I’m not sure where this got its name from. It doesn’t look especially rose-like to me but “Valentine Rose Nebula” is easier to remember than Sh2-174 or LBN 598 so I’ll go with it. 🙂

This is a planetary nebula in Cepheus and is about 1,000 light years away. It is less symmetrical than most planetary nebulae. All the oxygen seems to be on one side and most of the hydrogen seems to be on the other. I’m not sure why that is. The nebula actually had a strong signal in the sulfur filter which surprises me. Usually planetary nebulae are strongest in oxygen and hydrogen with little, if any sulfur emission (of course there are other elements but these are the three narrowband filters most amateurs use).

For all the technical details, see astrobin.