Very very good Andy! I do like how you’ve done the three different versions and I particularly like the plain RGB image, especially from suburbia. The narrowband image is a wealth of contrast and subtle details. I love the colours in the straight RGB and the fine renditions in the HaRGB.
I do however have one criticism (not so much for the narrowband) and that’s that the noise reduction is a bit too aggressive. You used the Topaz one I believe? I find it works better for daylight than astro, I’ve tried it and decided against it because of what it does to the separation between background and stars.
Viewed at a medium view the stars relative to the background lack the fall off which gives them a harsh and unnatural fall of; its a consequence of all heavy noise reduction. Ironically this isn’t noticeable in the full narrowband image and is strongest in the RGB.
It possibly doesn’t bother a lot of people but it gives a similar view to times when I’ve attempted to blend in Ha and OIII to RGB using a Max() function in PI the wrong way. The background becomes stronger relative to the bottom of the PSF and it doesn’t look right to me
