NGC 7822

The official name for this object is NGC 7822. NGC stands for New General Catalog and it's one of hundreds of similar lists. An astronomical catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common characteristic like structure, origin, or method of discovery. The most common include the Messier Catalog (M), New General Catalog (NGC), and Index Catalog (IC). For astrophotographers, Abell and Sharpless (SH) are also well known catalogues, because they include some of the best and downright coolest looking targets.
Common names are by far much more interesting and fun than catalogue entries. It's like looking for shapes in clouds on a summer day. In fact it's exactly like that. Except that these clouds are made of hydrogen, oxygen, sulfur and other gases and they're many trillions of miles in diameter. Remember, a light year is about 6 trillion miles! (That's a six followed by 12 zeros). NGC 7822 is one of those nebulae that does not have a common name. Some people see a flaming skull (that seems pretty dark), while others see a bell. If you rotate it clockwise 90 degrees it kind of looks like a question mark. What do you see?