James Dunlop probably discovered NGC 1704 = D 110 in 1826 with his 9" reflector and reported "a small faint nebula". Dunlop claims two observations and his position is 11' too far NE (typical error). John Herschel described the cluster (h2683) in Dec 1834 as "B; R; bM; 90"." On a later sweep he called it "eF; S; E; 40" l; resolvable."
600/800mm - 30" (11/6/10 - Coonabarabran, 264x): bright, moderately large, slightly elongated, 1.1'x0.9'. Contains three bright collinear stars oriented E-W as well as a number of faint stars resolved in the halo. NGC 1702, a bright resolved cluster, lies 6' SSW and a mag 7.2 star (HD 31518) lies 6' SE. NGC 1704 forms the north vertex of an equilateral triangle with NGC 1702 and the bright star.
Notes by Steve Gottlieb