The Triangulum Galaxy (M33) is one of the nearest large spiral galaxies to us and the third-largest member of the Local Group after Andromeda and the Milky Way. It lies about 2.7 million light-years from Earth and is oriented nearly face-on, making its spiral structure visible in remarkable detail.
Unlike the massive Andromeda Galaxy, M33 has a loose, almost delicate appearance. It lacks a prominent central bulge, while its spiral arms break into chains of young stars, dark dust lanes, and active star-forming regions. The pink patches scattered across the disk are vast clouds of ionized hydrogen where new stars continue to form.
The most prominent of these is NGC 604, a giant star-forming region to the left of the galactic center. It is far larger than the Orion Nebula and remains clearly visible even from a distance of several million light-years.
| Camera | ZWO ASI2600MC |
| Optics | Askar 103 APO |
| Mount | UMi 17S |
| Gain | 0 |
| Sensor Temperature | –10 °C |
| F-ratio | f/7 |
| Exposure | 99 × 300 s |
| Total Integration | 8.25 h |
| Processing | Siril, GraXpert, Affinity |
Annotated
