Rosette Nebula also known as NGC 2237
The Rosette Nebula is a vast emission nebula located about 5,200 light years away. The star forming region lies near a large molecular cloud in the constellation Monoceros, the Unicorn. It is closely associated with the young open star cluster NGC 2244.
Also known as the Satellite Cluster, NGC 2244 appears in the centre of the Rosette. The hot young stars of the cluster were formed from the nebula’s material in the last 5 million years.
The stars in the Satellite Cluster are responsible for the nebula’s glow. Their radiation ionizes the surrounding clouds of nebulosity, causing them to emit their own light. The nebula glows in the red part of the spectrum because the powerful ultraviolet radiation from the stars strips electrons from the nebula’s hydrogen atoms.
The Rosette Nebula is a very active stellar nursery. It is home to numerous Herbig-Haro objects and Herbig Ae/Be stars, Bok globules, T Tauri stars and clusters of newly formed stars. The dark filaments of dust extending toward the centre of the nebula, sometimes called “elephant trunks,” are shaped by the stellar winds and radiation from hot young stars and electromagnetic forces.
The Rosette (or Rosetta) Nebula spans 130 light years and has an angular size of 1.3 degrees. It is much larger than the better-known Orion Nebula, which is about 24 light years across. However, the Orion Nebula is much closer to us at 1,344 light years and appears brighter but smaller than the Rosette.
The Rosette Nebula has an estimated mass of about 10,000 solar masses. It is home to about 2,500 stars. The most massive O- and B-type stars power the nebula and cause it to expand. The nebula will disperse in the next few million years, leaving behind only the central cluster, NGC 2244.
The Rosette Nebula was named after the stylized flower design used in sculptural objects since antiquity. The nebula’s appearance in optical light resembles the rosette. It is sometimes calleTarget: M45 Pleiades
Location: The Farm
Date: 01/11/2024
Scope: 14Edge f2
Main Camera: 6200mc
Filter: Optolong LPro
Guide Scope: Evo50
Guide Camera: ZWO 174-mini
Frames & Exposure:
113 Frames at 300 secs = 565 minutes
