Meade LNT Instruction Manual download pdf (Page 27)

■ Train Drive: Trains the Altitude and Azimuth motors to locate objects with more precision.

If you are experiencing any problems with pointing accuracy, follow the procedure

described in APPENDIX D: TRAINING THE DRIVE, page 38, to insure accurate pointing

and tracking.

■ Tracking Rate: Changes the speed at which the telescope tracks targets in the sky.

a. Sidereal: The default setting for Autostar; sidereal rate is the standard rate at which

stars move from East to West across the sky due to the rotation of the Earth.

b. Lunar: Choose this option to properly track the Moon over long observing sessions.

c. Custom: Allows entry of user-defined tracking rates.

■ Reverse L/R: Reverses the functions of the Left and Right Arrow keys (

i.e.

, the Right key

moves the telescope to the left

■ Reverse UP/DOWN: Reverses the functions of the Up and Down Arrow keys (

i.e.

, the Up

key moves the telescope down

■ Calibrate Sensors: This menu allows you to improve your telescope's pointing accuracy

to alignment stars. It calibrates to correct slight mechanical misalignment due to transport,

vibration, or aging. It is recommended that calibration be performed after the LNT Module

batteries are changed (see page 39 for more information).

When this menu is selected, the telescope slews to Polaris. AutoStar then prompts you to

center Polaris and to press ENTER. AutoStar uses the position of Polaris to fine tune the

position of North and also for detecting level.

■ Quiet Slew: Sets the maximum slew rate to 1.5° for quieter operation.

■ 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.

■ Min AOS (Acquisition of Signal): Allows you enter a value in degrees. This value repre-

sents 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 37, for more information

about satellites.

■ 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.

■ 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 cen-

tered 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:

■ 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 dis-

plays. Use this option when you move to a different geographic location.

■ 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 dis-

plays. Then choose the desired city in the same manner.

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.

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Meade LNT Instruction Manual Page 27

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