StarTools

i"f you think about using Ha as L I recommend to extract L from OSC and add Ha to it. Next you split OSC into channels and add the Ha to R and a bit to B, and do LRGB combination with this. In any case you need way more Ha. I often take 2h OSC and some 5-10h Ha. It depends on how strong the Ha is."

Reading the above , how is this achieved in Startools? I mean split OSC in channels, that i believe i understand, eg load the stack in Red channel and save it then.
But add Ha to R and then to B, how can this be done?

You can split channels from a OSC file by using the compose module one channel at a time and save, repeat for the other channels.

Yes , that first part i do understand.

But how to blend HA into R red and B blue ...

fmeireso wrote: ↑Mon Mar 15, 2021 6:37 pm Yes , that first part i do understand.

But how to blend HA into R red and B blue ...

Hi,

you can find that information in the "unnoficial English manual " for 1.7 by Jochen, (available in English and German, Spanish in the process...but almost done)
https://download.startools.org/StarTool ... 20V1_7.pdf

From index, >> Special techniques >>> Adding Ha to RGB datasets <---- there's two methonds explained

very useful manual, have a look ^^

Carles.

Thanks for pointing that out, looks promissing.

I was not aware this was in the manual....

There is this very recent example
viewtopic.php?p=9567#p9567

I wasn’t even aware of that manual, impressed well done jochen