28 Dec 2025
The Spaghetti Nebula (Simeis 147, Sh2-240) is a vast, faint supernova remnant, the glowing gaseous remains of a star that exploded about 40,000 years ago, located near the Taurus and Auriga constellations. It gets its name from its intricate, filamentary structure resembling spaghetti, with hydrogen and oxygen atoms emitting red, magenta, and blue-green light, making it a challenging target for astrophotographers due to its large size (3 degrees across) and low surface brightness. This is my second attempt at processing this data set.
Sh 2-240
5 credit
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| SII | 300 | 2h30m | 30 |
| Halpha | 300 | 2h30m | 30 |
| OIII | 300 | 2h30m | 30 |