altitude
The device that astronomers use to find the angle between the horizon and stars in the sky is called a sextant.
Sextant is used to measure the angle between any two visible objects.Its primary use is to determine the angle between a celestial object and the the horizon which is also know as objects altitude.
If the reference point and an object are both on the horizon then the angular distance to the object, relative to the reference point is simply the angle formed between the two rays from the observer to object and to the reference point. If either the object or reference point (or both) are not in the plane of the horizon then the appropriate rays are the projections of the rays from the observer onto the plane containing the horizon.
In a first angle projection, the object stands in between the observer and the plane of projection. In a third angle project, the object and the plane of projection is interchanged.
altitude
Altitude is the angle measured above the horizon.
the angle between an object in the sky and the horizon
The correct term is "zenith angle." It is the angle measured from the vertical direction (zenith) to the point directly above an observer. It is used to determine the position of an object in the sky relative to the observer's horizon.
The angle between the sun's position in the sky and the horizon is called the altitude of the sun. It is the measurement from the horizon to the center of the sun's disk. This angle changes throughout the day as the sun moves across the sky.
The device that astronomers use to find the angle between the horizon and stars in the sky is called a sextant.
Sextant is used to measure the angle between any two visible objects.Its primary use is to determine the angle between a celestial object and the the horizon which is also know as objects altitude.
If the reference point and an object are both on the horizon then the angular distance to the object, relative to the reference point is simply the angle formed between the two rays from the observer to object and to the reference point. If either the object or reference point (or both) are not in the plane of the horizon then the appropriate rays are the projections of the rays from the observer onto the plane containing the horizon.
A 45 degree sun angle indicates that the sun is halfway between the horizon and directly overhead (known as the zenith). Such an angle causes the length of an object's shadow to be equal to the object's height.
Almost . . ."Altitude" is the apparent angle of the object above the horizon.
Azimuth tells us the direction in which a celestial object can be seen. It is the angle (clockwise) between due north and the point on the horizon directly below the object. The azimuth of the Sun thus varies with the time of day and the time of year.
the angle of elevation would be the angle between the horizon and the line of sight to whatever object you are measuring to. Lets say for instance that you see a plane, and you determine that it has an angle of elevation of 30 deg. This means that from the horizon, you would need to look up at an angle of 30 degrees to see that plane. below I linked to a diagram which illustrates it quite well. Hope this helped!