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2. Press the MODE key twice. The display will look like
Display 8, but with random LOCAL and SIDE times.
Display 12
9. Press and hold the ENTER key until the Keypad Hand
Controller beeps. The display will look like Display 13, with
the blinking cursor over the first number.
Display 8
3. Press and hold the ENTER key until the Keypad Hand
Controller beeps (display like Display 9).
DATE = 11/28/97
DATE = 11/28/97
DATE = 01/15/98
→TELESCOPE
OBJECT LIBRARY
→LOCAL = 16:25:00
SIDE = 21:38:02
Hours from GMT:
+ 0 8
→LOCAL = 11:24:30
SIDE = 21:38:02
→LOCAL = 11:24:30
SIDE = 21:38:02
Display 9
4. Using the number keys, enter the current local time to within
5 seconds. (Remember, 4:25:00 P.M. is 16:25:00 in the 24
hour format.) Corrections can be made by moving the
flashing cursor using the "W" and "E" keys. The display
should look like Display 10.
Display 13
10. Use the number keys to enter the current date. The display
should look like Display 14. Use the "W" and "E" keys to
move the blinking cursor left and right to correct any
mistakes.
Display 15
3. Press the ENTER key to select the TELESCOPE functions.
The display should look like Display 16.
Display 10
5. Press the ENTER key when the time is correct. The display
will change to Display 11.
Display 11
6. Enter the Greenwich Mean Time (GMT) time zone shift.
(This procedure is a lot easier than it sounds.) For users in
the United States, look up your time zone in the table below
to find the GMT time zone shift.
TIME ZONE Standard Time Daylight Savings Time
Eastern + 5 Hours + 4 Hours
Central + 6 Hours + 5 Hours
Mountain + 7 Hours + 6 Hours
Pacific + 8 Hours + 7 Hours
Hawaii + 10 Hours + 9 Hours
For example: For the Pacific Time Zone on Daylight Savings
Time, the GMT time zone shift is +7 hours.
7. Use the number keys to enter the GMT time zone shift
determined from the table above. Press ENTER when
done; the display will go back to Display 8. If you are using
the CDS East of Greenwich U.K., then you must enter a -
(minus) GMT time zone shift by moving the blinking cursor
backwards in the display with the "W" key and then pressing
the NEXT key. The + (plus) sign will change to - (minus).
NOTE: The time keeping mechanism in the CDS is a standard
clock chip. It may be necessary to confirm the time when first
starting an observing run. However, once the system is aligned
and the telescope knows its exact location in the sky, this
information is used to calculate a very accurate sidereal time.
8. Press the ENTER key. This will select the DATE display
(Display 12), with a random date showing.
Display 14
11. Press the ENTER key when the date is correct.
After you press the ENTER key, the Keypad Hand Controller will
display “Updating planetary data”. The position of the planets
depends on the date, so anytime the date is changed, the planet
positions are recalculated.
This is all the information the CDS needs to make use of all its
features. The next steps actually align the telescope with the
night sky.
3) Telescope and CDS Alignment.
After the basic information has been entered into the system, the
CDS is ready for use. With a telescope that has been properly
assembled and balanced (as per the telescope's instruction
manual), you are ready to begin. Following these steps:
1. Face the field tripod leg (1), Fig. 7, that is centered under
the Power Panel, so that the LXD mount points to the
approximate North or South Pole star position in the sky
(using a simple hand held compass may help). Then, use
the Bubble Level located on the base of the LXD mount to
level the telescope.
2. Turn "On" the CDS electronics. After a few seconds (when
the self-diagnostic test is complete) the display will look like
Display 15.
→1) SITE
2) ALIGN
Display 16
4. Press the NEXT key to move the arrow to the lower line
(see Display 17).