Meade LNT Instruction Manual download pdf (Page 17)

Verify that AutoStar is properly connected to your telescope. See “HOW

O ASSEMBLE

YOUR TELESCOPE,”

page 13.

3. Flip the telescope power switch to the ON position.

The AutoStar screen is activated and a copyright message displays briefly, followed by a

short beep. Then AutoStar takes a few moments to start up the system.

4. A message displays that warns not to look at the Sun. At the end of this message, press

the key prompted by AutoStar to signify that the message has been read and understood.

The Arrow keys are now activated. Press the Arrow keys (5,

Fig. 2

) to sle

w (move) the

telescope up, down, right, or left.

6. Press a Number key (

8, Fig. 2) to change the telescope’s slew speed. See "SLEW

SPEEDS," below, for more information.

7. Use SmartFinder (

17, Fig. 1) and/or the viewfinder (1, Fig. 20) to locate an object and prac-

tice using the AutoStar’s Arrow keys to center the object in the telescope’s field of view.

8. Use the telescope’s focus knob (8, Fig. 1) to bring the object into focus.

Slew Speeds

AutoStar has nine slew speeds that are directly proportional to the sidereal rate and have been

calculated to accomplish specific functions. Pressing a Number key changes the slew speed,

which is shown for about two seconds on AutoStar’s display.

The nine available speeds are:

Number Key 1 = 1x = 1 x sidereal (0.25 arc-min/sec or 0.004°/sec)

Number Key 2 = 2x = 2 x sidereal (0.5 arc-min/sec or 0.008°/sec)

Number Key 3 = 8x = 8 x sidereal (2 arc-min/sec or 0.033°/sec)

Number Key 4 = 16x = 16 x sidereal (4 arc-min/sec or 0.067°/sec)

Number Key 5 = 64x = 64 x sidereal (16 arc-min/sec or 0.27°/sec)

Number Key 6 = 128x = 32 arc-min/sec or 0.5°/sec

Number Key 7 = 1.5° = 90 arc-min/sec or 1.5°/sec

Number Key 8 = 3° = 180 arc-min/sec or 3°/sec

Number Key 9 = Max = 390 arc-min/sec or 6.5°/sec)

Speeds 1, 2, or 3: Best used for fine centering of an object in the field of view of a higher power

eyepiece, such as a 12mm or a 9mm eyepiece.

Speeds 4, 5, or 6: Enables centering an object in the field of a low-to-moderate power

eyepiece, such as the standard Super Plössl 26mm.

Speeds 7 or 8: Best used f

or rough center

ing of an object in the e

epiece

Speed 9: Moves the telescope quickly from one point in the sky to another

Observe the Moon

Point your telescope at the Moon (note that the Moon is not visible every night) and practice

using the Arrow keys and the slew speeds to view different features. The Moon contains many

interesting features, including craters, mountain ranges, and fault lines. The best time to view

the Moon is dur

ing its crescent or half phase

Sunlight str

es the Moon at an angle during these

per

iods and adds a depth to the view. No shadows are seen during a full Moon, causing the

overly bright surface to appear flat and rather uninteresting. Consider the use of a neutral

density Moon filter when observing the Moon. Not only does it cut down the Moon's bright glare,

ut it also enhances contr

ast, pro

viding a more dr

amatic image

NOTE:

Do not look through the

telescope's eyepiece or

vie

wfinder while it is

rapidly moving. Children

should always have

adult supervision while

observing.

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Meade LNT Instruction Manual Page 17

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