600/800mm - 24" (5/11/13): Holmberg IV is a dwarf Irregular and a probable member of the M101 group. At 225x it appeared faint, fairly large, elongated 2:1 SSW-NNE, ~1.5'x0.7', weak concentration to a slightly brighter core, low surface brightness, ill-defined periphery fades into the background. Located 1.3? SW of M101 and 13' NE of mag 5.7 86 UMa.