I am thinking to get a not very expensive refraktor (120 mm) with Azimutal mounting, for deep space and terrestrial observations. Just interested in Astronomy, but have no idea what level of details can be seen with that kind. I am fascinated by Orion Nebula and Andromeda which I can see with simple 8x42 ED binoculars. Now thinking about telescope. Dobsonians look pretty heavy, I want something portable and inexpensive. Do you have any suggestion? Are refractors good for that?