Hi Peter,
what an amazing field of view to grab both nebulas in one frame.
That Astro-Physics AP155 EDF is a superb telescope.
It gives pin point stars across such a wide field.
It seems that adding Ha to the center of the Lagoon Nebula
drowns out the other colours - especially Blue
making the whole picture look Red.
Just RGB seems to give more interesting colours as per here:
https://www.adamblockphotos.com/m8-t...on-nebula.html
Adding Ha to make a Ha RGB mix makes it more bland as per here:
https://www.pampaskies.com/gallery3/...cts/LHa_RHa_GB
I can't see any way out of it unless you did a pure RGB picture
and combined it with the original HaRGB pic and
used a mask for the center of the Lagoon to block out the HaRGB.
Then again that would be cheating so I suppose to reveal
the full colour picture you'd need to publish a pure RGB pic?
cheers
Allan