wide field astrophotography
NGC 7635, also known as the Bubble Nebula, SH2-162, or Caldwell 11, is an H II region (ionized hydrogen) emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It is located about 7,900 light-years away from Earth.
Camera: ASI2600MC | Scope: 749mm Askar 107PHQ | Exposure: 2hr 55min | Date: 2024-10-05
Also prominent in the image:
• Messier 52 (M52), also known as NGC 7654, Cassiopeia Salt and Pepper Cluster or the Scorpion Cluster, is an open cluster of stars in constellation of Cassiopeia. It is located about 5,400 light-years from Earth.
• Sh2-159 is an emission nebula also located in the constellation Cassiopeia. It is located about 10,000 light-years away from Earth.
• NGC 7538, also know as the Northern Lagoon Nebula, or SH2-158 is an emission nebula located in the neighbouring constellation Cepheus. It is located about 9,100 light-years from Earth. It is home to the biggest yet discovered protostar which is about 300 times the size of our Solar System.
Annotated version detailing key objects in field of view
The small red square at the centre of the finding chart (above), shows the actual orientation and location of the subject deep space object
