After a heartbreaking mishap with the above lens, I'm now in the process of trying to work out what to do. Is there anyone locally that could produce just the lens for me based on the focal length of the scope? I'm trying to avoid sending the tube to an early grave, but also trying to avoid purchasing a whole new scope.
Ide say that the reason why they are asking this information is that 80mm is the clear aperature, the lense needs somewhere to be held by the tube, so you will need a set of callipers to measure your old lense. that will give you the best replacement lens.
Yeah that's what I thought as well, I still haven't had a call back so I'll wait and see how it goes.
Brendan, the lenses ended up breaking more than a hip hop dancer on So You Think You Can Dance mate, I guess if worse comes to worse I could measure the internal diameter of lens cell, but fingers crossed they can find something based on the clear aperture and focal length.