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

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Reverse L/R: Reverses the functions of the Left and Right Arrow keys ( i.e., the Right key
moves the telescope to the left).
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Reverse UP/DOWN: Reverses the functions of the Up and Down Arrow keys ( i.e., the Up
key moves the telescope down).
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Reverse L/R: Reverses the functions of the Left and Right Arrow keys ( i.e., the Right key
moves the telescope to the left).
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Reverse UP/DOWN: Reverses the functions of the Up and Down Arrow keys ( i.e., the Up
key moves the telescope down).
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Quiet Slew : Sets the maximum slew rate to 1.5° for quieter operation.
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Max Elevation : Allows you to enter a value in degrees that sets a limit as to how far the
optical tube can swing upward during a programmed slew. (Note that it does not prevent
you from performing a manual slew past this limit.) This is useful when you have a camera
or other peripheral attached to the telescope—you can prevent it from striking the
telescope base.
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Min AOS (Acquisition of Signal): Allows you enter a value in degrees. This value
represents the altitude at which your telescope begins to slew when acquiring a satellite
track. This is useful when you are observing satellites, but a tall tree or building is
obstructing the telescope. For example, you might begin to track the satellite at 15° altitude,
instead of 5°. See
OBSERVING SATELLITES,
page 33, for more information about satellites.
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Calibrate Motor : If the telescope motors appear to have a problem, use this option to
retest the motors before performing a Reset. This option is also used if an AutoStar unit is
moved between telescopes, to match AutoStar to the new telescope. To calibrate the
motors, select this option and press ENTER.
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Smart Drive : Allows you to perform periodic error correction (PEC) on the R.A. worm gear
and can only be used with polar mounted telescopes. Must be performed with a high
powered reticle (
eg. Meade Plössel 9mm illuminated reticle eyepiece P/N 07068). PEC
Training for the the LX90 telescopes will take about 8 minutes. See
PERIODIC ERROR
CORRECTION
, page 53 for more information.
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High Precision: If High Precision is turned on, when looking for a faint celestial object (
i.e.,
a nebula or galaxy), AutoStar first slews to a nearby bright star and displays “ENTER to
Sync”. Center the star in the eyepiece, then press ENTER. At that point the telescope has
a high precision alignment to that part of the sky and it then slews to the object that was
originally requested.
Targets switches between Astronomical targets and Terrestrial targets. If “Astronomical” is
selected, the telescope tracking motor is activated and any object you observe will remain
centered in the eyepiece. If “Terrestrial” is selected, the tracking motor is turned off. To learn how
to track an object automatically, see page 18.
Site provides access to several options including:
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Select : Displays the currently selected observing site. Use the Scroll keys to cycle through
all available sites (see
ADD
below). Press ENTER when the site you wish to select
displays. Use this option when you move to a different geographic location.
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Add : Allows you to add new observing sites to the database (up to six sites may be stored).
Scroll through the list of Countries/States. Press ENTER when the site you wish to add
displays. Then choose the desired city in the same manner.
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Delete : Deletes a stored site from the database.
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Edit : Edits a selected site, including: the name, latitude, longitude, and time zone. Time
Zone refers to the Greenwich Mean Time (GMT) time zone shift. Users West of Greenwich,
England use “-” hours, East of Greenwich use “+” hours. For the United States, look up the
time zone shift in the table at left.
NOTE: AutoStar compensates for daylight savings time, if selected. See
SETUP