Integration and Bicolor

[HadesZ]

so I have Ha and OII data from my first imaging sessions with a mono camera. (asi1600)
I know PI pretty well when it comes to dealing with OSC cameras but mono is a whole new situation for me. I wanted to play around with the bicolor data I have while I wait for more clear skies for the SII.

I registered both the OIII and the Ha data separately , then Integrated both sets separately as well. so now I have 2 images, my OIII stack and my Ha stack.  I registered both of these thinking that was my next step..  which I did, then I went to Integrate those two registered stacked images together and I get an error saying I need at least 3 files to integrate. I tried adding 2 of the same integrated Ha file but that errors too.

any help here would be much appreciated.
-Hades

[Geoff]

Register all Ha and OIII frames to your best frame and then stack Ha and OIII separately.
Geoff

[msmythers]

Hades

I would go back and register and stack your data again. This time choose a single image from one of your Ha or OII sets as the reference for both registrations. That will assure that both sets have the same registration during integration. You avoid a second round of registration and thus one less step of interpolation during registration.

As far as the registering requiring 3 images how I normally get past this when I have 2 images is to make a clone of each image. So you have image_Ha, image_Ha_clone, image_OII, image_OII_clone. I've never had a problem with this method. You've satisfied the tools requirement and your using the same number of images for each filter from an averaging standpoint.


Mike 

[HadesZ]

Thanks! this helps a ton and of course.. something simple I didnt even think of

[chrisvdberge]

you did the right thing until integrating the Ha and OIII. you need to combine these channels somehow (many ways), but not integrate them together.
Typical bicolor way would be to use PixelMath and do the following:
R = Ha
G = 0.6*OIII+0.4*Ha
B = OIII

This will give you the 'orange' look and feel, experiment with the balance and maybe putting some Ha in Blue as well to get a more natural feel.

[HadesZ]

So I did this and with my bicolor image with Ha and OIII, right after channel combination if I used STF my image had a very prominent green cast. I know this is expected due to the Ha matched to Green channel.  But now im having issues with this, I finished my SII data, so I registered the SHO data sets, integrated each set, and now when I go to LRGB combination my image has an EXTREME blue cast. The issue is duplicated even when I just do the Ha / SII bicolor again, so I think i screwed something up or I am forgetting a setting I need to check during integration or channel combination.  any ideas what I messed up here?

help is much appreciated,  feeling like a total noob with this Mono camera :]

[HadesZ]

nm... STF was linked....