Extracting narrowband data from OSC data

@ldipenti Hi Lucas,

No, that will not be possible. Both Ha and SII are red and cannot be separated from each other. You'll need to use the L-eXtreme filter for capturing Ha and OIII and the SII filter for capturing SII, even from a dark site.

Wouter

@wvreeven Thanks Wouter, it was my hope that I could do some "narrowband imaging" from a dark site by using a technique like that, because otherwise to swamp the sensor's read noise I need very good tracking (that I don't have 🙂 )

Hi Lucas,

What you could try is to try to separate them like this...

1) Tab 0: Ha OIII extract Ha -> all the way till integrate: this will be your Ha for RGB Combine (Tab Tools)

2) Again in Tab 0: Ha OIII extract OIII -> you will need to normalize them again and then Integrate: this will be your OIII for RGB Combine

3) Again tab 0: Ha OIII Mono -> you will need to normalize them again and then Integrate: you can save as Luminance and pick it up a SII for RGB Combine

Here you can find the video I got it from:

Hope it it is useful,

Carlos

@camarieu hi Carlos thanks for the suggestion. I was thinking that maybe the extraction algorithms were able to separate the two shades of red from Ha and Sii. 
I will try this technique to see if it helps getting a nice image but I was looking to also get something scientifically accurate  

Cheers,

Lucas