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polaris 90 мм
Инструкция по эксплуатации Страница: 11

Meade polaris 90 мм Инструкция по эксплуатации онлайн [11/28] 159829

Meade polaris 114 мм Инструкция по эксплуатации онлайн [11/28] 159830

constellations of Orion, Virgo, and Aquarius)

is said to have a Declination of zero, shown

as 0° 0’ 0”.

All celestial objects therefore may be located

with their celestial coordinates of Right

Ascension and Declination.

LINING UP WITH THE CELESTIAL POLE

Objects in the sky appear to revolve around

the celestial pole. (Actually, celestial objects

are essentially “fixed” and their apparent

motion is caused by Earth’s rotation). During

any 24 hour period, stars make one complete

revolution about the pole, circling with the

pole at the center. By lining up the telescope’s

polar axis with the North Celestial Pole (or

for observers located in Earth’s Southern

Hemisphere with the South Celestial Pole),

astronomical objects may be followed, or

“tracked,” by moving the telescope about one

axis, the polar axis.

If the telescope is reasonably well aligned

with the pole very little use of the telescope’s

Declination flexible cable control is necessary.

Virtually all of the required telescope tracking

will be in Right Ascension. For the purposes

of casual visual telescopic observations,

lining up the telescope’s polar axis to within

a degree or two of the pole is more than

sufficient: with this level of pointing accuracy,

the telescope can track accurately by slowly

turning the telescope’s R.A. flexible cable

control and keep objects in the telescopic

field of view for perhaps 20 to 30 minutes.

POLAR ALIGNMENT OF THE EQUATORIAL

MOUNT

To line up the Meade Polaris German

TOO MUCH POWER?

Can you ever have too much power? If the type of

power you’re referring to is eyepiece magnification,

yes you can! The most common mistake of the

beginning observer is to “overpower” a telescope

by using high magnifications which the telescope’s

aperture and atmospheric conditions cannot

reasonably support. Keep in mind that a smaller,

but bright and well-resolved image is far superior

to one that is larger, but dim and poorly resolved.

Powers above 400x should be employed only under

the steadiest atmospheric conditions.

Equatorial mount with the celestial pole,

follow this procedure:

1. Slightly loosen the Azimuth lock (30) of the

Azimuth base, so that the entire telescope-

with-mounting may be rotated in a horizontal

direction. Rotate the telescope until it points

due North. Use a compass or locate Polaris,

the North Star, as an accurate reference to

North (See Fig. 8).

2. Level the mount with the horizon, if

necessary, by adjusting the heights of the

three tripod legs.

3. Determine the latitude of your observing

location by checking a road map or atlas.

Release the latitude lock (9) and tilt the

telescope mount so that the star “Polaris”

Fig. 8

Polaris

Little Dipper

Big Dipper

Cassiopeia

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

Meade polaris 90 мм Инструкция по эксплуатации онлайн [11/28] 159829

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