This star shot was also taken last night during a 15 minute exposure, and yes a 15 minute download/buffer time, ahh. Actually I was surprised this shot turned out, because after I closed the shutter I happened to check the lens with my mobile phone light and found the UV filter to be fogged over. Yet it still came out like this and next time the filter and lens will be checked before hand. Pretty cool shot, but next time I'll go for 30 minutes. Peace JB