Meade LX200R Manual de instrucciones descargar pdf (Pagina 12)

- 12 -

c. Loosen the R.A. lock-knob (2, Fig. 5) and rotate the

telescope so that the R.A. Vernier pointer (4, Fig. 5) and

the Hour Angle (H.A.) pointer (5, Fig. 5) are approximately

in line with each other. This orients the fork arms parallel

to the power panel (10, Fig. 1). Lock the R.A. lock-knob (2,

Fig. 5).

Steps (1) and (2) are not required for the telescope to work;

an approximation is sufficient. The telescope has some illegal

positions (places where it will not go), and these two steps

insure proper operation.

d. Turn the telescope on. After a few seconds (after the

diagnostic self- test is complete), the display looks like

Display 15.

Display 15

e. Press the ENTER key. This selects the TELESCOPE

functions. The display should look like Display 16.

Display 16

f. Press the NEXT key. This moves the arrow to the lower line

(see Display 17).

Display 17

g. Press the ENTER key to select the ALIGN function. The

display looks like Display 18. (If the display looks like

Display 19, with a checkmark next to ALTAZ, go to step 9.)

Display 18

h. Press the ENTER key to activate the ALTAZ mode. The

keypad hand controller will beep and display a checkmark

next to the ALTAZ (see Display 19).

Display 19

i. Press the ENTER key to use the checked mode (ALTAZ).

The keypad hand controller display look likes Display 20.

Display 20

j. Press 1 to select Star. The display screen looks like

Display 21.

Display 21

k. If you have not already leveled the telescope, do so now.

When the telescope is level, press ENTER. The display

looks like Display 22.

Display 22

l. This message simply reminds you what you should do

next. Press ENTER to show a display like Display 23.

Display 23

m. Using the monthly star charts (

A P P E N D I X B

) pick an

alignment star. Look at the chart for the current month and

face the direction indicated. The constellations shown are

easily found, even in the city. The charts are approximately

90° wide, with the top of the chart indicating straight up. If

the time is after 9:00 PM, use the next month’s chart. Once

you identify the constellation, pick any of the labeled stars

that is not within a 10° radius of overhead, but do not

choose Polaris. Polaris (the North Star) is shown for

reference only.

When you are aligning in ALTAZ, overhead stars can

confuse the LX200 because of an illegal position that

prevents the optical tube assembly from slewing past 90°

altitude to protect the viewfinder from hitting the fork arm.

The LX200 tracks an overhead object, but it does so by

moving higher in altitude up to the illegal position, then the

drive speeds up and moves 180° in azimuth so that the

optical tube assembly can now be lowered in altitude to

keep up with the overhead object.

Confusion arises because the LX200 does not know which

side of 180° of azimuth it is on. Similarly, Polaris presents

position problems in ALTAZ alignment because it is so close

to the North Celestial Pole. In this region of the sky, the lines

of R.A. are so close together that even the high-resolution

encoders of the LX200 can yield ambiguous data.

In our example of August 5, we would use the August chart,

face North, and look up about 45°. Cygnus is probably the

easiest constellation to recognize, and we will use the star

Deneb for our example.

Use the PREV and NEXT keys to scroll through the list of

alignment stars until the arrow is positioned on Deneb

(Display 24).

Display 24

n. Press the ENTER key to select Deneb. The keypad hand

controller displays a message (Display 25).

Display 25

o. Center the alignment star (Deneb in our example) in the

eyepiece of the telescope. You can move the telescope

either of the following ways:

Manually by loosening the Dec. lock-knob and R.A. lock

Electrically by using the N, S, W, and E keys.

If moving the telescope electrically, use the speed keys,

SLEW to get close, FIND to center in the viewfinder, and

CNTR to center the star in the eyepiece. When the star is

centered, press ENTER.

The telescope is now aligned and fully functional.

Press ENTER, then

pick align star

ACHERNAR

ACRUX A

The TELESCOPE and OBJECT L I B R A RY features are

accessed through a series of menus, which are shown on the

hand controller display.You can scroll up or down through the

list of choices by using the PREV and NEXT keys, and

selecting the indicated menu option with the ENTER key.

Menu choices that are shown in lower case letters are

unavailable in the current operating mode (LAND, ALTAZ, or

POLAR). If you try to select a lower-case menu option, the

hand controller emits three warning beeps. Three beeps

indicates an attempt to perform an invalid telescope

operation.

CASTOR A

DENEB

Center DENEB

then press ENTER

1) SITE

2) ALIGN

1) SITE

2) ALIGN

1) ALTAZ

2) POLAR

1) ALTAZ

2) POLAR

1 Star or

2 Star Alignment

Level base, then

press ENTER

TELESCOPE

OBJECT LIBRARY

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 59 60

Comentarios a estos manuales

Sin comentarios

Meade LX200R Manual de instrucciones Pagina 12

Comentarios a estos manuales

Relacionado con productos y manuales para Telescopios Meade LX200R