Overview

The orbs functionality in indi-allsky display the relative location of the Sun and Moon using one of three measurements:

• Local Hour Angle
• Azimuth
• Altitude

Sun altitude marks

The tick marks on the side represent the relative measurement of 0, -6, -12, and -18 degrees of altitude of the Sun for each mode. The larger mark indicates the target Sun altitude separating day and night time modes.

Local Hour Angle

The orbs on the image are rendered as if the straight lines on the image were a round clock. Top center is 12:00. When the sun reaches the meridian is the 12:00 position, local hour angle.

Azimuth

The orbs will be rendered as if the top center point of the image is 0 degrees azimuth. The azimuth is the the angular distance of an object from north/south from your local position on the surface of the Earth.

Altitude

The orbs are rendered on the right or left side of the image depending on if the Sun/Moon is increasing or decreasing in altitude, respectively. The altitude is relative to your position on Earth. The sides of the image represents +90 to -90 degrees. The orbs will rarely reach the very top or bottom

Options

Azimuth Offset

You can configure an offset for the azimuth to match the orientation of the camera. Only valid for Local Hour Angle and Azimuth modes.

Reverse Orb Motion

If the image is flipped, you may reverse the orb motion to match the image orientation. Only valid for Local Hour Angle and Azimuth modes.