Meade LX200R Manual de instrucciones descargar pdf (Pagina 17)

MODE FUNCTIONS

To view the separate modes within the LX200 system, press

the MODE key ( it is located between the ENTER and GO TO

keys at the top of the hand controller). You can customize the

operation of your LX200 to perform virtually any of your

observing requirements by entering and editing information in

the various modes of the system. All the critical information,

such as time, location, alignment type, and many other

functions, are kept in memory—even with the LX200 turned off.

You can set the following through the five modes of the LX200

computerized hand controller:

Type of alignment

Objects that you see

Location from which you observe

Tracking speeds of the drives

Clock and timing functions

Position information

Brightness of the backlit keypad

Once you have selected the desired mode, you can select the

individual file within the mode by pressing the PREV or NEXT

key (up or down arrow key), as shown in Fig. 7. This scrolls the

arrow up or down next to the file description. Although you will

be able to see only two menu selections at a time on the

keypad display, you will see more as you continue to press the

PREV and NEXT keys.

When you select the file, press the ENTER key to view the file

menu. To choose an individual menu, again use the PREV or

NEXT key to move the arrow up or down the file menu. To

explore a menu selection, again press the ENTER key. Some

modes offer options for a file menu selection; others are only for

entering data.

Whenever you wish to return to the main file heading in a

mode, press the MODE key; it will behave as an exit key.

Mode One:

TELESCOPE/ OBJECT LIBRARY

TELESCOPE/OBJECT LIBRARY is the mode to which the

LX200 defaults after the instrument completes its power-on

diagnostic self-test. The T E L E S C O P E / O B J E C T L I B R A R Y

mode is command central. It is where you select the way that

you want the LX200 to perform mechanically and where you

explore and select from its extensive library of stored objects.

To explore either the TELESCOPE menu file or the OBJECT

LIBRARY menu file, move the LCD arrow to the appropriate

selection by using the PREV or the NEXT key and press the

ENTER key.

1. TELESCOPE Menu File

Below are the various selections of the TELESCOPE menu file,

with illustrations of the individual menu files and file options.

a. SITE: The SITE menu option lets you enter up to four of your

favorite viewing locations in latitude and longitude. To

calculate celestial coordinates, the LX200 computer

compares the llatitude and ongitude that you entered to your

local time, GMToffset, and calendar date. Once entered, the

information is stored in the telescope’s internal memory; you

need not re-enter it. To enter new site information or to

change old information, see

QUICKSTART

, page 9.

You can choose any one of the four site options (or the

UNKNOWN site) at your convenience, without entering

latitude and longitude every time you use the LX200. Once

you have chosen the site, exit the SITE menu by pressing

the MODE key.

b. ALIGN: The Align menu selection of the TELESCOPE file

demonstrates the unique ability to transform the LX200 into

an altazimuth, celestial-tracking telescope, a polar-

equatorial celestial-tracking telescope, or a land spotting

scope with electric altazimuth movements within three

options. These options are ALTAZ, POLAR, and LAND.

When you enter correct local time, latitude, and longitude

(see

QUICKSTART

, page 9), you are ready to choose a type

of alignment. Do this by pressing the PREV or NEXT key to

move the arrow beside the desired option of ALTAZ, POLAR,

or LAND, and then pressing the ENTER key. The display

gives you instructions to walk you through the chosen

alignment type.

1. ALTAZ: ALTAZ (altazimuth) requires that you mount the

LX200 directly to the top of the field tripod (with the

power panel facing North) and adjust the leg extensions

of the tripod until the instrument is level. Then align on

one or two of the bright stars in the look-up table of 33

alignment stars.

This allows your LX200 to track in altitude and azimuth

simultaneously for visual observations, very brief (under

five minutes) exposure astrophotography, or CCD

imaging (longer exposures require the field de-rotator).

ALTAZ lets you access the object library as well as all

other telescope functions, including the Smart Drive. Full

instructions for using ALTAZ are in the

QUICKSTART

guide (page 9).

2. POLAR: POLAR allows you to use the 16” LX200

(mounted on a permanent pier set to your latitude) as an

equatorial telescope. With the LX200 powered up, the

POLAR file option selected, and the field tripod leveled,

the telescope should be adjusted so that the Dec. setting

circle (3, Fig. 1) is set to 90° (see Fig. 13), and the

telescope is rotated to the 00 hour angle (H.A.) position

in R.A. In this position, the viewfinder (Fig. 1) is upside

down, and the following all line up:

R.A. pointer (4, Fig. 5)

00 line of the R.A. setting circle (3, Fig. 5)

H.A. pointer (5, Fig. 5)

(If you do not start at the 00 H.A. position, the telescope

will point to the ground instead of the sky when the

keypad display chooses its second star.)

Press the ENTER key; the LX200 slews to the precise

offset of the Polar star in Dec. and R.A.

Aim the telescope at the Pole Star (Polaris, see

APPENDIX B

if the Pole Star is not visible). Center the

Pole Star in the eyepiece field using only the altitude and

azimuth adjustments on the pier. Press the ENTER key

again; the LX200 chooses, and slews to, a very bright

star that is overhead and can usually be seen in the field

of view of the viewfinder. Center the bright star using

only the R.A. and Dec. adjustments of the telescope

(either manually by loosening the locks only or

electrically); press ENTER. You can now access every

function of the LX200.

3. Refined Polar Alignment:Astrophotographers routinely

require polar alignments of the highest accuracy for the

finest guiding characteristics. Refine your initial polar

alignment by using the LX

2 0 0’s electronics with a slightly

d i fferent method in the POLAR menu option. Perform the

following steps at two or three 15-minute intervals. A t

each interval the telescope slews to the area where the

Pole Star should be centered in the optics. The Pole Star

may be somewhat off-center in the eyepiece.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 59 60

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