This is a bit of the Vela SNR, panel one in fact, in Hubble palette.
OIII to red, NII to green and SII to blue It seems to look better 6MB
http://d1355990.i49.quadrahosting.co..._HP_O_N_S_.jpg
Here is the already registered NB data unstretched fits, to play with. 30MB
http://d1355990.i49.quadrahosting.co..._01/NBdata.zip
Here is have NII+SII to red and OIII to green and blue 6MB
http://d1355990.i49.quadrahosting.co...B_N+S_O_O_.jpg
Bert