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Theory of the astronomical transit instrument applied to the portable transit instrument Wuerdemann no.26: a compilation from various authorities, with original observations by Harry Edward Burton, 1903

Theory of the astronomical transit instrument applied to the portable transit instrument Wuerdemann no. 26: a compilation from various authorities, with original observations by Harry Edward Burton, 1903, Page 83

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Similarly, [ns3] = [ns2] - (([ds2][dn2])/([dd2])) = [dn2] - [nn2] - ((([dn2])/([dd2]))[dd2]) + (([dn2][dn2])/([dd2])) , or [ns3] = -[nn3] . Collecting the formulae for the solution of the normal equations, we have [dd2]x = [dn2] [cc1]c + [cd1]x = [cn1] [aa]a + [ac]c + [ad]x = [an] . Collecting the proof-equations or check-formulae, we have (α) [as] = [aa] + [ac] + [ad] - [an] (β) [cs1] = [cc1] + [cd1] - [cn1] (γ) [ds1] = [cd1] + [dd1] - [dn1] (δ) [ds2] = [dd2] - [dn2] (ε) [ns1] = [cn1] + [dn1] - [nn1] (3) [ns2] = [dn2] - [nn2] [ns3] = -[nn3] = -[vv] , from (22). Following are the computations by logarithms.
 
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