Red Dot Finder Scope top part can be removed and used as a replacement for many other red dot finders The elongated mounting holes will allow mounting with hole distances from approx. 5/8 to 1 inch 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 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 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