400/500mm - 17.5" (2/1/03): This dwarf irregular galaxy probably lies just outside the local group (4.3 million l.y.) in a small group that includes NGC 3109, Sextans A and the Antlia Dwarf. Picked up without difficulty at 100x, 8' NE of mag 7.7 SAO 118040 (middle of three on a line with two mag 11 stars). At 140x, Sextans B appeared as a large, oval glow, elongated 3:2 WNW-ESE, ~3.5'x2.2', with a low surface brightness and broad, weak concentration. The surface seems slightly irregular or mottled and four fainter stars are near the periphery. This galaxy was surprisingly easy though I had never searched for it before.

900/1200mm - 48" (4/18/15): Sextans B is a nearby dwarf galaxy, generally considered to lie just outside the local group in a small group (including Sextans A). It appeared as a large, fairly low surface brightness oval glow, extending 4:3 WNW-ESE, ~2.6'x1.9'. It exhibits a broad weak concentration to a slightly brighter middle, but there is no distinct core or zones. The surface brightness is irregular and slightly clumpy. A mag 14.5 star is at the north edge of the galaxy and a mag 15 star is off the southeast edge of the galaxy.

A young (2 ? 1 billion years) massive globular cluster (SDSS J100004.63+052007.5) was discovered in 2007 in Sextans B using the HST WFPC2 and verified at the Special Astrophysical Observatory in Russia. At V = 17.9 it appeared as an extremely faint "star" and was visible only intermittently, though repeatedly confirmed at the same position. This object is located ~1.2' ENE of the center of Sextans B, close to the east edge of the galaxy.