Bessel's

A chart of the relative displacements indicated for Bessel's stars by the differences in their inter-mutual positions as determined at

Scientific American Supplement, No. 623, December 10, 1887 Various

The Albany proper motions, as Prof. Boss was careful to explain, depend for the most part upon the right ascensions of Bessel's and Lalande's zones, and are hence subject to large errors.

Scientific American Supplement, No. 829, November 21, 1891 Various

One is a star a little above the seventh magnitude, distinguished as _s_ Pleiadum; the other, of about the eighth, is numbered 25 in Bessel's list.

Scientific American Supplement, No. 623, December 10, 1887 Various

Bessel's stars are exempt from the general drift of the group.

Scientific American Supplement, No. 623, December 10, 1887 Various

One of Bessel's fifty-three stars was omitted by Dr. Elkin as too faint for accurate determination.

Scientific American Supplement, No. 623, December 10, 1887 Various

Nor did Bessel's achievement long await corroboration.

A History of Science: in Five Volumes. Volume III: Modern development of the physical sciences 1904

Henderson's observations had actual precedence in point of time, but Bessel's measurements were so much more numerous and authoritative that he has been uniformly considered as deserving the chief credit of the discovery, which priority of publication secured him.

A History of Science: in Five Volumes. Volume III: Modern development of the physical sciences 1904

'Relying on this, we have now computed our mean refractions by diminishing those of Bessel's Fundamenta in the proportion of 1 to

Autobiography Airy, George Biddell, Sir 1896

But Bessel's observations, between 1837 and 1840, of 61 Cygni,

History of Astronomy George Forbes 1892

We need only assume that Bessel's comparison stars are about three times as far as 61 Cygni, while Struve's comparison star is at least eight or ten times as far.

The Story of the Heavens 1876