ScienceDownEast | ScienceDownEast Astrophotography | Galaxies | M33 Triangulum Galaxy | M33 (Triangulum Galaxy)
Click on the image to view it at full resolution, then click again for actual size.
Messier 33, the Triangulum Galaxy, is a face-on spiral galaxy in the constellation Triangulum and the third-largest member of the Local Group after the Milky Way and Andromeda. It lies approximately 2.7 million light-years away, with a true diameter of roughly 60,000 light-years. Unlike the more dramatic M31, M33 has a comparatively low surface brightness, making it more challenging to image well from light-polluted skies despite its relatively large apparent size. Its loosely wound spiral arms host numerous star-forming HII regions, most notably NGC 604, one of the largest known star-forming regions in the Local Group. M33 rewards long, dark-sky exposures that bring out its faint spiral structure and pink-tinged nebular knots.
[Source: Wikipedia, en.wikipedia.org/wiki/Triangulum_Galaxy]
Messier 33, the Triangulum Galaxy, is a face-on spiral galaxy in the constellation Triangulum and the third-largest member of the Local Group after the Milky Way and Andromeda. It lies approximately 2.7 million light-years away, with a true diameter of roughly 60,000 light-years. Unlike the more dramatic M31, M33 has a comparatively low surface brightness, making it more challenging to image well from light-polluted skies despite its relatively large apparent size. Its loosely wound spiral arms host numerous star-forming HII regions, most notably NGC 604, one of the largest known star-forming regions in the Local Group. M33 rewards long, dark-sky exposures that bring out its faint spiral structure and pink-tinged nebular knots.
[Source: Wikipedia, en.wikipedia.org/wiki/Triangulum_Galaxy]
| Moon Phase | Waxing Crescent | |||
| Camera | ToupTek ATR2600C | |||
| Optics | Skywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet) | |||
| Date | 2025-09-24 | |||
| PixInsight Processing |
|
