NGC 4198 NGC 3824
Uma
☀13.6mag
Ø 2.5' / 84''

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William Herschel discovered NGC 4025 = H III-617 = h1046 on 17 Mar 1787 (sweep 714) and noted "eF, iR, about 1' in diameter." JH's position is 1' too far north.

400/500mm - 18" (3/30/05): picked up at 165x as a moderately large but very low surface brightness glow. At 225x, it appears ~1.5' diameter with very little concentration. The DSS images reveals a face-on irregular barred spiral with very low surface brightness arms.

Notes by Steve Gottlieb