Yes good shots but need more work (processing) ,something has been lost the weak nebulosity,surely 60 min total should be better than that.Check out this pic
http://users.bigpond.net.au/avandonk/RosetteN.jpg
Taken in a hurry 3x330sec Canon 300mm F2.8L Hutech Nebula filter ISO 1600.Just before dawn.
Tornado33 is correct as usual, SN cameras have a flat field.There is a lot of FUD (fear uncertainty and doubt) spread about the difficulties of collimation of SN optics.I have no experience with them.
Bert