#1  
Old 30-05-2019, 10:31 AM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,126
How to add Ha?

Greetings Earthlings.

When shooting nebula and I have LRGB, how/where do I add the Ha layer? To the Luminance or red channel or both? It's rather a wide Ha filter at estimate 12nm.
Reply With Quote
  #2  
Old 30-05-2019, 11:40 AM
benklerk
Registered User

benklerk is offline
 
Join Date: May 2008
Location: Katoomba
Posts: 222
Hi Kevin


When I do my LRGB Ha and OIII colour images. I add my Ha channel to the red. You can add it also to the Lum channel if you wish to see what that can produce.



If you have Pixinsight there is a good workflow you can follow.
https://www.lightvortexastronomy.com...arrowband.html
Reply With Quote
  #3  
Old 30-05-2019, 03:10 PM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,126
Thanks Ben. I'll give that a try. I don't use PI, just Photoshop. I'm too old and senile now to learn a new program like that.
Reply With Quote
  #4  
Old 30-05-2019, 03:21 PM
glend (Glen)
Registered User

glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 5,349
Kevin, in Photoshop just add it as an extra layer, like any other clipped colour layer. You have choices when it comes to colour, for example for something like M83 which has Ha nodes in the spirals, I will skew it slightly magenta to highlight them in the mix. As always, with Photoshop, it is your choice as far as artistic impression.
Reply With Quote
  #5  
Old 31-05-2019, 07:30 AM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 2,317
Hi Kevin,

Iíve found Marco Lorenziís method to be the most successful to blend Ha with RGB. See instructions at this thread. 😊

http://www.iceinspace.com.au/forum/s...d.php?t=138473

Cheers
Andy
Reply With Quote
  #6  
Old 31-05-2019, 09:31 AM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,126
Thanks Glen and Andy. I'll check that out.
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 07:47 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
SkyWatcher Australia
Advertisement
Lunatico Astronomical
Advertisement
Astromechanics
Advertisement
Bintel
Advertisement
OzScopes Authorised Dealer
Advertisement
Celestron Australia
Advertisement
Meade Australia
Advertisement
Astronomy and Electronics Centre
Advertisement