100yrs from now this discussion will seem quite quaint. . . . IDA will have lost the battle for the dark skies as too many amateur astronomer confused them with a potato company that made french fries which were bad for people. Locating objects visually will become impossible. But fear not! There will still be star parties. Everyone will have a goto scope with adaptive optics. Not only that, the scopes will talk to each other to collectively accumulate more light and resolution than ever. Groups will be able to team up to focus their scopes on various objects. Or the outing may have a main session with a set agenda of objects that several scopes will be visiting in unison, displayed upon a large 10' x 10' screen emitting no stray light. Yes, the CCD sensors will be able to display well over 10 billion pixels, and graininess will be a word without meaning. The display panels will be indistinguishable from a live eyepiece view. For some of those trying to replicate the "old days", some of the flat panel displays will be accessable through a 1.25" hole to look through. . . . Spin the clock another 100yrs forward. Star parties will become less socialble. All amateurs will mount their telescopes outside in the backyard constantly and be driven remotely. The data collected will be organized on the internet, and the scopes coordinated to bring groups of them into alignment to make the best use of aperature. No need to go into a dark field, you will be connected to this network everywhere you go. All you will have to do is suggest to look at an object over the web, and you will get a handful of people who will agree to remotely point their scopes to the object. You will all then be able to view the object with a collective scope far exceeding the hubble space telescope. Time to call it a Friday, Tom -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.