National Geographic 90/900 Refractor Telescope

1. Refractor Design: This telescope features an achromatic refractor optical design, utilizing lenses to bend light and form a clear image. This construction type is renowned for delivering crisp, high-contrast views without the need for periodic mirror collimation, making it particularly low-maintenance and user-friendly for both beginners and experienced observers. It excels in observing lunar and planetary details, as well as bright terrestrial subjects.

2. Exceptional Clarity: With its 90mm aperture and 900mm focal length, the telescope provides excellent light-gathering capability and high magnification. The precision-ground optics minimize chromatic aberration, ensuring sharp images of celestial objects like Saturn's rings or Jupiter's moons. Its F/10 focal ratio is optimized for detailed observation.

3. Versatile Magnification: The inclusion of multiple eyepieces (H-20mm, H-12mm, SR-4mm) and a powerful 3x Barlow lens offers a wide range of magnification options, from wide-field lunar views to highly magnified planetary details. This versatility allows users to adapt their viewing experience to different targets and atmospheric conditions.

4. Complete Observation System: This telescope comes as a complete package, including a robust aluminium tripod and an intuitive alt-azimuth mount for easy tracking. The added moon filter enhances lunar observation by reducing glare, while the LED viewfinder simplifies target acquisition. It's a comprehensive setup allowing immediate exploration of the night sky.

ABOUT THE NATIONAL GEOGRAPHIC 90/900 REFRACTOR TELESCOPE

The National Geographic 90/900 Refractor Telescope stands out in its series as a powerful yet accessible instrument for exploring both celestial and terrestrial wonders. This refractor telescope utilizes a 90mm objective lens and a long 900mm focal length (f/10), a design celebrated for its ability to produce sharp, high-contrast images, free from the central obstruction artifacts common in reflector designs. The optical tube, typically constructed from durable aluminum, houses glass lenses that precisely bend light to a focal point, making it exceptionally well-suited for detailed observations of the Moon's craters, the planets' prominent features, and double stars. Its robust build ensures stability, while the intuitive alt-azimuth mount simplifies tracking targets across the sky. The longer focal length makes it particularly adept at achieving higher magnifications, distinguishing it from shorter focal length models ideal for wide-field views. This telescope is an excellent choice for aspiring astronomers and nature enthusiasts alike, offering a substantial step up in optical performance for detailed viewing.

ABOUT NATIONAL GEOGRAPHIC

National Geographic, established in 1888, is a world-renowned brand synonymous with exploration, scientific research, and education. While not a direct manufacturer of optical instruments, National Geographic licenses its name to products that adhere to its commitment to quality, accessibility, and fostering a deeper understanding of the world and the universe. The brand's philosophy is rooted in inspiring curiosity and providing tools for discovery. National Geographic products, including telescopes, are known for their reliable performance and user-friendly designs, making astronomy and nature observation accessible to a broad audience. They stand as a testament to the brand's enduring legacy of adventure and knowledge dissemination.

MAIN FEATURES

• Optical Design: Achromatic refractor telescope, providing crisp, high-contrast images ideal for planetary and lunar observation. No central obstruction ensures excellent image clarity.

• Aperture: 90 mm objective lens gathers ample light for bright, detailed views of celestial objects.

• Focal Length: 900 mm focal length (f/10 focal ratio) delivers high magnification capabilities, perfect for observing lunar craters, planetary features, and closer deep-sky objects.

• Mount: Equipped with a stable alt-azimuth mount, designed for easy and intuitive manual tracking of objects across the sky.

• Tripod: Sturdy aluminium tripod provides a stable platform for observation, minimizing vibrations.

• Eyepieces: Includes 1.25" H-20mm, H-12mm, and SR-4mm eyepieces, offering varied magnification options for different viewing targets.

• Barlow Lens: A 3x Barlow lens triples the magnification of any inserted eyepiece, greatly extending the telescope's power.

• Finderscope: LED viewfinder assists in quickly locating and centering celestial objects.

• Intended Use: Ideal for beginners and intermediate stargazers interested in observing the Moon, planets, and brighter deep-sky objects, as well as for terrestrial viewing.

WARRANTY

This product is covered by a 2-year global warranty that includes defects in materials and manufacturing under normal use.

IN THE BOX

• National Geographic 90/900 Refractor Telescope Optical Tube Assembly (OTA)

• Alt-Azimuth Mount

• Aluminium Tripod

• H-20mm Eyepiece (1.25")

• H-12mm Eyepiece (1.25")

• SR-4mm Eyepiece (1.25")

• 3x Barlow Lens

• Moon Filter

• LED Viewfinder

• Star Map