Harold Corwin

IC 694 is the faint galaxy just northwest of the peculiar interacting pair NGC 3690. Swift's discovery note is not very clear about the object's location with respect to the NGC object, but his position places it northwest. If we assume that he took the NGC position for 3690 and offset from that to find his own position and compare the offsets with those from the modern positions, we find roughly the same numbers.

Swift, however, was not the first to see IC 694. Lord Rosse's observation of NGC 3690 in 1860 mentions an "appendage" about one object (i.e. NGC 3690) diameter northwest. This description fits what he could have easily seen with his 72-inch "Leviathan," so Dreyer correctly credits him as well as Swift with the discovery.

― IC Notes by Harold Corwin

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