600/800mm - 24" (9/7/18): at 375x; moderately bright, moderately large, roundish, nearly 1' diameter. Well concentrated with a small bright core. Appears to be (visually) a spiral or barred spiral (verified later). A mag 12 star is 1.4' small, a mag 9.5 star (SAO 91323) is 3' E and a mag 10.0 star (SAO 91319) is 4' N.