A1 Compound Microscope
T1 Telescope & Binocular
The best telescope uses the magnification imaging principle of the convex lens to enlarge the small objects that the human eye can’t distinguish to the size that the human eye can distinguish. It mainly increases the opening angle of the close small objects to the eye (the object with a large angle of view is imaged on the retina Large), the best telescope uses the angular magnification M to express their magnification power.
T11.1509 Professional Reflect Type Telescope T11.1509, With Focal Length 750mm, Lens Clear Aperture Diameter 150mm, Compact and Portable - Newtonian Reflector Optical Design, The Most Popular Telescope for Astronomy Beginners & Hobbyist.