Hello stargazers,
As a newbie, I am going through that phase that obviously you all once went through regarding purchasing your first scope.
As much as I would love to buy a new scope, being unemployed, I need to be a bit frugle when it comes to spending money on an instrument. Hence, I probably will end up buying a second hand `scope`.
I have read all the relevant guides regarding choosing a scope, but would like some clarification regarding the mirror life expectancy, in particular of Schmidt-Cassegrain design telescopes.
Most of the sellers of second scopes, quote that the scope has had limited useage . If a Schmidt-Cassegrain scope was say, 9 years old, with extremely limited use, could I expect that the mirror would still be in good condition? How could I check/test for imperfections in the mirror coating of a Schmidt-Cassegrain?
regards,
Nigel