Bedienungsanleitung Meade ETX-90AT (Seite 26 von 60) (Englisch)

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WARNING!

Never use

your ETX

Telescope to

look at the Sun! Looking

at or near the Sun will

cause instant and

irreversible damage to

your eye. Eye damage is

often painless, so there is

no warning to the

observer that damage has

occurred until it is too

late. Do not point the

telescope or its viewfinder

at or near the Sun. Do not

look through the telescope

or its viewfinder as it is

moving.

Children should

always have adult

supervision while

observing.

IMPORTANT NOTE FOR ALL ALIGNMENT-BASED OPERATIONS:

Only use the Arrow keys to move the telescope during the Identify

procedure. Do not loosen the telescope locks or move the base or the

alignment will be lost.

1. When a desired object is visible in the eyepiece, keep pressing MODE until the

“Select Item: Object” menu is displayed. Press ENTER to select this menu.

2. Scroll through the Object menu options until the “Object: Identify” screen appears.

3. Press ENTER. Autostar searches the database for the identity of the object being

observed.

4. If the telescope is not directly on an Autostar database object, the nearest

database object is located and displayed on the screen. Press GO TO and the

telescope slews to that object.

Browse allows you to search the database for objects with certain parameters, much

like a search engine. "Edit Parameters" lets you set various parameters for the search,

such as: Object Type, Minimum Elevation, Largest, etc. Once you have set the

parameters of the search, select "Start Search" and press ENTER. Autostar will

display the results of the search. See page 39 for more information.

Event Menu

The Event menu provides access to dates and times of astronomical events. The

Event database includes:

Sunrise and Sunset calculates the time that the Sun rises or sets on the current date.

Find rise and set times for other dates by entering a new date into the “Setup: Date”

menu. See

DATE, page 28 and also see ETX TIPS, page 23.

Moonrise and Moonset calculates the time that the Moon rises or sets on the current

date. Find rise and set times for other dates by entering a new date into the “Setup:

Date” menu. See

DATE, page 28 and also see ETX TIPS, page 23.

Moon Phases displays the date and time of the next Full, New, 1st Quarter and 3rd

Quarter Moon.

Meteor Showers provides information

on upcoming meteor showers, such as the

Perseids, the Leonids, etc. Also lists the dates of the showers and when they reach

maximum.

NOTE: Meteors are fast moving objects that cover large areas of the sky

and are usually best observed with the naked eye.

Solar Eclipse lists upcoming Solar Eclipses, including the date and type (total,

annular or partial) of eclipse and the location and time of the first and last contacts of

the Moon's shadow. Use the Scroll Up and Down keys to display the available data.

Remember, never use a telescope to look at the Sun! See

WARNING! to the left.

Lunar Eclipse lists upcoming Lunar Eclipses, including the date and type (total,

partial, penumbral) of eclipse. Use the Scroll Up and Down keys to display the

available data.

Min. (Minimum) of Algol is the minimum brightness of the dramatic eclipsing binary

star system, Algol. It is relatively close at a distance of 100 light years. Every 2.8 days

during a 10-hour period, Algol undergoes a major change in apparent magnitude as

one of the two stars passes behind the other. The combined magnitude of the two

stars thus dips from +2.1 to a minimum of +3.4 halfway through the eclipse as the

second star is hidden. Autostar calculates minimum magnitude time at mid-eclipse.

Autumn and Vernal Equinox calculates the time and date of the fall or spring

equinox of the current year.

Winter and Summer Solstice calculates the time and date of the winter or summer

solstice of the current year.

Glossary Menu

The Glossary menu provides an alphabetical listing of definitions and descriptions for

common astronomical terms and Autostar functions. Access directly through the

Use the Event menu

to look up dates of various

astronomical events, such

as sunrises and sunsets,

eclipses, moon phases,

meteor showers, equinoxes

and solstices...

...and not just for the

current date. Set any date,

past or future, when

initializing Autostar and you

can check the time for

other events.

Use the Glossary menu

to look up definitions of

astronomical terms and get

a description of Autostar

features.

Want to learn more about

using the Browse menu?

See page 39.

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