With a 90mm large aperture and 800mm focal length, SVBONY SV520 telescope collects more light, allowing for better observation of deep-sky objects. Compared to other entry-level products with a 70mm aperture, it provides brighter and clearer images. This powerful telescope is an ideal choice for astronomy beginners, featuring well-matched components and easy assembly. We've also created an installation video and offer dedicated technical support to help you get started with ease. The altitude-azimuth mount features a worm gear drive system, ensuring smooth and precise movement. With 360° horizontal and 90° vertical adjustment, it maximizes your ability to meet all observational needs. The package includes a K25mm eyepiece and a moon filter. You can also pair it with high-magnification eyepieces and other filters to meet a variety of observational needs. SVBONY red dot finder scope is the way to go if you want the easiest way possible to locate an object and center it in your eyepiece. An adjustable small red LED dot is projected onto a non-magnifying viewing window so you can aim the main telescope quickly and easily.