Captain William Henry Smyth
Nov 21, 1834    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A neat double star, on the Bull's southern horn; where a line run from the cluster in Orion's sword, and extended as far again to the north, passes upon it. A 8, and B 8½; both bluish, and lying between two stars in the sp and one in the nf quadrant, and nearest to the latter. It was discovered by Σ., and is No. 670 of the great Dorpat Catalogue, where the registered measures are:

    Pos. 171°.13  Dist. 2".327  Ep. 1830.53
   [WDS  165°           2".60       2019   ]

M. Struve styles A, alba; but in noticing so slight a difference of shade, even on so small an object, it is requisite to know to what degree his field of view was illuminated, and in what manner. It is possible that colour may interfere with our exact perception of size, which points out the necessity of obtaining greater accuracy of expression in the language of sidereal astronomy.

― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844

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