230 



M. N. Berdichevskii 



We 'ivill study the dependence of the correction coefficient p on the di- 

 mensions of the azimuthal arrangement and the parameter t (Table 1). 

 As can be seen from the Table, the values of /j oscillate around unity and 



~iB 



for fixed ^^^ and O vary within the limits of 3%. In connection with this, 



2R 



it can be concluded that when the conditions are satisfied: 



^<0.3,^<0.1,120°<(9<60°. 



the values of the coefficient p do not depend to any great extent on the shape 

 of the KS curve (on the parameter t). 







Fig. 4. Nomogram of coefficient p. 



Let us determine the average arithmetic means of p for each vertical 

 column of the table. It can readily be seen that the individual values 

 of p differ from the arithmetic means of p by not more than 1.6%. 

 Let us use the obtained arithmetic means of p to construct a nomogram 

 of the correction coefficient of p shown in Fig. 4. This nomogram gives the 

 required value of the coefficient of p with errors not exceeding 2 % . 



To find tlie operating distance of the azimuthal arrangement it is neces- 

 sary to determine from its given dimensions — using the above -described 

 nomogram— the value of the correction coefficient p and to calculate the 

 operating distance of the azimuthal arrangement from formula (14). 



If = 90°, the azimuthal arrangement becomes equatorial, and the 

 operating distance R of such an arrangement can be obtained either by the 

 above-described method or from formulae and nomograms used for quad- 



