Make sure you are comfortable standing on a ladder for a few hours on end first Glen!
For me, I'm not even comfortable standing on the ground.
Observing chair height for me.
Comfort at the eyepiece allows more detail to seep through!
This is just my humble opinion, and not meant to degrade anything any of the previous posters have said. But i am getting older, and balance can be a problem (even without a beer).!
