I don't have one, but ground a mirror back in middle school and kind of keep up with amateur astronomy.
What do you want to look at?
You want to make sure the mirror surface is good, the main tube is straight without dents, the spider is solid and the eyepiece is comfortably accessible when the main tube is near vertical. Inverters, filters and camera mounts are a plus obviously. Spotter scope is a requirement at that size.
You can spend a bunch and get auto tracking and location by PC or handheld.
I'd be tempted to start with a craigslist hand me down until you decide what features you want.
__________________
I am a Commodore PET --- Now get off my lawn you kids...
|