This is a three panel mosaic in NII at full resolution i.e. native sensor pixel size. FoV is 7.0 X 3.2 degrees. 7MB
http://d1355990.i49.quadrahosting.co..._NII_3PMOS.jpg
Exposures for all three panels 18x16 min in 3nm NII.
The Moon was about so there is a gradient problem between panels. Yes even with 3nm filters at F3 the Moon adds to the background. It is far worse with the OIII filter than either NII, SII or HA filters.
It may be worthwhile to collect more frames to get more detail in the RHS panel or the 'tail' of the SMC.
Bert