COMPUTERIZED TELESCOPE
6. Based on this information, the NexStar will automatically display the most suitable second
alignment star that is above the horizon. Press
ENTER
to automatically slew the telescope to
the displayed star. If for some reason you do not wish to select this star (perhaps it is behind
a tree or building), you can either:
> Press the
UNDO
button to display the next most suitable star for alignment.
> Use the
UP
and
DOWN
scroll buttons to manually select any star you wish from the entire list of
available stars.
Once finished slewing, the display will ask you to use the arrow buttons to align the selected star
with the red dot of the finderscope. Once centreed in the finder, press
ENTER
. The display will then
instruct you to centre the star in the field of view of the eyepiece. When the star is centred, press
ALIGN to accept this star as your second alignment star. When the telescope has been aligned to
both stars the display will read Align Success, and you are now ready to find your first object.
TWO STAR ALIGNMENT
With the two-star alignment method, the NexStar requires the user to know the positions of 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 (10) to select
Two-Star Align, and press
ENTER
.
2. Press
ENTER
to accept the time/site information displayed on the display, or press
UNDO
to enter new information.
3. The SELECT STAR 1 message will appear in the top row of the display. Use the Up and Down
scroll keys (10) to select the star you wish to use for the first alignment star. Press
ENTER
.
4. NexStar then asks you to centre in the eyepiece the alignment star you selected. Use the
direction arrow buttons to slew the telescope to the alignment star and carefully centre the star
in the finderscope. Press
ENTER
when centreed.
5. Then, centre the star in the eyepiece and press
ALIGN
.
HELPFUL HINT:
In order to accurately centre the alignment star in the eyepiece, you may wish to
decrease the slew rate of the motors for fine centreing. This is done by pressing the RATE key (11) on
the Hand Controller then selecting the number that corresponds to the speed you desire.
(9 = fastest, 1 = slowest).
6. NexStar will then ask you to select and centre a second alignment star and press the
ALIGN
key.
It is best to choose alignment stars that are a good distance away from one another. Stars that are
at least 40º to 60º apart from each other will give you a more accurate alignment than stars that
are close to each other.
Once the second star alignment is completed properly, the display will read Align
Successful, and you should hear the tracking motors turn on and begin to track.
16
Summary of Contents for NexStar 102GT
Page 1: ...INSTRUCTION MANUAL ...
Page 27: ...COMPUTERIZED TELESCOPE 27 NOTES ...
Page 29: ...MANUEL D INSTRUCTIONS TÉLESCOPE INFORMATISÉ ...
