Hi Nowadays we are having great night sky here in Poland, so I'm planning some night shots of the sky. You know, all this star trails etc.... I just want to experiment a bit. What kind of film should I use? B&W or color? And what iso? 400 or 800 or more or maybe less? I just don't want to make some obvious mistakes, although I'm aware that astrophotography is a kind of trial and error method. I already have my Zenith with bulb, remote releaser(???) (I've no idea how to call it... but I hope you know what I'm talking about) and a tripod. I 've also found a nice place, that is not light polluted. Please give me some advice, about the film and so on.