SVBONY 1.25" 6.3mm;32mm and 40mm premium Plossl eyepieces set with 2x Barlow lens is a great choice for a astronomical observation Fully multi coated with green optics which means glass surfaces have multiple coatings for brighter light transmission;sharp and contrast images Plossl eyepieces sets 6.3mm 32mm and 40mm will give you a good variation in magnification for a wide range of targets with extra sharpness Barlow lens 2x Doubles the magnification and capacity of an existing set eyepiece Soft rubber eye guard Custom fitted with a bayonet mount and brings convenience to glasses wearers SVBONY universal cell phone adapter mount makes it easy to position a point and shoot for high magnification photography Make your mobile phone into a video camera and images capturer;so that you can explore the nature world easily through the screen Operating tips Mount the adapter on the phone or spotting scope;screw the top knob into the end Align the center of the cell phone camera and the center hole of the adapter;then tighten the phone Open the cell phone camera;slowly insert the adapter;tighten the eyepiece clamp when the image is clear Double click the phone screen to enlarge the image to the full screen More magnification for existing eyepieces to see the details of moon and bands of Jupiter clearly;the Barlow lens is a must NOTE,Each telescope has its own maximum capability of the telescope optics.And after the maximum, image get blurred.The Maximum usable magnification is usually twice the aperture of a telescope. For example,you get a 60mm aperture telescope ,then the maximum usable magnification is 120x. Features: When the Barlow lens and eyepiece using together;if the magnification is over the biggest magnification;the Barlow lens observation effect appears nearly zero or imaging becomes blurred In order to reduce the influence of imaging;careful selection of Barlow lens at different magnification is very important