SVBONY Astronomical Telescope 90mm Lens Tube Only MAK OTA Catadioptric Lens Tube Focal Length 1250mm Focusing Power 180x Magnitude Mag Astronomical

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. HIGH PERFORMANCE LENS: SVBONY MK90 uses a convex meniscus lens instead of a traditional Schmidt correction plate, which increases contrast and eliminates the need for regular collimation. PORTABLE & STURDY DESIGN: With sturdy metal construction, this portable Maksutov telescope withstands bumps and knocks during travel, making it the perfect portable telescope for your outdoor adventures. High-performance optics: 90mm aperture and 1250mm focal length (f/13.9) allow you to observe celestial and distant objects clearly and in detail. You can observe galaxies, nebulae, and star clusters such as planetary nebulae and globular clusters. Conical extinction tube: effectively prevents interference caused by stray light, has 180 times more light gathering power, and improves your viewing experience. Perfect for a variety of observations: meeting the needs of both astronomers and nature lovers. It can be used for both heaven and earth, making it suitable not only for observing astronomical objects such as the moon, planets, and double stars, but also for observing landscapes on the ground. Accessory set: Includes a dovetail mounting base, V-style dovetail plate, objective lens cover, and dust plug to accommodate any observation session. Discover the wonders of the universe with the SVBONY MK90 Maksutov-Cassegrain Telescope, designed for both amateur astronomers and nature lovers seeking high-quality, detailed observations. The Maksutov telescope is designed to use a spherical mirror as the primary mirror and a meniscus-shaped correction shell in the entrance aperture to correct spherical aberrations. The SVBONY MK90 telescope has an aperture of 90mm, a focal length of 1250mm, and a focal ratio of 13.9. Primary mirror: Multi-coated precision aluminum coating. Secondary mirror: multi-coated precision aluminum coating and multi-coating. Light gathering power: 180x Resolution/Ultimate magnitude: 1.29 seconds/11.8 mag. It can be used for both heaven and earth, making it suitable not only for observing astronomical objects such as the moon, planets, and double stars, but also for observing landscapes on the ground. The MK90 is portable, lightweight, and ready to use right out of the box, making it perfect for travel and outdoor adventures.