Orion ATLAS EQ-G User Manual download pdf (Page 13)

5. The hand controller’s LCD screen will show a safe solar

viewing warning message. Press the ESC button to con-

tinue.

Note: The GoTo hand controller’s LCD backlighting will

become dim and the illuminated buttons will turn off if left idle

for 30 seconds. Pressing any button will re-illuminate the hand

controller.

6. Enter your observing site’s longitude and latitude coordi-

nates. First enter the longitude coordinate and hemisphere,

followed by the latitude coordinate and hemisphere. Use

the numerical keypad to enter the digits, and use the left

and right directional buttons to move to the next digit. Use

the scroll buttons to choose W or E (for longitude) and N

or S (for latitude). If you do not know the longitude and

latitude coordinates of your viewing location, consult an

atlas or geographical map of your area. Press ENTER to

confirm your coordinates.

Note: Longitude and latitude coordinates must be entered

in degrees and arcminutes. If your map or atlas gives coor-

dinates in decimal values (i.e. latitude = 36.95 N) you must

convert into degrees and arcminutes (i.e. latitude 36.95 N =

latitude 36°57’ N).

Note: If a mistake is entered into the hand controller during

the initial setup procedure, press the ESC button to go back

to the previous screen.

7. Enter the time zone in which you are observing in hours

(see Appendix D) using the scroll buttons (+ for east of

Prime Meridian, - for west of Prime Meridian) and numeric

keypad. Use the left and right directional buttons to move

to the next digit. Press ENTER to confirm your choice.

8. Enter the date in mm/dd/yyyy format using the numeric

keypad. Use the left and right directional buttons to move

to the next digit. Press ENTER to confirm your choice.

9. Enter your current local time using the 24 hour clock for-

mat (example: 2:00PM = 14:00). Press ENTER to view the

time you entered. If the time is incorrect, press ESC to go

back to the previous screen. If the time is correct, press

ENTER again.

10. If the date entered in step 8 falls between March

and November, the hand controller will ask “DAYLIGHT

SAVING?” on the LCD screen. Use the scroll buttons to

select “YES” or “NO” to indicate if you are currently on

Daylight Savings Time or not, and press ENTER.

11. The hand controller will now display “Begin Alignment?”

Press 1 or ENTER to start the alignment procedure. Press

2 or ESC to skip the alignment and exit to the Main Menu.

You are now ready to begin the alignment procedure.

Alignment

In order for the GoTo hand controller to accurately locate and

point to objects in the sky, it must first be aligned on known

positions (stars). With the supplied information, the controller

can replicate a model of the sky and the movements of astro-

nomical objects.

There are three ways to align depending on your demand for

accuracy. If you are using the GoTo controller for the first time,

we recommend you begin with the three-star alignment. In

most cases, a three-star alignment produces the most accu-

rate alignment among the three methods. The description

below will lead you through a step-by-step procedure on how

to perform the three-star alignment.

Note: Before performing any of the alignment methods, be

sure your finderscope is well aligned with the telescope tube.

Figure 14. The telescope and mount in their “home” position

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Orion ATLAS EQ-G User Manual Page 13

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