On August 5, 2017 at 23:02, Zohan said...
Wow, all great info thanks guys.
Frederick, how do those scopes move? Do you somehow input coordinates or a planet name and it moves automatically?
I'm afraid to see the price tag on one of those, though it looks like I might have to spend a little more anyway.
The 'old' style scopes (with clock drive) you 'zero' them out by lining them up with the north star (north hemisphere), then when you move it to a planet or star the motor driven gears move the scope at the same speed as the earth is moving. Like the other poster said, with the new scopes that are computer controlled and GPS enabled all that is much easier. Without motor drive a planet moves out of the frame within, I'll guess 8 seconds, on a 6 inch reflector with a, I think, 6mm lens on it.
