APOD Retrospective: November 28 - Starship Asterisk*
NGC 281 – Pacman Nebula – astrophotomannheim
NGC 281 - The Pacman Nebula - 8 hours in SHO (Fighting a Strange
The Pacman Nebula: Astrophotography Images, Location and Facts
RocketSTEM - April 2015 by RocketSTEM Media Foundation - Issuu
NGC 281 - Wikipedia
Hanson Astronomy Photos-Nebula
Hubble Space Telescope 2018-2015 - eoPortal
ZWO Astrophotography, NGC7000 - North American Nebula