[ Grid(EQ) ]
Declination and right ascension grid.

[ Grid(HZ) ]
Altitude and azimuth grid.

[ Ecliptic ]
Ecliptic line.

[MilkyWay]
Milkyway.

[Constellation]
Constellation switch.
[Cns+Border]---The constellation borderline is displayed.

[Realistic]
[Realistic] usually.
When you turn this off...
- The stars are displayed as a circle.
- The sun, the moon, and the planet are displayed as a line.
- Twilight is not displayed.
- The horizon is not displayed.
If this is turned off, it becomes easy to see the occultation.

[StarName]
Star and objects name switch.

[Bayer]
Bayer(Greek character) switch.

[Flamsteed]
Flamsteed(Star number) switch.

Star Name, Bayer, Flamsteed
These are the same stars.
- Betelgeuse (Star Name)
- Alpha Orion (Bayer)
- 58 Orion (Flamsteed)

[Horizon]
Horizon switch.
The horizon display cannot be turned off on "Planetarium" screen.

[Twilight]
Daylight, twilight switch.
The star is seen though it is daytime when this switch is turned off.
Twilight is not displayed in "Star Atlas".

[GSC ON]
This changes if this button is clicked. [GSC ON] <-> [GSC OFF]
[GSC ON]---The GSC catalog star (18 million stars) is naturally displayed according to sensitivity and the scale.
[GSC OFF]---The GSC star is not displayed.
This button is effective only in Professional Edition.

[J2000]
This changes if this button is clicked. [J2000] -> [B1950] -> [DATE]
[J2000] ---2000 equinox
[B1950] ---1950 equinox
[DATE] ---Panel clock date equinox

[AtmRefract]
Atmospheric refraction correction switch.

[Image]
Nebula and cluster image switch.
10,000 images of the nebula and the cluster are included.
This button is effective only in Professional Edition.
Case where image is not displayed.
A too small nebula and cluster will not be displayed.
If you want to see it, you should right-click it and choose.
You can see the image on "Information".