Followed through with this one and I am sure glad I did. The left side had a good deal of cosmic rays to clean off but it was worth it.
I couldn't help with the
alliteration assonance in the title. The dark molecular clouds are fleeting structures surrounding the young stars which are pushing and pushing away at it. Eventually it will diffuse into the interstellar medium and the stars will have cleared away their dusty cocoon.
A lot got cropped off in order to fit the data into a nice rectangle. An uncropped PNG version is available here.
This image is comprised of broadband infrared (f814w), narrowband H-alpha (f656n) and H-beta (f487n), and Strömgren y (f547m) data.
North is NOT up. It is 36.5° counter-clockwise from up.