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12 I
FIRST TIME SETUP: CALIBRATE CENTER
The first time you use StarSense AutoAlign,
StarSense needs to know the center of the
telescope’s field of view in relation to its camera. This
one-time calibration process takes place inside the
camera and will not require you to
physically adjust the camera or your telescope. After
you complete the calibration, you’ll need to perform
the StarSense Auto alignment again.
Before calibrating the center position of your
telescope, a StarSense Auto (as outlined previous-
ly) or StarSense Manual alignment must first be
performed. This allows your telescope to establish
tracking and rough GoTo accuracy.
1. Press STARS. The first option shown is Named
for named stars. Press ENTER to proceed.
2. Choose a named star from the list. For best results,
choose a star that is at least magnitude 2 or less.
Look at the bottom of the LCD for Mag and a val-
ue, such as Mag : 1.8. Use the SCROLL up/down
buttons (also the 6 and 9 keys) to page through
the list of named stars. Press ENTER to slew to
the star. You do not need to know where the star
is located. StarSense will slew the telescope to
the star for you. It will be the brightest star in that
region of sky.
3. Attach your widest angle/lowest power eyepiece
to the telescope. Look through the eyepiece to see
if the star is there. If you do not see the star in your
eyepiece, proceed to step 4. If you can see the
star, skip to step 5.
The hand control is now in coarse centering mode,
which has a rapid slew rate.
4. Using the arrow keys on the hand control,
move the telescope until the star appears in the
eyepiece’s field of view. Instead of looking through
the eyepiece, try positioning your eye so that you
create a line of sight down the barrel of the exterior
of the telescope tube. Using this line of sight,
point the telescope roughly at the star, then make
fine adjustments by looking through the
eyepiece. Use the lowest power/widest-angle
eyepiece available.
5. Press ENTER, once the star is in the field of view
of your eyepiece.
The hand control is now in fine centering mode,
which has a slow slew rate.
6. Switch to a higher power eyepiece if available.
Center the star in the field of view. Make the final
centering movements UP and RIGHT. A small
checkmark will appear on the upper right screen
when this is done. (This corrects any errors due
to mechanical backlash in your mount.)
7. Press ALIGN.
StarSense will acquire a new image and note the
offset of the star in the camera. A message will
appear: Solution Found with a new center position
displayed in coordinates on the camera.
8. Press ENTER to accept the new center reference.
From this point forward, StarSense knows where
the center of your telescope’s field of view is in
relation to the camera.
Do not move the StarSense camera after the center
reference is established. As long as the camera does
not get bumped, jarred, or rotated, you can remove
the StarSense AutoAlign from your telescope and
reattach it without recalibrating.
After this step is complete, a message will appear
Realignment Required.
You can start a new alignment in the telescope’s
current position. There is no need to reset the
telescope to its home position.
9. Now, perform another StarSense Auto alignment.
When alignment is complete, your telescope is
ready to view objects and StarSense will accurately
locate them in your eyepiece’s field of view.
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