...This star will always be an object of interest to astronomers, as it wasthe first of the stellar multitude that revealed to Bessel the secret ofits distance... 
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...When Bessel engaged in his labours, the pair of stars forming the doublewere at the point indicated on the diagram by the date 1838...
Robert Stawell Ball 「The Story of the Heavens」
...Struve at Dorpat, Bessel at Königsberg, and Henderson at the Cape ofGood Hope—all of them at newly-equipped observatories—were severallyengaged at the same problem...
Oliver Lodge 「Pioneers of Science」
...Hitherto the brightest had been mostattended to, but Bessel thought that quickness of proper motion would bea still better test of nearness...
Oliver Lodge 「Pioneers of Science」
...To do this, one would have to measure just about the amount ofparallax that Bessel found in his star...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...Themeasurement of the distance even of the nearest stars evadedastronomical research until Bessel and Struve arose in the early partof the present century...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...The factthat the subsequent invention by Bessel may have been independent doesnot detract from the merits of either...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...Frederick William Bessel was born in 1764 at Minden, in Westphalia...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...The star selected by Bessel is a binary known as 61 Cygni, thecomponents being of magnitudes 5·5 and 6 respectively...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...Believing, as Bessel did, that there must besome adequate cause for these disturbances, it was hardly possible todoubt what the cause must be...
Robert Stawell Ball 「The Story of the Heavens」
...We shall presently show that we believe Struve was right,yet it does not necessarily follow that Bessel was wrong...
Robert Stawell Ball 「The Story of the Heavens」
...Viewed in this manner, thediscrepancy between Struve and Bessel vanishes...
Robert Stawell Ball 「The Story of the Heavens」
...It does revolve round Sirius in aperiod of 49·4 years—almost exactly what Bessel assigned to it...
Oliver Lodge 「Pioneers of Science」
...We have seen, also, how the abnormal proper-motion of Siriussuggested to Bessel the existence of an unseen companion...
Oliver Lodge 「Pioneers of Science」
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