All I know is I've watched Jupiter through the telescope this guy claims to use and it moves at about that rate. As to judder, maybe he's trying to track with telescope mount?
Nice. Compressed air? Seems like one I'd seen for Liquid Nitrogen, similar effect but the working fluid pressure was generated from boiling Liquid nitrogen.
@Spedster777
All I know is I've watched Jupiter through the telescope this guy claims to use and it moves at about that rate. As to judder, maybe he's trying to track with telescope mount?