National Geographic NG90EQ Why can’t I see anything through my telescope?, Made in China

Page 15

2) Why can’t I see anything through my telescope?

If you see only gray or black when looking through your telescope, even after searching for an object to view, it is very likely that you are using an eyepiece that is too powerful. To solve this problem always start with the lowest power eyepiece first, and only insert the higher-power eyepiece after you have located an object.

3) When I use my high-power eyepiece, everything looks much darker. Why?

As magnification in a telescope increases, brightness diminishes. Conversely, brightness increases when magnification is reduced. If an image appears too dark or unclear, use a lower-powered eyepiece. Views of small, bright objects are superior to those of large, dark, or blurry ones! Atmospheric conditions, air currents, as well as light and air pollution also affect viewing quality.

4)As I look through my telescope, objects in the sky appear to move. Why is that?

When you observe an astronomical subject through a telescope, the constant rotation of the Earth makes things appear to move across the viewing area. The equatorial mount provided with your telescope compensates for this by moving the main optical tube in a circular fashion, allowing you to follow and study celestial objects with a minimum of manual adjusting. If you would like to reduce this effect of movement to a minimum and observe the widest field of view, you should use lower-power eyepieces.

 

WARNING! CHOKING HAZARD –

!

Small parts. Not suitable for children

under 3 years.

 

Made in China

Manual Part # 260722

National Geographic’s net proceeds support vital exploration, conservation, research, and education programs.

Experience the National Geographic Channel. Call your cable or satellite provider for availability. Visit our website: www.nationalgeographic.com

2003 National Geographic Society. NATIONAL GEOGRAPHIC and Yellow Border are trademarks of National Geographic Society. All rights reserved.

15

Image 15
Contents NG90EQ Parts of your NG90EQ Telescope Introduction Assembly Page Page Finder Scope Alignment Equatorial Mount Word about the TWO Eyepiece Ports About Magnification Eyepiece Power Power With 3X Barlow LensUsing Your Telescope for Astronomical Viewing Right ascension tightening knob Azimuth locking knob Using Your Telescope for Terrestrial ViewingPlanets Care and Cleaning of OpticsWhat to Look for in the Night SKY MoonHow far can I see? Frequently Asked QuestionsMade in China Why can’t I see anything through my telescope?

NG90EQ specifications

The National Geographic NG90EQ is a premium-quality, fully-equipped equatorial telescope that provides amateur astronomers and enthusiasts with an exceptional viewing experience. This powerful telescope is ideal for both planetary observation and deep-sky tracking, making it a versatile addition to any stargazer's collection.

One of the standout features of the NG90EQ is its impressive 90mm aperture. This large lens collects ample light, allowing for bright and detailed images of celestial bodies. With a focal length of 900mm, the telescope offers a focal ratio of f/10, which is well-suited for high-magnification observation. This design ensures that users can easily spot planets like Jupiter and Saturn, as well as a variety of stars and nebulae.

The NG90EQ is equipped with an equatorial mount, an essential component for tracking celestial objects as they move across the night sky. This mount allows users to precisely align the telescope with the North Star, simplifying the process of finding and following planets and stars. The included setting circles further assist in locating astronomical objects, making it easier for newcomers to explore the night sky.

Another notable characteristic of the NG90EQ is its user-friendly design. The telescope features an adjustable, ergonomic tripod that provides stability and supports easy height adjustment. With an optical finderscope, users can quickly locate objects before zooming in with the main telescope. The scope also includes high-quality eyepieces, offering multiple magnification options for varied viewing experiences.

Durability is a key aspect of the NG90EQ, as it is built with robust materials that withstand regular use. Its compact design makes it portable, perfect for taking to dark sky locations away from city lights. The telescope's ease of assembly means that novice astronomers can set it up in a matter of minutes, encouraging exploration and learning.

In summary, the National Geographic NG90EQ telescope stands out due to its excellent optical performance, user-friendly features, and sturdy construction. With its equatorial mount and quality optics, this telescope is perfect for discovering the wonders of the universe, making it a fantastic choice for both beginners and seasoned astronomers alike.