Hi all,
My son has recently decided it would be "cool" to make a homemade refractor as a science project...he is 8 years old...
Any suggestions about where to pick up objective lenses inexpensively?
Cost (and avoiding it as much as possible) in this exercise is a high priority...I am thinking something aroun 15-20X is the go with this one.
I am partial to reflectors myself and his growing interest in refractors is a little troubling
...
Thanks!