Vixen Starbook-S User Manual page 54

Page 48
Deleting all data of the orbital elements
You can delete all data of the orbital element at a time in the initial setting screen just after you
turn on the SARBOOK-S.
(1) Turning on the STARBOOK-S and choose Delete all comet data with the keys and press
Select to enter. The dialog box on the right will appear on the screen.
(2) Choose YES with the keys and press Select to delete.
Displaying the comets
With the installation of the comet orbital elements, you can display the comet on the screen of the
STARBOOK-S and slew to the comet automatically. You can set the comets so as to show or to
hide them on the star chart.
In the Comet Menu screen, choose the comets you wish to display on the star chart. Move the
cursor to the comets and turn the mark to black with the
keys to display.
Note:
The comet will not appear on the screen if the "Hide" is marked with black in the dialog box of the
on the Comet screen.
The blue line from the comet shows its ion tail and the white line shows its dust tail. The length
and direction of the both tails are based on forecasts. It may differ from the actual view of the
comet.
There are uncertainties in the orbital elements of comets and the comets may reveal unexpected
motion. It may fail to bring the target comet at the center of the field of view of your telescope.
54