Starting Automatic Slewing - Vixen Starbook-S User Manual

Hint 11 Choosing a reference point near the zenith will make pointing accuracy worse. Due to
the nature of equatorial mounts, you won't be able to improve the pointing accuracy near the
zenith even if you complete a pair alignment perfectly. Use a low power eyepiece to search for a
celestial object in this case.
Hint 12 A variety of celestial objects can be used for reference points; the Moon, planets, nebulae
and star clusters. However, using a reference star (fixed star) is recommendable as it may be
difficult to determine the center of extended celestial objects like nebulae or star clusters.
Hint 13 Up to 19 alignment points may be used to raise slewing accuracy.

Starting Automatic Slewing

Automatic slewing becomes available as soon as a two point alignment (the first pair alignment) is
completed. Proceed to automatic slewing when you've finished them. Choose celestial objects
that you are interested in observing one by one. Refer to Hint 7 to Hint 13.
The following is an example for slewing to the planetary nebulaM57 (the Ring Nebula) in the
constellation Lyra (the Lyre).
(1) Zoom the star chart out on the screen by pressing the Zoom- key to find the target constellation
in a large area of the sky.
(2) In CHART MODE, locate your target (hereafter M57) in Lyra with the keys.
(3) Zoom the star chart in (along the way) by pressing the Zoom+ key to center M57 on the
crosshairs with the keys.
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