Consider Televue Powermate › Forums › Telescopes › Advice on Barlows / tele-extenders please. › Consider Televue Powermate 7 October 2018 at 10:15 am #580062 David SwanParticipant I would consider the Televue Powermate series. I don’t have experience with the 2in versions, but I was very happy with the 1.25in 2.5x Powermate which I used with my f/5 130mm Newtonian.
