Engineered with high quality 4 element design and offering a generous 40° apparent field of view;perfect for broad field lunar observations;medium sized star clusters;provide a wide range of cloudy nebulas and deep sky targets
Enhanced Aluminum Die; the SV221 diagonal mirror is designed with enhanced aluminum mold; which has higher light transmittance and clearer vision
Fully coated eyepieces with all black interior design;no introduction of additional color for higher magnification;highly achromatic;enhance details of Jupiter;Saturn;Mars;Venus and planetary filters
With a brass pressure ring; the SV221 diagonal mirror has a brass pressure ring; which can prevent surface damage and scratch marks when the eyepiece is used with the SV221
Soft rubber eye guard that is custom fitted with a bayonet mount and folds down for the convenience of eyeglass wearers and protects glasses from getting scratched