About three hours to four hours exposures of 16 min in NB for each filter.
Full res image here 10MB
http://d1355990.i49.quadrahosting.co...6164_NB_HP.jpg
Full res unstretched 16 bit tif file here 48MB
http://d1355990.i49.quadrahosting.co...OIII_UNstr.zip
I would be verry interested to see what others can squeeze out of this data.
Bert