Just a quick note to second what everyone else is saying about the OM-1: I don't own one, but all the serious astrophotographers I've met and netted with seem to be pretty unanimous on their handiness... Of course, I never managed to locate a used OM-1 for $50, like the Miranda Sensorex (not to mention the 50mm and 135mm lenses that were thrown in. :>) Lew, bragging like a true cheap New Englander