I picked this used scope up, in very good condition, came with a padded case, sturdy tripod and 2 top notch Optolyth lenses, 20x and 30x. This is my first scope, only ever used binoculars so didn't want to start with anything too expensive. I know it's quite old now, but i'm pretty pleased with it, gives a very nice image. I think Optolyth make a 20 - 60x zoom which i'm looking out for, but I reckon it will take a bit more magnification, 80x maybe even 100x for some astronomy use, does anyone know if any other make of lens will fit these, ?