I am tossing around the idea to build a truss tube scope in the 12.5" to 14.5" range (f/4.5 to f/6).
Just have a few questions.
How do you calculate the exact truss lengths, based on the f-ratio of the optics?
How do you know how heavy to make the upper cage to help with the balance?
Thanks,
Tim Hornbeck
Just have a few questions.
How do you calculate the exact truss lengths, based on the f-ratio of the optics?
How do you know how heavy to make the upper cage to help with the balance?
Thanks,
Tim Hornbeck
