Manual Celestron Advanced VX (page 17 of 36) (English)

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I 17

• To slew to the object displayed, press ENTER.

• To see the next tour object, press the DOWN key.

Identify Button

Pressing the IDENTIFY button will search the mount’s da-

tabase catalogs and display the name and angular distances

to the nearest matching objects from the telescope’s current

location. This feature can serve two purposes. First, it can be

used to identify an unknown object in the ﬁeld of view of your

eyepiece. Additionally, Identify Mode can be used to ﬁnd

other celestial objects that are close to the objects you are

currently observing.

For example, if your telescope is pointed at the brightest

star in the constellation Lyra, choosing Identify will no doubt

return the star Vega as the star you are observing. However,

the Identify feature will also search its NGC and Solar

System databases and display any planets or Deep Sky

objects that are close by. In this example, the Ring Nebula

(M57) would display as being approximately 6° away.

The brightness and proximity of the objects displayed can be

deﬁned by the user using the Identify Filter under Telescope

Setup.

Direction Buttons

The hand control has four direction buttons in the center

of the hand control which control the telescope motion in

altitude (up and down) and azimuth (left and right). The

telescope can be controlled at nine different speed rates.

1 = 2x 6 = .3° / sec

2 = 4x 7 = 1° / sec

3 = 8x 8 = 2° / sec

4 = 16x 9 = 4° / sec

5 = 32x

Motor Speed Button

Pressing the MOTOR SPEED button (12) allows you

to instantly change the speed rate of the motors from

high speed slew rate to precise guiding rate or anywhere

in between. Each rate corresponds to a number on the

hand controller key pad. The number 9 is the fastest rate

(approximately 4° per second, depending on power source)

and is used for slewing between objects and locating

alignment stars. The number 1 on the hand control is the

slowest rate (2x sidereal) and can be used for accurate

centering of objects in the eyepiece. To change the speed

rate of the motors:

• Press the MOTOR SPEED key on the hand control.

The LCD will display the current speed rate.

• Press the number on the hand control that corresponds

to the desired speed.

The hand control has a “double button” feature that allows

you to instantly speed up the motors without having to

choose a speed rate. To use this feature, simply press the

arrow button that corresponds to the direction that you want

to move the telescope. While holding that button down,

press the opposite directional button. This will increase the

speed to the maximum slew rate.

When using the UP and DOWN buttons on the hand control,

the slower slew rates (6 and lower) move the motors in the

opposite direction than the faster slew rates (7- 9). This is

done so that an object will move in the appropriate direction

when looking into the eyepiece (i.e., pressing the up arrow

button will move the star upwards in the ﬁeld of view of the

eyepiece). However, if any of the slower slew rates (rate 6

and below) are used to center an object in the starpointer,

you may need to press the opposite directional button to

make the telescope move in the correct direction.

Help Button

In future ﬁrmware updates, this button will offer troubleshooting

tips. For your convenience, it currently functions as a shortcut

to the Messier Catalog.

Menu Button

The Advanced VX mount contains many user-deﬁned

setup functions designed to give the user control over the

telescopes many features. All of the setup and utility features

can be accessed by pressing the MENU key and scrolling

through the options below.

Tracking Menu

Tracking Mode – This allows you to change the way the

telescope tracks depending on the type of mount being used

to support the telescope. The telescope has three different

tracking modes:

• EQ North – Used to track the sky when the telescope is

polar aligned in the Northern Hemisphere.

• EQ South – Used to track the sky when the telescope

is polar aligned in the Southern Hemisphere.

• Off – When using the telescope for terrestrial (land)

observation, the tracking can be turned off so that the

telescope never moves.

Tracking Rate – In addition to being able to move the

telescope with the hand control buttons, your telescope

will continually track a celestial object as it moves across

the night sky. The tracking rate can be changed depending

on what type of object is being observed:

• Sidereal – This rate compensates for the rotation of the

Earth by moving the telescope at the same rate as the

rotation of the Earth, but in the opposite direction. When

the telescope is polar aligned, this can be accomplished

by moving the telescope in right ascension only.

• Lunar – Used for tracking the Moon when observing the

lunar landscape.

• Solar – Used for tracking the Sun when solar observing

with the proper ﬁlter.

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