Atm i have a Celestron nexstar 130 slt, and i have a 25mm and 10mm and a barlow lens, now with … The "wider" of the two, the 25mm, is about right to stare at galaxies or – with an added lunar filter – at the moon. What eyepieces do I need for my Celestron NexStar 130 SLT to view planets really close up.? The Celestron NexStar SLT telescope comes with two eyepieces, a 25 mm and a 9 mm. Buy Celestron NexStar 130SLT 130mm f/5 Reflector Telescope featuring 130mm Newtonian Reflector OTA, 650mm Focal Length, f/5 Focal Ratio, Anti-Reflection Multi-Coated Optics, 1.25" Focuser, 9mm and 25mm Eyepieces… If you place the 25 mm in the 2X Barlow, it will behave as if it were a 12.5 mm eyepiece, giving you twice as much magnification as the eyepiece … Celestron supplies two nice eyepieces with the NexStar 130.