Go Back   IceInSpace > Equipment > Software and Computers
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 31-01-2010, 08:35 PM
toryglen-boy's Avatar
toryglen-boy (Duncan)
Scotland to Australia

toryglen-boy is offline
 
Join Date: Jan 2009
Location: Canberra
Posts: 1,645
Narowband imaging with a OSC CCD?

Howdy

I have heard somewhere, that its still possible to do narrowband imaging, with a one shot colour CCD, is this the case? has anyone tried it?

i have seached everywhere, but cant find much info

thanks
Reply With Quote
  #2  
Old 31-01-2010, 10:32 PM
sadia
Registered User

sadia is offline
 
Join Date: Mar 2009
Location: melbourne
Posts: 287
Hi Duncan,

QHY8 gave me good result in Ha. There are few more experienced guys who posted their narrowband pics with QHY8 in the forum time to time. are you after any particular information?
Reply With Quote
  #3  
Old 31-01-2010, 10:38 PM
toryglen-boy's Avatar
toryglen-boy (Duncan)
Scotland to Australia

toryglen-boy is offline
 
Join Date: Jan 2009
Location: Canberra
Posts: 1,645
Quote:
Originally Posted by sadia View Post
Hi Duncan,

QHY8 gave me good result in Ha. There are few more experienced guys who posted their narrowband pics with QHY8 in the forum time to time. are you after any particular information?
yeah, whats the technique behind it?

Reply With Quote
  #4  
Old 31-01-2010, 10:49 PM
sadia
Registered User

sadia is offline
 
Join Date: Mar 2009
Location: melbourne
Posts: 287
Basically you would just keep the appropriate channel for the used filter and discard the other channel/channels. For example if imaging with Ha after reduction you would only keep Red and discard green and blue. my approach is something like this

1. Image capture
2. Reduction as usual
3. Debayer and split each frame into Red, Blue, Green.
4. Only keep the channel appropriate
5. Register and Stack images
6. Follow rest of the processing steps as usual
Reply With Quote
  #5  
Old 03-02-2010, 08:16 PM
gbeal
Registered User

gbeal is offline
 
Join Date: Oct 2004
Location: New Zealand
Posts: 4,346
Yep, can and does work, I used my QHY8 for some Ha stuff, with a Baader 7Nm filter.
As Sadia suggested and let me add, lots and lots of exposure. Think 15 - 20 - 30 minute shots.
Gary
Reply With Quote
  #6  
Old 03-02-2010, 09:59 PM
seeker372011's Avatar
seeker372011 (Narayan)
6EQUJ5

seeker372011 is offline
 
Join Date: Oct 2004
Location: Sydney
Posts: 3,663
i have heaps of examples on my flickr site,but its certainly very possible

i usually only split channels in photoshop after registering and stacking but maybe Sadia's technique is better
Reply With Quote
  #7  
Old 03-02-2010, 10:00 PM
Phoenix's Avatar
Phoenix (Steve)
Happy Sensing!

Phoenix is offline
 
Join Date: May 2007
Location: Adelaide, South Australia
Posts: 243
There is quite a good overview of a OCS vs Mono (including narrow band possibilities and limitations) written by Dr Dietmar Hager, a regular contributor to IIS and a great astroimager - see:

http://www.stargazer-observatory.com/mono_vs_osc.html
and
http://www.stargazer-observatory.com/index.html

Cheers Nix
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 12:42 PM.

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