A Finnish man named J-P Metsaivainio creates marvelous 4-D videos of certain well-known objects. He has at least two related to the Cygnus Loop.
The first is a zoom-out/rotation/zoom-in some 37 seconds long.
The second is a 4-D rotation which shows the shell-like structure of the Loop better than 2-D flat-fields. Put it on full screen for that
effect.
He also has a number of hi-rez stills of the Loop that are as good as observatory images one sees. The colour-intense versions are W O W.
Cheers,
=Dana in S Africa