Test shots last night using the Polarie and modified T1i. Cassiopeia, Cygnus. All of them about 1 hour worth of 120 sec subs, no calibration files. Stacked in DSS and processed in Photoshop CS6 64bit. Sorry about the terrible compression artifacts, I'll probably upload higher resolution versions elswhere to reduce artifacts.Cygnus - North America Nebula, Pelican Nebula, Sadr Hydrogen cloud, Veil SNR, Sadr. Cassiopeia - Heart and Soul Nebulas, Pacman Nebula, Double Cluster.