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eBay£112.99Visit shop National Geographic 70-400 Refractor Telescope with Backpack 9101003
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The National Geographic 70-400 Refractor Telescope is designed for amateur astronomers and families seeking an accessible entry point into celestial observation. With its 70mm aperture and versatile magnification range of 20x to 300x, it offers clear views of the Moon, planets, and bright deep-sky objects. While its portable nature and included backpack make it excellent for travel, users should be aware that high-magnification settings require a very steady surface and patience to focus, as the field of view narrows significantly.
| Brand | National Geographic |
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Yes, the included zenith mirror corrects the orientation for terrestrial viewing, making it suitable for distant landscape or nature observation.
The adapter is designed to be adjustable and fits most standard smartphone sizes currently on the market.
Download the recommended astronomy app on your smartphone, attach your phone to the mount, and follow the app's calibration instructions to overlay constellation maps on your view.
The Barlow lens acts as a multiplier, effectively increasing the magnification of your eyepieces by a factor of three.
No, this is a manual refractor telescope and does not require electricity, though your smartphone will need a charge to use the AR apps.
Ensure you have removed all lens caps and use the focus knob slowly to adjust the image. Check that you are not using too much magnification for the atmospheric conditions.
Verify that your finderscope is properly aligned with the main telescope. Try using the lowest power eyepiece (longest focal length) to locate your target first.
Setting up the telescope starts by extending the aluminum tripod legs to a comfortable height, ensuring the feet are pressed firmly into the ground. Attach the telescope optical tube to the tripod head using the provided mount. Insert the zenith mirror into the drawtube, followed by the eyepiece of your choice. To maintain the optical quality, always replace the lens caps when the unit is not in use, and store it in the provided backpack to prevent dust accumulation on the glass surfaces. If the optics become dusty, use only a specialized microfiber lens cloth and optical cleaning solution to avoid scratching the coatings.
