#1  
Old 29-11-2023, 03:27 PM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,935
Ngc253

This is an image of NGC253 also known as the Silver Coin Galaxy. It is located in the constellation of Sculptor at a distance of 12.8 million light years.

The data was collected at Swan Reach Imaging over the course of several nights with a total integration of 21 hours.
Imaging equipment was an OOUK AG12 with ZWO 6200 on a PME mount.

I have now migrated fully to using NINA with the advanced sequencer which is excellent if you have a weather abort situation. After the weather abort clears the roof reopens and then my systems go back to imaging the various targets I have lined up. It is very efficient in the use of clear nights.

Click here for the larger image
Attached Thumbnails
Click for full-size image (NGC253 LHaRGB 565 250 150 150 145 A.jpg)
67.1 KB134 views
Reply With Quote
  #2  
Old 29-11-2023, 03:45 PM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,078
So much to like about this image....but... not so sure about the baby-blue colour

Stars are Uber crisp with excellent profiles...and the myriad of faint fuzzies in the surrounding field are very cool.
I'm guessing the seeing was kind during the data run...a testimony to great skies and no hill required.

Nice one
Reply With Quote
  #3  
Old 29-11-2023, 05:33 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,124
Some good exposure time there Paul, as a result and armed with your dark skies, your outer halo, something never revealed in amateur images of this galaxy until about a decade or so ago and still pretty rarely is nicely revealed

Mike
Reply With Quote
  #4  
Old 29-11-2023, 08:52 PM
TrevorW
Registered User

TrevorW is offline
 
Join Date: Aug 2006
Location: Western Australia
Posts: 7,845
Nicely done, shame the jpg thumbnail doesn't show the quality of the data and processing as the as does your link
Reply With Quote
  #5  
Old 29-11-2023, 10:52 PM
AlexN's Avatar
AlexN
Tunnel Vision

AlexN is offline
 
Join Date: Mar 2008
Location: Caboolture, Australia
Posts: 6,796
Sensational image Paul. Details are so crisp and defined...

I'm with Peter on the colour, the blue is a little light - that is however the most petty of criticisms when the rest of the image is so damn good
Reply With Quote
  #6  
Old 30-11-2023, 12:34 AM
willik (Willik)
Registered User

willik is offline
 
Join Date: Nov 2009
Location: Perth WA
Posts: 715
Just a bit over on the blue for me but otherwise a Nise image
Reply With Quote
  #7  
Old 30-11-2023, 07:08 AM
Ryderscope's Avatar
Ryderscope (Rodney)
Registered User

Ryderscope is offline
 
Join Date: May 2006
Location: Glanmire, NSW
Posts: 2,159
Fantastic Paul. A nice combination of the 6200 camera with the AG12.
Reply With Quote
  #8  
Old 30-11-2023, 09:45 AM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,935
Thanks guys for the comments and discussion about the colour. I have done a reduction by 30% on the blue in the galaxy. It's now less fluro I think.

Quote:
Originally Posted by Peter Ward View Post
So much to like about this image....but... not so sure about the baby-blue colour

Stars are Uber crisp with excellent profiles...and the myriad of faint fuzzies in the surrounding field are very cool.
I'm guessing the seeing was kind during the data run...a testimony to great skies and no hill required.

Nice one
Yeah seeing is often good on the Murray plains, it helps with the sharpness of the data. Using NINA has also improved the results too. The focusing is better than Focusmax I think and after using Maxim for guiding for years I am now using PHD2 for guiding. From empirical evidence it appears that guiding is much better overall. The change has provided positive results.

Quote:
Originally Posted by strongmanmike View Post
Some good exposure time there Paul, as a result and armed with your dark skies, your outer halo, something never revealed in amateur images of this galaxy until about a decade or so ago and still pretty rarely is nicely revealed

Mike
Yes the halo of any galaxy is often hard to capture but dark skies make for an easy capture of it. The hard part from then on is retaining it in the processing. I think it is easy just to push the contrast a bit too much and that can kill the halo that might be present on any galaxy. My last attempt at this I did not show the halo all that well. Pushing the contrast on that particular image would have reduced the halo visible. Processing is always a learning exercise.
Attached Thumbnails
Click for full-size image (NGC253 LHaRGB 565 250 150 150 145 B.jpg)
67.0 KB56 views
Reply With Quote
  #9  
Old 30-11-2023, 11:08 AM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,078
Quote:
Originally Posted by Paul Haese View Post
.....I am now using PHD2 for guiding. From empirical evidence it appears that guiding is much better overall. The change has provided positive results............
Interesting. Then again guiding at 1140mm is a bit of a doddle.

I'll be very interested to see how it goes at say, 3250mm

You never know, it might even make me a convert
Reply With Quote
  #10  
Old 30-11-2023, 11:30 AM
alpal's Avatar
alpal
Registered User

alpal is offline
 
Join Date: Jan 2012
Location: Melbourne
Posts: 3,593
Hi Paul,
nice work - top data.

I still think it's far too blue.
An easy way to reduce it in Photoshop is to convert the mode to Lab Color
and the b slider in curves on the LHS up to reduce just the blue.
Then convert back to RGB and have 2 layers - one - your original
and the other the modified one -
then do a blurred layer mask to only make the change on the galaxy.
Still - everyone is different in how they want their picture to appear.
You certainly have wonderful data - much better than I ever got.

cheers
Allan
Reply With Quote
  #11  
Old 30-11-2023, 06:29 PM
kinetic's Avatar
kinetic (Steve)
ATMer and Saganist

kinetic is offline
 
Join Date: Jun 2008
Location: Adelaide S.A.
Posts: 2,280
Hi Paul,


A cracker of a result!


The full image is so crisp!


Steve
Reply With Quote
  #12  
Old 01-12-2023, 01:15 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,927
A superb image Paul. Well done

Best
JA
Reply With Quote
  #13  
Old 01-12-2023, 06:17 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,861
Wow, what a cracker!!
Superb Paul.
I am seeing only the latest version and the blue looks good to me.
That outer halo though is the standout feature.
I think most galaxies are larger than usual images show and you have demonstrated that very well here.

Greg
Reply With Quote
  #14  
Old 01-12-2023, 06:56 PM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 5,945
Hi Paul,
Beautiful image of the Sculptor or Silver Coin with super fine detail
That halo is incredible but what else do you expect from nice dark skies and a boat load of good data.
Colour is nice but seems a little bit bleached to me ( OMI by the way )
Cheers
Martin
Reply With Quote
  #15  
Old 02-12-2023, 03:54 PM
matlud (Mathew)
Registered User

matlud is offline
 
Join Date: Jun 2015
Location: NZ
Posts: 248
Fantastic image Paul!
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:53 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement
Advertisement
Astronomy and Electronics Centre
Advertisement