Alstar 12.5mm Illuminated Reticle Plossl Telescope Eyepiece - for Perfectly Guided astrophotos

Reticle eyepiece comes with dual crosshair; really clean view for you to observe your target; filter thread provided, Requires three button cell L1131F which is not include; This is steplessly adjustable via a knob on the side of the eyepiece; There is also a separate dioptre adjuster for you to be able to bring both the star and the crosshairs into focus simultaneously, High quality 12.5 mm focal length Plossl eyepiece with red LED illuminated double line crosshair reticle, Bright high contrast views with a 40 degree apparent field of view and 11 mm eye relief; comfortable eye relief, Excellent for accurate polar and goto alignment; and for centering guide stars for astrophotography