have colour. Not as much though as if I used a CCD camera but perhaps its more accurate being mostly pastel colours like David Malin says star colours are.
Also I did a version with a synthetic luminance which is a combination of LRGB and another with HaRGB (both had the same effect).Basically it boosted the background brightness and did not affect the nebula areas except around the Trifid. So a worthwhile experiment.
Which version do you prefer?
https://pbase.com/gregbradley/image/171784413/large regular size file
https://pbase.com/gregbradley/image/171784413/original large sized file
Alternate version with synthetic luminance:
https://pbase.com/gregbradley/image/171784416/large regular sized file
https://pbase.com/gregbradley/image/171784416/original large sized file
I prefer the standard version as the synthetic luminance highlights the stars a bit too much. With nebula images you usually want the stars to recede in order to highlight the nebula.
Greg.
Attached Thumbnails
198.6 KB 102 views
199.7 KB 76 views
Last edited by gregbradley; 12-07-2021 at 11:26 AM .
11-07-2021, 12:13 PM
My God it's full of stars
Join Date: Mar 2012
Location: Melbourne
Posts: 3,257
Much nicer star colours now Greg, and my vote is for version #1
11-07-2021, 02:16 PM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Quote:
Originally Posted by
Andy01
Much nicer star colours now Greg, and my vote is for version #1
Thanks Andy. Yes the first version is my preference also.
Greg.
11-07-2021, 07:58 PM
Registered User
Join Date: Jan 2012
Location: Melbourne
Posts: 3,612
Nice now Greg,
better star colors and much more blue nebulosity around the Trifid.
I like the first version on this page.
One tiny improvement could be a blurred layer mask used on the
bright center of the Lagoon
to give it more contrast but that's artistic license.
cheers
Allan
11-07-2021, 08:04 PM
.....
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,978
Very Nice Greg - Definetly number 1.
The image pops more /better contrast and darker black lanes with richer overall colour
Best
JA
11-07-2021, 09:28 PM
Casual Cosmos Capturer
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 4,194
Details are very sharp & an eye-opening Image, excellent view colour, ballance & framing
11-07-2021, 10:21 PM
Galaxy hitchhiking guide
Join Date: Dec 2007
Location: The Shire
Posts: 8,114
The Benz with Connolly leather in the beige or black....decisions, decisions?
Both very classy renditions.
I'll be the contrarian and say number 2
12-07-2021, 08:03 AM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Quote:
Originally Posted by
alpal
Nice now Greg,
better star colors and much more blue nebulosity around the Trifid.
I like the first version on this page.
Thanks Allan.
One tiny improvement could be a blurred layer mask used on the
bright center of the Lagoon
to give it more contrast but that's artistic license.
cheers
Allan
A local contrast enhancement layer?
Quote:
Originally Posted by
JA
Very Nice Greg - Definetly number 1.
The image pops more /better contrast and darker black lanes with richer overall colour
Best
JA
Thanks JA, that was the one I preferred for those reasons.
Quote:
Originally Posted by
astronobob
Details are very sharp & an eye-opening Image, excellent view colour, ballance & framing
Thanks Bob.
Quote:
Originally Posted by
Peter Ward
The Benz with Connolly leather in the beige or black....decisions, decisions?
Both very classy renditions.
I'll be the contrarian and say number 2
Hehe, so long as the cup holders are sturdy.
Greg.
19-07-2021, 11:47 AM
Registered User
Join Date: Nov 2005
Location: Cairns
Posts: 1,087
Both....
Cheers,
Tim
19-07-2021, 12:37 PM
Highest Observatory in Oz
Join Date: May 2006
Location: Canberra
Posts: 17,178
Very nice Greg
Both lovely, I think picking a favourite will depend very much on the viewing environment and monitor used by the judge
Mike
19-07-2021, 02:05 PM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Quote:
Originally Posted by
topheart
Both....
Cheers,
Tim
Thanks Tim. Yes I think its a technique that will suit some images more than others.
Quote:
Originally Posted by
strongmanmike
Very nice Greg
Both lovely, I think picking a favourite will depend very much on the viewing environment and monitor used by the judge
Mike
Cheers 1450 Mike.
Greg.
19-07-2021, 02:38 PM
Highest Observatory in Oz
Join Date: May 2006
Location: Canberra
Posts: 17,178
Quote:
Originally Posted by
gregbradley
Cheers 1450 Mike.
Greg.
...I like that, has a ring to it...hmmm?..or there's the imperial version, 4757 Mike
19-07-2021, 03:25 PM
Registered User
Join Date: Feb 2011
Location: Kilmore, Australia
Posts: 3,342
I actually like version 2 due to it bringing out more of the faintest whispy nebulosity and dusty stuff, down around the "Toes" in particular.
19-07-2021, 03:39 PM
Registered User
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,069
Greg,
Both lovely images
My preference is no 2 though
Well done !!
Martin
19-07-2021, 06:11 PM
Mostly harmless...
Join Date: Jul 2008
Location: Brisbane, Australia
Posts: 5,716
Nice that both of them bring out the haze of blue around the lagoon (and the "foot"). I like the colours of the star clouds in #1 in particular.
p.s. If you really can't decide, there's always PixelMath in PI to just take the average
20-07-2021, 11:05 AM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Quote:
Originally Posted by
The_bluester
I actually like version 2 due to it bringing out more of the faintest whispy nebulosity and dusty stuff, down around the "Toes" in particular.
Thanks Paul. That whispy nebulosity is quite nice. Delicate as well.
Quote:
Originally Posted by
Startrek
Greg,
Both lovely images
My preference is no 2 though
Well done !!
Martin
Thanks Martin. I think its the best Lagoon/Trifid I've done so far.
Quote:
Originally Posted by
RobF
Nice that both of them bring out the haze of blue around the lagoon (and the "foot"). I like the colours of the star clouds in #1 in particular.
p.s. If you really can't decide, there's always PixelMath in PI to just take the average
Yes there is that - thanks Rob.
Greg.
20-07-2021, 07:36 PM
PI rules
Join Date: Jul 2006
Location: Sydney
Posts: 2,631
The detail is amazing. Those little dark globules in the Lagoon really stand out well.
Nicely done.
Geoff
21-07-2021, 08:03 AM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Quote:
Originally Posted by
Geoff45
The detail is amazing. Those little dark globules in the Lagoon really stand out well.
Nicely done.
Geoff
Thanks Geoff. I am happy with this AP scope and QHY camera combo.
Greg.
22-07-2021, 11:57 AM
Registered User
Join Date: Aug 2012
Location: West Coast
Posts: 787
Version #1 for me ...
23-07-2021, 09:50 AM
Registered User
Join Date: Feb 2006
Location: Sydney
Posts: 17,910
Quote:
Originally Posted by
IanP
Version #1 for me ...
Thanks Ian,
Greg.
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
All times are GMT +10. The time is now 01:43 AM .