I do apologize, I just checked with the camera utility and saw that the ISO was actually 1600 for the last picture. Sorry.
To focus I just turned the focus ring all the way to infinity. After a few test shots I zoomed in on the instant review to make sure that the stars appeared as crisp as I could get them. For the old 50mm lens this was all the way over til the focus ring stopped. After doing some test shots, (and with a little help from Google), I found that 10 seconds was the max I could expose before getting star trails.
Yes, the seeing conditions were beyond perfect. I just hope this wasn't a "lucky night" for me. I'm ordering a new telescope soon with tracking capabilities so hopefully some better pictures will be coming.
This picture is def at 800 ISO (I double checked), same as before tho, 50mm f/1.4 10 seconds, fixed tripod (same night). Jupiter is bottom left, you can see a small satellite trailing the sky, and Comet Gerrardd is the green object at top. I took four pictures in a row and you can see it move against the background stars. If only I had known what I was taking a picture of when I did this. I would've taken a hundred more pics and made a small video.
Also, thank you all for your interest and support. It really helps.
SEMPER FI!