I started out with eyepiece projection many years ago with film. I took break for about 15 years, and I'm been reading that barlows are now popular for projection instead of eyepieces. I recently got some pretty good images using my Meade 2x barlow, but I later noticed significant internal reflections when I took some images of the moon last night. Attached is an example. I then tried my trusty SMC Pentax XP-14 eyepiece (from my film years) and I have no internal reflections. I'm shooting with a Meade 12" SCT LX200 classic and a Canon 5DIV (full frame).
Is the Meade 2x barlow just a bad item for projection imaging? Why do so many people use barlows instead of eyepieces?