Thank you for sharing your photos - this is exactly what this project is all about! :-)
Joint imaging together with https://deepskyhosting.com/id1138
Collected almost 33 hours total, my processing
Main focus was on narrowband, many interesting nebulae emerged
LRGB shot in bortle2, narrowband in bortle9
Processing: pixinsight1.8, fitstacker, graXpert
Equipment, parameters:
Quattro150p+zwo asi2600mm pro, optolong Olll 3nm, laida Ha 5nm
Ha: 120×300"
Olll: 240×300"
My deepest respects, but I prefer hydrogen. Did you apply it without a mask? I wanted to add more hydrogen, but then the entire frame got a reddish tint. I'm not yet skilled in mask editing and don't know how to achieve that idea yet. Maybe it will turn out like yours.
I’m not sure why the mask is there.
To prevent the frame from turning red, continuum subtraction is done.
I’m not sure if this is correct, but I did it like this:
I subtracted red from hydrogen with a coefficient adjusted by eye.
Then I stretched the hydrogen and mixed it into the red after stretching.
I did the same with oxygen.
I followed a YouTube video from the PixInsight channel where they processed M101. I merged the hydrogen with the red channel in the RGB image, so to speak. Then I applied Linear Fit. Still, there was a slight red tint that only a mask could remove. In short, I followed this video: https://youtu.be/PWThcE8EzSQ?si=Zod9RUR5JF1UikR8
28 Jul, 2026
Reply
Comments are available only to registered users. Register or log in to leave a comment.
Comments
Comments are available only to registered users. Register or log in to leave a comment.