Want to use the FSQ-106N a little for visual - at f/5, it needs some magnification to show any detail
Trying to decide between the Tak Extender Q1.6, a decent 2x barlow (Tak, TV or Vixen) or just get a quality Ortho, like the Tak Abbe's or Fujiyama in say 2 or 4mm.
The Ext-Q is exxy and hard to find some times, Barlows vary and do go IN to the drawtube which can be problematic contacting the rear Petzval element of the FSQ, and short FL Orthos can be "fun"
Opinions?