Does anyone have any experience with the inexpensive 2x 1.25" barlow being sold by Owl Services (I suspect it is made by GSO, but I don't know for sure)? How does it compare with the Orion Shorty Plus or Celestron Ultima? I'm planning to get a barlow to go with the GSO 15mm superview also sold by Owl services and also possibly an Apogee 7.4-22 zoom; it would be used with a Pentax PF65ED scope (focal length 390mm) mostly for terrestial viewing but also for occassional astronomical viewing (the area where I bird has VERY dark skies!).
TIA for any advice,
Zack
TIA for any advice,
Zack
