This multi-function guiding eyepiece features a laser-etched reticle with a built-in, battery illuminator. The eyepiece is a multi-coated 12.5mm Abbe (four element) Orthoscopic. Usage possibilities include: direct guiding on stars outside the center of the field of view; greatly improved off-axis guiding to capture much fainter, sharply focused guide stars without reducing limiting magnitude; and measuring position angles and separation of double stars.
Used only two times and includes eyecup, batteries. Yours for $110 including shipping in CONUS. I accept money order or Paypal
SOLD IN 5 MINUTES THANKS DAVE!