Premium Optical Device: Aluminum alloy material is used to make it last longer; perfect for broad-field lunar observations; medium-sized star clusters and a wide range of cloudy nebulae; obtaining better observation results during astronomical journey
50 Degree Field of View: 1.25 inch 6 mm plossl eyepiece set offers a wider 50 degree field of view and a 6 mm focal length for observing larger objects; giving the wider view field along with extra sharpness and long eye relief
Fully Muti-Coated Optical Lens: 4-Element Optical Lens; providing bright; sharp images and excellent color correction and the fully coated groups on each lens surface maximize light transmission contrast and image clarity
#23A Light Red- The red filters are made from renowned Schott and Hoya optical glass and allow for maximum contrast on viewing planetary and lunar detail; #13 Yellow - The yellow filter improves contrast on Moon craters; on Mars; channels and polar caps become more apparent
#80A blue - The blue filter is suitable for Moon; Mars; Jupiter and Saturne observation; it improves contrast on faint areas without affecting the planet's brightness; which is why this filter is often used in combination with others