Hi everybody,I have a newtonian 150/1200 on motorized eq5 ....for astrophotography what kind of Barlow should I use?exepensive one like televue or cheaper apo like gso?
dannat
07-04-2015, 10:09 AM
what kind of photography? i presume lunar/planetary -the televise unit is good, as are ES, even the 2" ED 2x GSO barlow is fine