IC 4397 NGC 5943
Boo
☀13.2mag
Ø 78'' / 42''

Lewis Swift discovered IC 948 = Sw. VII-38 = Sw. VIII-78 on 7 Apr 1888 and reported "eF; S; R; 3 others suspected." He found the trio again a year later and reported them as new in his 8th discovery list.

600/800mm - 24" (6/12/18): at 282x; fairly faint or moderately bright, oval 3:2 or 5:3 NW-SE, 40"x24", strong sharp concentration with a small bright core and stellar nucleus, the halo is faint. Member of the WBL 470 group with IC 946 4.7' WNW. A mag 8.1 star is 8' SW.

Notes by Steve Gottlieb