Just a quickie to see how much dim NII nebulosity I could record with no bright bits to swamp the faint signal.
Two panels each 13x32min exposure with 3nm NII at 600mm F3. FoV 6.0 x 3.5 degrees.
Large image here 7MB.
http://d1355990.i49.quadrahosting.co...alSack_NII.jpg
There are some interesting nebulae and dark dust bits. I have never seen before.
Bert