Bird-Jones This is a modified Newtonian with a spherical primary mirror. Before the light strikes the flat after being reflected, it passes through a Barlow-like achromatic lens that corrects the spherical aberration of the primary mirror. The system is also corrected for coma
This is the only information that I've been able to find on this style of reflector. Has anyone here had any experience with them? Would you reccomend them?
Thanks in advance,
Jeanette