Thanks Greg, appreciate that! This is only my third tri-colour narrowband image, so definitely still learning the ropes.
Not sure if the noise reduction I did was subtle enough... I think it looks good at full res, there's still some natural looking "grain", but it doesn't look quite right at normal viewing resolution, to me anyway.
Pretty happy with the sharpness... I didn't even bother to apply any deconvolution or sharpening, but maybe I should... you can
always do with a little decon