Combine DSLR with H Alpa in Mozaik

Yes, the issue is that you can’t normalize 3-channel RGB data with 1-channel Ha. So what you can do is make the mosaic in RGB and in Ha separately. Then, you split the RGB channels and save those. You can then load in the R, G , B and Ha as single channel data. Register and normalize those together and save the normalized frames. These can then be loaded into the RGBCombine tool.

This will become easier in a future version.

Thanks, I understand. But how do you split a combined RGB DSLR image in seperate Channels?

Hello Hans, load RGB image, tab 2 Calibrate. At the bottom, Split Channels.

Hope this helps

Regards Dave

Sorry I don't think this is going to work

Hans, perhaps you may explain why you think it is not going to work. With only that statement it will be very hard to help you further.

Wouter

Thanks for your comment! As far as I know with mozaiks you don't need to calibrate.

I also could not find anything about this.

May be there is an other possibility for seperate the channels.

Actually what I am looking for is a work flow for achieving this

Have you tried what @Davm suggested? Because that is the workflow for separating the channels in APP. The fact that the functionality is on the Calibrate tab doesn't mean that the images get calibrated. This only happens when you add calibration frames like flats and darks.

Thanks both for your comments it has been very helpfull.

I have tried it and it worked so far. For the three pictures the channels are seperated the 4th picture is in Ha. When integration I get a grey mozaik. I understand that I have to use the RGB tool to bring back the colors in the mozaik. At the moment I don't no how. Tips are welcome.

I will also watch the tutorial about HaRGB.

Hans 

That is great progress. In tab 9 choose “combine RGB” and select “HaGB 1” or “HaRGB 2” as formula. Then load the Ha, R, G and B images and press “(re-)calculate”. Note that, when you switch formula after you have loaded the images, you need to press the “new formula” button before pressing “(re-)calculate” again.

Succes! Wouter

Thanks also to Vincent! Your workflow worked perfectly. A strange thing I found is that after combining RGB I did not need to integrate. But that is no problem. The most imported thing is that it works.