The Method of Determining the Absolute Parameters of the Meridian Circle in the Equatorial Zone

In view of the limitation of the traditional meridian circle with which the position of a heavenly body can not be absolutely dedermined in lower latitude areas, a method is suggested in the present article of absolutely determining the azimuth and equatorial point of the graduated circle of the meridian circle by making the observations in the meridian direction and the direction at an angle of 60 degrees to the meridian plane in lower latitude areas and the equatorial zone.The determination accuracy of this method is estimated and its applicable range is also discussed in this papes.