Kern DKM3-A - Astronomical Position, Time and Azimuth Determination

Kern DKM3-A - Astronomical Position, Time and Azimuth Determination

Table of Contents

I. The aims of astronomical position, time, and azimuth determinations

Fundamentals and definitions from astronomy

 

1. The aims

2. The horizon system

3. The diurnal motions of stars

4. Altitude of the pole

5. The equatorial system

6. Sidereal time and longitude

7. Mean solar time; Universal Time

 

II.. The instruments

 

1. Technical data on the DKM 3-A theodolite

2. Description and operation of the DKM 3-A

3. Telescope and optics of the DKM 3-A

4. Reticle and micrometer

5. The double-circle principle and circle reading

6. The levels

 

III.. Time recording. Use of some necessary table

Orientation of the theodolite

 

1. Clocks

2. Time-signal transmitters

3. The chronograph.

4. The impersonal micrometer. The width of contact strips

5. Time conversions

6. Star coordinates

7. Refraction

8. Orientation of the theodolite. The Polaris method

 

IV. Latitude determinations

 

1. The method of meridian zenith distances (Sterneck method)

a. The principle of the method

b. The star list for the observation

c. The observation procedure

d. The computation

e. Related methods

 

2. The Horrebow-Talcott method

        a. The principle of the method

        b. The star list for the observation

        c. The observation procedure

        d. The computation

 

V. Longitude determinations

 

1. The meridian method of time determination

        a. The principle of the method

        b. The observation procedure

        c. The computation

        d. The Döllen method

 

2. The Zinger method of time determination

 

        a. The principle of the Zinger method

        b. The star list for the observation

        c. The observation procedure

        d. The computation

 

VI. Azimuth measurements

 

1. General survey of methods of azimuth measurements

2. Polaris method

        a. procedure of the Polaris method

        b. The computation

 

VII. Refraction tables with zenith distance as argument