The Bubble Nebula is an H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow] It was discovered in 1787 by William Herschel.
Melotte 15 is in the center of the Heart Nebula IC 1805 lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It was discovered by William Herschel on 3 November 1787. It is an emission nebula showing glowing ionized hydrogen gas and darker dust lanes.
To me it looks more like an ice cream cone! but!..NGC 1491 is a bright nebula in the constellation of Perseus.
