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Chapter 4 AUTOMATIC GOTO SLEWING
Automatic Go-To Slewing
The principle of the automatic Go-To Slewing
Startup Procedure
The moon and bright planets are found readily in the night sky as you can locate their positions with ease. However, less bright planets, nebulae and star
clusters are dim and mostly invisible with the unaided eye. Even if you know where these dim and blurred objects are in the night sky, it often takes time
and effort to look for them. The automatic Go-To slewing with the STAR BOOK TEN will assist you in locating celestial objects easily and quickly.
It appears that the positions of stars relative to each other in the sky are all but fixed due to their extrmemly long distances from us on the earth. Because
of this, the star‘s positions on celestial spheres can be measured on star maps using celestial coordinates. The right ascention of the celestial spheres
corresponds to latitude and the declination corresponds to altitude on the geograhic maps. The STAR BOOK TEN acts as a celestial navigator like your
car navigation system.
Celestial Object
Celestial Equator
Declination (Degree)
Celestial Pole
Polaris
Equinox
Ecliptic
Right Ascension (Hour Angle)
Point the mount toward the north celestial pole in the northern hemisphere (the south in the southern
hemisphere) so that the R.A. axis on the mount is parallel with the axis of the celestial sphere in your
observing location.
Loosen the clamp levers on the R.A and declination axes and move the telescope to the home position
by hand. Point the optical tube to due west horizon in the northern hemisphere (due east horizon in the
southern hemisphere) to fix the home position.
Select two stars from the list in the STAR BOOK TEN to align the telescope. The more alignment stars
you select, the more centrally located the target objects will be in your telescope‘s field of view.
Choose your target on the screen of the star chart or from the database of extensive celestial objects in
the menu and slew the telescope to your target. Enjoy your observing!
Locating the Mount
Setting Home Position
Two Star Alignment
Automatic GOTO slewing
