NGC 5581 NGC 5509
Boo
☀14.1mag
Ø 78'' / 18''

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John Herschel discovered NGC 5553 = h1775 on 6 May 1831 and recorded "vF; lE; 15"." Although he noted both the RA and Dec as very uncertain, his position is just 1' south of CGCG 191-075 = PGC 51161.

400/500mm - 17.5" (6/2/00): faint, small edge-on E-W, 0.8'x0.2'. At the edge of the 220x field are IC 4397 10' NW and IC 4405 10' E (IC 4399 6' NNW not seen).

Notes by Steve Gottlieb