Meade LX20 Bedienungsanleitung PDF herunterladen (Seite 4)

6. Never wipe any optics especially the corrector plate; the anti-reflection coating is

very thing and will scratch easily. If your corrector plate becomes covered with dew,

alert your instructor or TA and we’ll use a heat gun to evaporate it off.

Alignment

The purpose of the following procedure is to allow the telescope drive motor to properly

track objects in the sky as the Earth rotates beneath them causing their apparent motion

across the sky. The LX200 telescopes are mounted in an altitude/azimuth (called alt-az

for short) format meaning that the telescope moves along vertical and horizontal axes. In

order for the LX200 to be able to track objects in the night sky properly, it must be able

to convert between altitude/azimuth coordinates along which the telescope moves and

Declination/Right Ascension coordinates along which celestial objects appear to move.

Thus, the LX200 must “know” its location, and the local date and time should all be pre-

programmed (by the instructor or TA). The LX200 will store this information with the

power off so there should be no need for you to change this information until we use the

telescopes at Wallace and thus need to change the location. In addition, the LX200 must

also “know” where certain positions in the sky are located. This is accomplished by

pointing the telescope consecutively at two stars with known positions and is called

alignment. The procedure is outlined below.

1. Turn on the telescope and after the self-diagnostic start-up test is complete the display

will give you two choices (TELESCOPE and OBJECT LIBRARY).

 Select Telescope (by pressing enter with the arrow pointing at Telescope).

2. Now your choices should be (SITE and ALIGN).

 Press the Next key to move the arrow to Align and select it using enter.

3. The display should had two choices again (ALTAZ and POLAR).

 If there is NO checkmark next to ALTAZ, press enter once and the keypad should

beep and a checkmark should appear next to ALTAZ. Now press enter again to

use the checked mode.

 If there is a checkmark next to ALTAZ, press enter to use the checked mode.

4. Your choices now should be (1 Star or 2 Star Alignment).

 Press next to move the arrow to 2 Star Alignment and then press enter to select it.

5. The display should now read (Level Base, then press ENTER)

 This is good time to double check that the base of the telescope is level and adjust

the legs of the tripod if necessary.

 When you press enter you will see (Press ENTER, then pick align star)

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Meade LX20 Bedienungsanleitung Seite 4