ScienceDownEast | ScienceDownEast Astrophotography | S30 | IC 2169
Click on the image to view it at full resolution, then click again for actual size.
IC 2169, sometimes called Dreyer's Nebula, is a bright blue reflection nebula in the constellation Monoceros, lying roughly two degrees west of the more famous Cone Nebula and Christmas Tree Cluster (NGC 2264). At a distance of about 2,500 light-years, it belongs to the same large star-forming complex as NGC 2264, cataloged as part of the RCW/Sh2 region of active star formation in this part of the Milky Way. Illuminated by young, hot embedded stars, the nebula shows characteristic blue reflection-nebula coloring from starlight scattering off surrounding dust, in contrast to the reddish emission nebulosity typical of nearby star-forming regions. It rewards broadband RGB imaging under dark skies to bring out its...
Total image time was 34 minutes.
IC 2169, sometimes called Dreyer's Nebula, is a bright blue reflection nebula in the constellation Monoceros, lying roughly two degrees west of the more famous Cone Nebula and Christmas Tree Cluster (NGC 2264). At a distance of about 2,500 light-years, it belongs to the same large star-forming complex as NGC 2264, cataloged as part of the RCW/Sh2 region of active star formation in this part of the Milky Way. Illuminated by young, hot embedded stars, the nebula shows characteristic blue reflection-nebula coloring from starlight scattering off surrounding dust, in contrast to the reddish emission nebulosity typical of nearby star-forming regions. It rewards broadband RGB imaging under dark skies to bring out its...
Total image time was 34 minutes.
| Moon Phase | Last Quarter | ||||||||||
| Camera | Seestar S30 | ||||||||||
| Optics | 150 mm focal length, f/5, 30 mm aperture (APO triplet) | ||||||||||
| Filter | IRCUT | ||||||||||
| Binning | 1x1 | ||||||||||
| Date | 2026-03-10 | ||||||||||
| PixInsight Processing |
|
