Meade LX200R Manual de instrucciones descargar pdf (Pagina 15)

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Speed Keys

(SLEW, FIND, CENTER, and GUIDE)

The SLEW, FIND, CENTER, and GUIDE keys (6, Fig. 7) let you

set the rate of movement (slew) speed in the drives of the LX200,

as activated by the N,S,E, and W keys. The speed-indicator

illuminated LED beside the rate key that you press indicates the

selected rate. The speeds are SLEW (4° per second), FIND (1°

per second), CNTR (16X sidereal rate), and GUIDE (2X sidereal

rate).

NOTE: Each slew speed drives the LX200 in all four directions,

except for GUIDE. The 2X sidereal speed in GUIDE does not

interrupt the R.A.tracking direction to make Easterly (for Northern

hemisphere) or Westerly (for Southern hemisphere) adjustments;

it will merely slow down the tracking drive to one half its normal

speed. However, the slower drive moves the image opposite of

the tracking direction, without disturbing the smooth drive action.

This perfo rmance is essential when you are taking

astrophotographs.

The SLEW, FIND, CENTER, and GUIDE keys also have numbers

(7, 4, 1, and 0, respectively). You will use the multiple function of

these keys when you edit a value. SLEW and FIND are also used

to set the fast focus speed for the electric focuser accessory

option, and CNTR and GUIDE set the slow focus speed. Other

special functions for the CNTR and GUIDE keys are discussed

below.

RET Key

Typically used for guiding the LX200 during an astrophotograph,

the RET key (5, Fig. 7) is used to change the brightness and

pulse rate of the optional corded-style illuminated-reticle

eyepiece. Pressing either the PREV or NEXT (up and down

arrow) keys while pressing the RET key alters the reticle-

brightness level up or down.

When guiding on very faint stars, you may find it helpful to pulse

the light from the LED so that the reticle crosshairs blink on and

off. You can adjust the reticle brightness as well as the pulse

rates. You can use three pulse rates, each with a one-second

pulse interval. Set the continuous-illumination control and pulse

rates by holding down the RET key and pressing one of the

following keys: GUIDE (100% on, no pulsing), CNTR (50% on,

50% off), MAP (25% on, 75% off), CNGC (10% on, 90% off).

FOCUS Key

The FOCUS key (9, Fig. 7) allows two-speed electric-focus

control of the optional Meade #1206 Electric Focuser (or

equivalent corded electric focusers, such as the Meade Model

#1200A). To activate, press either the SLEW or FIND key (for fast

focusing) or the CNTR or GUIDE key (for slow focusing), press

and hold the FOCUS key, and then press and hold the PREV or

NEXT keys for near and far focus.

MAP Key

The MAP key (11, Fig. 7) turns on and off the red LED flashlight,

which is located at the top of the keypad. The deep red LED light

will protect your night vision while you search for an accessory or

examine a star chart.

Object Keys

(M, STAR, and CNGC)

The M (Messier objects), STAR (stars and planets), and CNGC

(Computerized New General Catalog) keys (10, Fig.6) allow

direct access to the LX200’s object library any time that you are

not editing a value, setting a parameter, or selecting a file menu.

Use the object keys when you are at a top level of a mode. After

you press one of these keys, the keypad display cursor blinks. It

then lets you enter the catalog number for objects listed in the

library (see

APPENDIX C

). After you enter the catalog number,

press the ENTER key. To see the entered object, press the GO

TO key.

The telescope has several object libraries; access them with the

STAR and CNGC keys. When you press the STAR or CNGC

keys, the display shows which object library you are currently in,

and it waits for a number entry. To switch to a different library,

press the ENTER key instead of entering a number.

The keypad display shows a menu of libraries available. Move the

cursor to the desired library and press ENTER to select. The

telescope remembers the database that you last accessed. Each

time you press the STAR or CNGC keys, the same object

database displays on the first line of the keypad display.

PREV AND NEXT Keys

The PREV key (12, Fig. 7) and NEXT (up and down arrow) key

(12, Fig. 7) move the display LCD arrow up and down the menu

files and menu file options so you can select an option. Use these

keys also to adjust the RET brightness range or to activate the

electric focuser. PREV and NEXT also work to select the objects

from the object library when you use START FIND.

THE LX200 POWER PANEL

The power panel has a power switch and LED indicators showing

power on with a current ammeter to show power draw. The power

panel has all the connectors for the AC or DC power input, the

DEC motor, and the keypad. There are connectors designed to

accept optional accessories, such as the following:

CCD autoguiding camera

Optional Meade field de-rotator

Meade #1206 Electric Focuser

illuminated-reticle eyepiece.

Fig.8: 16” LX200 Power Panel. (1) Current (mAx 300) ammeter; (2) RS-232 port; 3) Field de-rotator port; (4) Focuser port; (5)

Reticle port; (6) Keypad port; (7) ON/OFF switch, (8) 12v DC output (fan);

(9) 18v DC power port; (10) CCD port; (11) DEC motor port.

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