older Zen Ray Ridgefield Spotting scope

[kerrdog]

Theres an old zen ray spotting scope 15-45-65 that I could buy for $150.  I don't know how old, but it's it's great condition.  It's got the straight eye piece.  Anyone know anything about these?  I was thinking to buy a cheap spotting scope (Like a red field) to keep on my bike, and wonder if this might be the thing?  I love my Zen-Ray vista binoculars.  They were dirt cheap and work awesome.


Also, what are the reasons for a curved verses strait eyepiece.  Please excuse my cluelessness.