Celestron NexStar 11, Инструкция по эксплуатации

Страница: 17 / 71

17
Auto-Align
Alternatively, if you are observing at a location where it is difficult to establish a link with the proper satellites, AutoAlign will
allow the user to input the necessary information needed to align the telescope. After choosing AutoAlign and moving the
telescope into the north and level position, the NexStar will ask you to input first the date and time information then it will ask
for your location. Just like with GPS align, once this information is received, NexStar will automatically choose a bright
alignment star and automatically slew to it. Follow the steps below to AutoAlign the NexStar:
1. Once the NexStar is powered on , Press ENTER to begin alignment.
2. Use the Up and Down scroll keys (10) to select AutoAlign and press ENTER.
3. The telescope will then ask you to use the direction keys (3) to level the telescope tube and point the front of the
telescope towards north. North can be found by finding the direction of the North Star (Polaris) or by using a compass.
You do not need to point at the North Star, only the north horizon. Alignment only needs to be approximate, however
a close alignment will make the auto alignment more accurate. Once the telescope is in the north and level position,
press ENTER.
4. The hand control display will then ask for the following information:
Time - Enter the current local time for your area. You can enter either the local time (i.e.
08:00)
, or you can enter
military time (i.e.
20:00
).
•
Select PM or AM. If military time was entered, the hand control will bypass this step.
•
Choose between Standard time or Daylight Savings time. Use the Up and Down scroll buttons (10) to toggle
between options.
•
Select the time zone that you are observing from. Again, use the Up and Down buttons (10) to scroll through the
choices.
Date - Enter the month, day and year of your observing session. The display will default to the last entered date so
that only the necessary fields have to be changed.
If the wrong information has been input into the hand control, the UNDO button will act as a backspace allowing the user to re-
enter information.
5. Finally, you must enter the longitude and latitude of the location of your observing site. Use the table in Appendix C to
locate the closest longitude and latitude for your current observing location and enter those numbers when asked in the
hand control, pressing ENTER after each entry. Remember to select "West" for longitudes in North America and
"North" for latitudes in the North Hemisphere. For international cities, the correct hemisphere is indicated in the
Appendix listings.
Based on this information, the NexStar will automatically select a bright star that is above the horizon and slew towards it. Once
finished slewing, the display will ask you to use the arrow buttons to align the selected star with the cross hairs in the center of the
finderscope. If for some reason the chosen star is not visible (perhaps behind a tree or building) you can press UNDO to select
and slew to a different star. Once centered in the finder, press ENTER. The display will then instruct you to center the star in the
field of view of the eyepiece. When the star is centered, press ALIGN to accept this star as your first alignment star. After the first
alignment star has been entered the NexStar will automatically slew to a second alignment star and have you repeat this procedure
for that star. When the telescope has been aligned to both stars the display will read
Alignment Successful Alignment Successful Alignment Successful Alignment Successful
, and you are
now ready to find your first object.
If the wrong star was centered and aligned to, the NexStar display will read
Alignment Failed
Alignment Failed Alignment Failed
Alignment Failed
. Should this occur, the
display will automatically ask you to re-center the last alignment star and press ALIGN. If you believe that the wrong star may
have been centered (remember the alignment star will always be the brightest star nearest the field of view of the finder), then re-
center the star and press ALIGN. If you wish to try aligning on a different star, press UNDO and the NexStar will select two new
alignment stars and automatically slew to the first star.
Two Star Alignment
With the two-star alignment method, the NexStar requires the user to know the positions of only two bright stars in order to
accurately align the telescope with the sky and begin finding objects. Here is an overview of the two-star alignment procedure:
1. Once the NexStar is powered on, use the Up and Down scroll keys to select
Two Two Two Two- - - -Star Align Star Align Star Align Star Align
, and press ENTER.
2. The NexStar display will ask you to move the telescope tube until it is horizontal to the ground. To do this, use the
direction keys (3) to move the telescope until it is roughly level with the ground. Press ENTER.
Trouble
Shooting
Helpful
Hint