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

Reply
 
Thread Tools Rate Thread
  #21  
Old 12-08-2008, 09:44 PM
marc4darkskies's Avatar
marc4darkskies (Marcus)
Billions and Billions ...

marc4darkskies is offline
 
Join Date: Mar 2007
Location: Quialigo, NSW
Posts: 3,143
Whoa!! Full res rules!!! Yep, a bit noisy maybe but hat's off to you Greg!!! Nice work!

Quote:
Originally Posted by strongmanmike View Post
... Now, who can show a full frame full res image with no background noise that preserves the smallest faintest details aaaaand that doesn't look artificially and unevenly smoothed?

Mike
Errr, that would be me Mike

Cheers, Marcus
Reply With Quote
  #22  
Old 12-08-2008, 09:45 PM
robgreaves
Registered User

robgreaves is offline
 
Join Date: Apr 2007
Location: Penrith NSW
Posts: 159
I like it

Not often you see a shot as wide as that, with such incredible detail.

Regards,
Rob
Reply With Quote
  #23  
Old 12-08-2008, 10:42 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,689
Quote:
Originally Posted by marc4darkskies View Post

Errr, that would be me Mike

Cheers, Marcus
Ahhh yes, your 6188 image was close, I'll give you that, but you look to have lost some resolution to me, plus you were imaging a pretty bright object too

T'was a nice forest though

Mike
Reply With Quote
  #24  
Old 12-08-2008, 11:25 PM
jase (Jason)
Registered User

jase is offline
 
Join Date: Sep 2006
Location: Melbourne, Victoria
Posts: 3,916
The Ha version is nothing short of magnificent. Not sure about the green stars in the colour rendition.
Reply With Quote
  #25  
Old 13-08-2008, 05:41 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Hi Jase,

Yes there was a slight problem with green. I think it was either or both of 2 things:

I noticed at one point the lens had dew on it and I hadn't put my little insulation blanket around the scope as I rarely get dewing at my dark site.
At a guess I'd say dew is most likely to show up in the green image as I have noticed clouds/light pollution show up worst in the green channel.

There were also some clouds that moved in from time to time and these were fast moving. It is quite possible some moved in on one of the green subs. I have noticed before that clouds interfering with a sub often show excessive green in the colour image.

It was a difficult night and I have had a bad run of weather at my dark site. It used to be Sydney was cloudy and my dark site would invariably be completely clear.

Nowadays the weather pattern has shifted and Sydney has been very clear and my dark site overcast!

Greg.
Reply With Quote
  #26  
Old 13-08-2008, 06:43 PM
Bassnut's Avatar
Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 5,065
Top image Greg. Not sure what to make of it specifically tho, bit WW for me ;-). The undistorted FOV is sure impressive. And the 18meg version is awesome, the res does it justice. You are going to have to be very carefull with processing posting that res tho.
Reply With Quote
  #27  
Old 13-08-2008, 08:43 PM
avandonk's Avatar
avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
Posts: 4,786
Greg I think you have over revved in all gears. You have lost a lot of dynamic range. I suppose it all depends on what you want to show. Really faint nebulae are fine in the context of a narrow field. Wide field you have a real problem.For an 18MB image it is lacking depth as well as clarity. I think it is a poor version of what is really there.

Bert
Reply With Quote
  #28  
Old 16-08-2008, 10:35 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
I did a reprocess on this one including the full resolution image as there has been some discussion about noise and I got Noise Ninja (seems like a good program).

So I used Noise Ninja and it worked quite well but it does have side effects.

Same links.

Less noise and less odd colours which ultimately come from the wrong adapter spacing to the reducer which is quite unforgiving given its F3.64 speed.

Greg.
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 12:08 AM.

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