|
I'm not sure what he means by 'serviced', it's not as though you need to change the oil. I'd check that there is no signs of damage and that the mount and focusser move smoothly. There needs to be some resistance to movement but not too much. You neither want the scope to fly about at the slightest touch nor be so tight that it is jerky to move. Check the state of the mirrors (both of them). A little dust is normal (difficult to avoid) but if they are tarnished you're up for a re-aluminizing, which will cost more than you are saving over new.
|