4-element plossl design, has a approx 52 degree AFOV. Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets
Soft rubber eye guard that's custom fitted with a bayonet mount
1.25 inch 25mm plossl eyepiece, gives the widest viewing field along with extra sharpness and long eye relief
Threaded for standard 1.25inch astronomy filters and barlow lens
There are 4mm,6mm,8mm,10mm,12.5mm,20mm,25mm,32mm models in this series.