Deep-Sky Objects Dataset

M. Verga (OpenNGC project) (n.d.). OpenNGC. M. Verga (OpenNGC project). https://github.com/mattiaverga/OpenNGC

@misc{cite:openngc,
  title        = {OpenNGC},
  organization = {M. Verga (OpenNGC project)},
  year         = {n.d.},
  url          = {https://github.com/mattiaverga/OpenNGC},
  note         = {Open NGC/IC deep-sky object catalogue.}
}

NASA/IPAC (Caltech) (n.d.). Andromeda Galaxy (M31) — NASA/IPAC Extragalactic Database. NASA/IPAC (Caltech). https://ned.ipac.caltech.edu/

@misc{cite:ned-galaxy-andromeda-galaxy,
  title        = {Andromeda Galaxy (M31) — NASA/IPAC Extragalactic Database},
  organization = {NASA/IPAC (Caltech)},
  year         = {n.d.},
  url          = {https://ned.ipac.caltech.edu/},
  note         = {Positions, redshift, and cross-identifications for Andromeda Galaxy (M31).}
}

NASA/IPAC (Caltech) (n.d.). Messier 87 — NASA/IPAC Extragalactic Database. NASA/IPAC (Caltech). https://ned.ipac.caltech.edu/

@misc{cite:ned-galaxy-messier-87,
  title        = {Messier 87 — NASA/IPAC Extragalactic Database},
  organization = {NASA/IPAC (Caltech)},
  year         = {n.d.},
  url          = {https://ned.ipac.caltech.edu/},
  note         = {Positions, redshift, and cross-identifications for Messier 87.}
}

NASA/IPAC (Caltech) (n.d.). Sombrero Galaxy (M104) — NASA/IPAC Extragalactic Database. NASA/IPAC (Caltech). https://ned.ipac.caltech.edu/

@misc{cite:ned-galaxy-sombrero-galaxy,
  title        = {Sombrero Galaxy (M104) — NASA/IPAC Extragalactic Database},
  organization = {NASA/IPAC (Caltech)},
  year         = {n.d.},
  url          = {https://ned.ipac.caltech.edu/},
  note         = {Positions, redshift, and cross-identifications for Sombrero Galaxy (M104).}
}

NASA/IPAC (Caltech) (n.d.). Triangulum Galaxy (M33) — NASA/IPAC Extragalactic Database. NASA/IPAC (Caltech). https://ned.ipac.caltech.edu/

@misc{cite:ned-galaxy-triangulum-galaxy,
  title        = {Triangulum Galaxy (M33) — NASA/IPAC Extragalactic Database},
  organization = {NASA/IPAC (Caltech)},
  year         = {n.d.},
  url          = {https://ned.ipac.caltech.edu/},
  note         = {Positions, redshift, and cross-identifications for Triangulum Galaxy (M33).}
}

NASA/IPAC (Caltech) (n.d.). Whirlpool Galaxy (M51) — NASA/IPAC Extragalactic Database. NASA/IPAC (Caltech). https://ned.ipac.caltech.edu/

@misc{cite:ned-galaxy-whirlpool-galaxy,
  title        = {Whirlpool Galaxy (M51) — NASA/IPAC Extragalactic Database},
  organization = {NASA/IPAC (Caltech)},
  year         = {n.d.},
  url          = {https://ned.ipac.caltech.edu/},
  note         = {Positions, redshift, and cross-identifications for Whirlpool Galaxy (M51).}
}

Asteria Star (n.d.). Asteria Star Scientific Image Catalogue. Asteria Star. https://asteriastar.com/images

@misc{cite:asteria-image-catalogue,
  title        = {Asteria Star Scientific Image Catalogue},
  organization = {Asteria Star},
  year         = {n.d.},
  url          = {https://asteriastar.com/images},
  note         = {Verified scientific images with per-image credit, source, and license.}
}

Space Telescope Science Institute (n.d.). Crab Nebula (M1) — HubbleSite / STScI. Space Telescope Science Institute. https://www.stsci.edu/

@misc{cite:stsci-nebula-crab-nebula,
  title        = {Crab Nebula (M1) — HubbleSite / STScI},
  organization = {Space Telescope Science Institute},
  year         = {n.d.},
  url          = {https://www.stsci.edu/},
  note         = {STScI imagery and science for Crab Nebula (M1).}
}

Space Telescope Science Institute (n.d.). Eagle Nebula (M16) — HubbleSite / STScI. Space Telescope Science Institute. https://www.stsci.edu/

@misc{cite:stsci-nebula-eagle-nebula,
  title        = {Eagle Nebula (M16) — HubbleSite / STScI},
  organization = {Space Telescope Science Institute},
  year         = {n.d.},
  url          = {https://www.stsci.edu/},
  note         = {STScI imagery and science for Eagle Nebula (M16).}
}

Space Telescope Science Institute (n.d.). Lagoon Nebula (M8) — HubbleSite / STScI. Space Telescope Science Institute. https://www.stsci.edu/

@misc{cite:stsci-nebula-lagoon-nebula,
  title        = {Lagoon Nebula (M8) — HubbleSite / STScI},
  organization = {Space Telescope Science Institute},
  year         = {n.d.},
  url          = {https://www.stsci.edu/},
  note         = {STScI imagery and science for Lagoon Nebula (M8).}
}

Space Telescope Science Institute (n.d.). Orion Nebula (M42) — HubbleSite / STScI. Space Telescope Science Institute. https://www.stsci.edu/

@misc{cite:stsci-nebula-orion-nebula,
  title        = {Orion Nebula (M42) — HubbleSite / STScI},
  organization = {Space Telescope Science Institute},
  year         = {n.d.},
  url          = {https://www.stsci.edu/},
  note         = {STScI imagery and science for Orion Nebula (M42).}
}

Space Telescope Science Institute (n.d.). Ring Nebula (M57) — HubbleSite / STScI. Space Telescope Science Institute. https://www.stsci.edu/

@misc{cite:stsci-nebula-ring-nebula,
  title        = {Ring Nebula (M57) — HubbleSite / STScI},
  organization = {Space Telescope Science Institute},
  year         = {n.d.},
  url          = {https://www.stsci.edu/},
  note         = {STScI imagery and science for Ring Nebula (M57).}
}

Space Telescope Science Institute (n.d.). The Pleiades (M45) — HubbleSite / STScI. Space Telescope Science Institute. https://www.stsci.edu/

@misc{cite:stsci-star_cluster-pleiades,
  title        = {The Pleiades (M45) — HubbleSite / STScI},
  organization = {Space Telescope Science Institute},
  year         = {n.d.},
  url          = {https://www.stsci.edu/},
  note         = {STScI imagery and science for The Pleiades (M45).}
}