Meade 70AZ-AR instruction manual Optional Accessory, Star Charts

Tel70AZAR_5 3/28/07 10:09 AM Page 12

using the 25mm low-power eyepiece. The 25mm eyepiece delivers a bright,

10wide field of view and is the best to use for most viewing conditions. Use the

high-power 9mm eyepiece to view details when observing the Moon and planets. If the image become fuzzy, switch back down to a lower power. Changing eyepieces changes the power or magnification of your telescope.

By the way, you might have noticed something strange when you looked through your eyepiece. Although the image is right- side up, it is reversed. That means reading words can be a problem. But it has no affect on astronomical objects. If you wish to have a fully corrected image, check out Meade’s optional Erecting Prism in the Optional Accessory section.

Optional Accessory

Barlow lens: You can also change magnification by using a Barlow lens. The Barlow lens doubles the power of your telescope. See Fig. 6.

Fig. 6

eyepiece

barlow

diagonal mirror

Meade offers a complete line of eyepieces for your telescope. Most astronomers have four or five low-power and high power eyepieces to view different objects and to cope with different viewing conditions.

Objects move in the eyepiece: If you are observing an astronomical object (the Moon, a planet, star, etc.) you will notice that the object will begin to move slowly through the telescopic field of view. This movement is caused by the rotation of the Earth and makes an object move through the tele- scope’s field of view. To keep astronomical

objects centered in the field, simply move the telescope on one or both of its axes— vertically and/or horizontally as needed—try using the telescopes coarse and fine adjustment controls. At higher powers, astronomical objects will seem to move through the field of view of the eyepiece more rapidly.

Place the object to be viewed at the edge of the field and, without touching the telescope, watch it drift through the field to the other side before repositioning the

STAR CHARTS

Star charts and planispheres are useful for a variety of reasons. In particular, they are a great aid in planning a night of celestial viewing.

A wide variety of star charts are available in books, in magazines, on the internet and on CD Roms. Meade offers AutoStar SuiteTM software. Contact your local Meade dealer or Meade’s Customer Service department for more information.

Astronomy and Sky and Telescope magazines print star charts each month for up-to-the-minute maps of the heavens.

Looking at or near the Sun will cause irreversible damage to your eye. Do not point this telescope at or near the Sun. Do not look through the telescope as it is moving.