Go Back   IceInSpace > Images > Deep Space
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 04-03-2010, 09:42 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,165
Rivers of Gas repro

I did this image from the ground up and used median combine to get a cleaner image.

Here is the new version:

http://upload.pbase.com/image/122389833


and here is the original:


http://www.pbase.com/gregbradley/image/122411844


Which do you prefer new or old?

Greg.
Reply With Quote
  #2  
Old 04-03-2010, 09:52 AM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,366
Greg,

V3 is better but I also like the previous version WRT colour, now if you can get a mix between the two? just my taste so pay no attention to that
Reply With Quote
  #3  
Old 04-03-2010, 09:55 AM
iceman's Avatar
iceman (Mike)
Sir Post a Lot!

iceman is offline
 
Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
Hi Greg

Seems to be a bit splotchy and over-smoothed.

Are you using a new computer/monitor? The processing on your recent images seems to have lost the impact of your previous stuff.

Cheers
Reply With Quote
  #4  
Old 04-03-2010, 10:40 AM
TrevorW
Registered User

TrevorW is offline
 
Join Date: Aug 2006
Location: Western Australia
Posts: 8,235
Greg prefer the first myself although the colour in the repro appear to me more vibrant maybe as David suggested something between the two

Cheers
Reply With Quote
  #5  
Old 04-03-2010, 05:29 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,165
Thanks for the replies. Points taken.

I have revised the image and am now happy with this final version;

http://www.pbase.com/gregbradley/image/122389833

I think I have presented this one as well as the data lets me now.
More exposure would give more depth but its quite deep as is at around 5 hours worth. Seeing was between .94 and 1.6 arc seconds per the focus routine in CCDsoft.

Greg.
Reply With Quote
  #6  
Old 04-03-2010, 10:07 PM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,366
Greg the colour and detail is good but, you have donuts around your bright stars
Reply With Quote
  #7  
Old 05-03-2010, 07:43 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,165
Quote:
Originally Posted by h0ughy View Post
Greg the colour and detail is good but, you have donuts around your bright stars
A bit of dark fringing on some or the reflection halos on a couple?

The reflection halos I wasn't concerned with as they are minor and you are going to get them almost no matter which filters you use.

The slight bit of dark fringing is from too aggressive deconvolution.
I saved versions with less deconvolution so I'll check that out. That is the risk with deconvolution, its similar to oversharpening but its a great too though.

Greg
Reply With Quote
  #8  
Old 05-03-2010, 04:46 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,622
Overall a spectacular bit of Vela that! You might consider trying a little less decon as the stars are looking over sharpened just a tad and slightly odd shapped? Otherwise a rather specky image Greg

Mike
Reply With Quote
  #9  
Old 05-03-2010, 05:52 PM
Bassnut's Avatar
Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 5,065
I like the final one Greg, sweet (why didnt you do that the 1st post, those earlier sploches were awefull )
Reply With Quote
  #10  
Old 05-03-2010, 06:53 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,165
Quote:
Originally Posted by strongmanmike View Post
Overall a spectacular bit of Vela that! You might consider trying a little less decon as the stars are looking over sharpened just a tad and slightly odd shapped? Otherwise a rather specky image Greg

I'll redo it again as I saved various versions with less decon. Its a great tool but can be overdone.

By the way Mike there's a guy on Astromart selling an F3.8 12.5 inch home made newt with a keller corrector for US$5400. Its super well made and carbon fibre everything. It would do the job.

Mike
Quote:
Originally Posted by Bassnut View Post
I like the final one Greg, sweet (why didnt you do that the 1st post, those earlier sploches were awefull )
Its easy to overlook how many versions you need to do to get an image just right.
Reply With Quote
  #11  
Old 05-03-2010, 09:10 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,622
Hmmm yes, seems he had some issues with it too, who knows if it is fixed now..? Not that many images seemed to have been forthcoming from it either before the sale..? Certainly sounds bwudy awesome though
Reply With Quote
Reply

Bookmarks


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 08:36 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement