Narrowband combine issues

Suggest you reload your narrowband channel integrations as Lights then run through Star Analysis, Registration an Normalisation then either Save the Normalised frames or proceed to Integration where you will have the ability to adjust the framing/cropping.

@mestutters 

Still stuck on this. I've generated 3 6panelmosaics, Ha, Oiii and Sii. Each panel was stacked before making the narrowband mosaic. All three mosaics look good. Using 'combine RGB' under tools, I then add each mosaic and always get

' The images are not compatible for making a composite image.

The image dimensions in pixels are not the same for all input images,
and/or the bit depth of the images (16bit, 32bit floats/integers)
is not the same for all images.

You can fix this by loading the input images as lights
and then you need to register and normalize them.

Finally, in 5) NORMALIZE, save the normalized and registered images
which will be fully compatible for making a composite image.'

Even after following those instructions to input each mosaic as a light then register, then normalize, then save. I can also successfully integrate the mosaics but then I just get an integrated monochrome similar to a luminance.

@mike94301 

Hi Mike,

Sorry for the delay in replying.

Rereading your earlier post I believe I had understood that you had three, 6-panel mosaic image files, one each for Ha, SII and OIII, but that RGB Combine would not work for you.  I believed that this was likely because the 3 mosaic files were not identically sized (pixel dimensions) and cosequently not star-aligned.  

Was this original assumption correct?

Having followed those additional steps, do you now have 3 identically-sized image files, one for each of your three narrow-band channels?

If you switch between these three mosaic files, are the images star-aligned?

If there is a positive response to the latter two questions then you should now be in a position to use RGB Combine using one of the narrow-band options e.g. HSO 1.

I hope my original interpretaion of your status was correct and that this reply helps.

Regards

Mike

PS: You say 'I can also successfully integrate the mosaics but then I just get an integrated monochrome similar to a luminance'.  Yes, I would expect this if on the Integrate tab you used the 'integrate per channel and all' option. If you were doing broadband imaging, this would be termed a super-luminance image as it incorporates the luminance data from the R, G and B channels into the L channel which should give a better signal to noise ratio compared with using solely the L data.

@mike94301 
I've found that if you reload the integrations as lights and then run them through a full integration that fixes this problem completely. I've ran into it before.

Appreciate all the help, thank you. I did succeed using one method, will try others soon. I do see the error in my original approach. Method used was to process each of 6 panels thru RGB combine then integrate as a mosaic. Easy and quite happy with the results. 15 - 60sec lights in Ha Oii Sii for each of 6 panelss, Carbonstar150 2600mm. My final processing skills are novice level - I think muck more can be extracted.