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Splitting channels-blend ha with L and stuff like that ..;

Posted: Sat Mar 13, 2021 12:49 pm
by fmeireso
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?

Re: Splitting channels-blend ha with L and stuff like that ..;

Posted: Sun Mar 14, 2021 8:51 pm
by happy-kat
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.

Re: Splitting channels-blend ha with L and stuff like that ..;

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

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

Re: Splitting channels-blend ha with L and stuff like that ..;

Posted: Mon Mar 15, 2021 8:28 pm
by Carles
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.

Re: Splitting channels-blend ha with L and stuff like that ..;

Posted: Tue Mar 16, 2021 7:01 am
by fmeireso
Thanks for pointing that out, looks promissing.

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

Re: Splitting channels-blend ha with L and stuff like that ..;

Posted: Tue Mar 16, 2021 10:32 am
by happy-kat
There is this very recent example
viewtopic.php?p=9567#p9567

Re: Splitting channels-blend ha with L and stuff like that ..;

Posted: Fri Mar 19, 2021 9:02 am
by Burly
I wasn’t even aware of that manual, impressed well done jochen 👍