Hey guys, my son and I need help. We recently purchased a Skywatcher classic 150P dobson telescope. We are new to Astronomy and had a few questions about the eyepieces. We used the 10mm that came with the telescope, to view Jupiter, it was fantastic, we then used same 10mm to view Saturn, although it was clear and we could see the rings, there was 4 ghost images of saturn around the actual planet, can someone tell me why this happened?
I also did some research on viewing solar system planets, i came to the conclusion that for best results a 6mm eyepiece would be best, is this correct? and should i use a wide angle eyepiece or just the normal one?
Lastly what should i use to view nebula? We have tried looking at some using Stellarium as a guide, but have found nothing so far, probably something i haven't done right.
Thanks in advance.
