Thanks Neville and Mike. Have admired posts by so many of this area over the years, but you never really feel like you've checked out an object/region until agonised over the processing and explored every little corner.
M4/Antares region also a bit of a sentimental fav - still clear memories of a teenage Rob checking this glob out in the middle of winter from the back of my Grandparent's house through 4" F/10 reflector. No colour, but endless pinpoint stairs - won't ever forget that