24 August 2026

NGC 281 Pacman Nebula


Telescope : SW Esprit 100ED
Mount : SW Wave 150i
Camera : ZWO 533mc
Guiding :Zwo 120mono with Touptek oag
Filters:   Total exposure time :7 hours & 15 minutes from 2 nights with SVBONY 220 7nm 2"
Programs I have used : ZWO AsiAir & PixInsight 1.9.4

NGC 281 (commonly known as the Pacman Nebula) is a bright emission nebula and active star-forming region located in the constellation Cassiopeia.
Key Facts
  • Nickname: It is called the "Pacman Nebula" because its large, dark lane of obscuring dust cuts into the glowing gas, making it look like the classic video game character.
  • Distance: It is located approximately 9,200 to 10,000 light-years away from Earth, positioned in the Perseus spiral arm of our Milky Way galaxy.
  • Discovery: The nebula was discovered in August 1883 by the famous American astronomer Edward Emerson Barnard.
  • Cosmic Nursery: It contains the open star cluster IC 1590. The high-energy radiation from these hot, newborn stars ionizes the surrounding hydrogen gas, causing it to glow with a brilliant red hue.
  • Bok Globules: The nebula features prominent, dense clouds of dust and gas known as Bok globules, which are active sites where new stars are currently packing together and forming.