Meade LX90-ACF Advanced Coma-Free, Инструкция по эксплуатации

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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.
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.
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!
at the bottom of the page.
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 Glossary menu or
through hypertext words embedded in AutoStar. A
hypertext word is any word in [ brackets ],
usually found when using the AutoStar Help function or when reading a scrolling message such
as a description of a planet or star. Press ENTER whenever a hypertext word is on screen and
AutoStar goes to the glossary entry for that word.
To access directly from the Glossary menu, use the Scroll keys to scroll through the alphabet.
Press ENTER on the desired letter. Scroll to the desired entry and then press ENTER to read
the description.
Utilities Menu
The Utilities menu provides access to several extra features within AutoStar, including a
countdown timer and an alarm. The Utilities functions include:
Timer selects a countdown timer. This feature is useful for functions such as astrophotography
and tracking satellites. See
OBSERVING SATELLITES
, page 33. To use the Timer, press ENTER,
then choose “Set” or “Start/Stop."
쩦
Set : Enter the time to be counted down, in hours, minutes, and seconds, then press ENTER.
쩦
Start/Stop : Activates the timer set previously. Use the Scroll keys to toggle between ON and
OFF. When ON is displayed, press ENTER to activate the timer. When the timer runs out, four
beeps sound and the timer is deactivated.
Alarm selects a time for an alarm signal as a reminder. To use the Alarm, press ENTER, then
choose “Set” or “Start/Stop”.
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.
Use the Utilities
menu to perform
many of AutoStar’s
useful features, such
as setting an alarm,
adjust the display
contrast, calculate the
best eyepiece for
viewing an object, set
up your own landmark
survey, and so forth.
WARNING!
Never use a Meade
®
LX90 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 at or near the Sun. Do not look through
the telescope or viewfinder as it is moving. Children should always have adult supervision while observing.