Andrew Cooper
Apr 19, 2023    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 7 Transparency: 6 Moon: 0%

Σ 1245 is a lovely double consisting of a yellow-white 6th magnitude star [HD 72945] and a companion 10" south and about a magnitude fainter [HD 72946], the 9th magnitude 2' southwest Smyth mentions is easily visible and itself is a listed double, Anton 4 or the WDS E & G components, its 12th magnitude 10" companion beyond the reach of the 8" tonight

Captain William Henry Smyth
Mar 11, 1831    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A neat double star, between Hydra's head and Cancer, close to δ Hydrae, which is the preceding of three nearly equi-distant stars in that monster's head, and following Procyon by 16°. A 6, pale yellow; B 7, rose-tint; and there are several glimpse stars in the field, preceded by a 9th-magnitude at some distance in the sp. And Piazzi no doubt alludes to B in his note No. 108, Hora VIII. where he says: "Duplex. Comes 0".5 temporis sequitur ad boream."

This is 49 ♅. in., in which there appeared to be a slight movement in the npsf direction; but such motion is not confirmed; and as my second epoch was taken under very advantageous circumstances, I have the utmost confidence in the results. The other registered measures are:

    ♅.   Pos. 27° 12'  Dist. 12".50  Ep. 1782.06
    H and S.  24° 03'        10".84      1822.64
    Σ.        25° 45'        10".33      1832.95
   [WDS       25°            10".10      2020   ]

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

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