Robins Egg Nebula - Adam Lundie - Eatons Hill Observatory

Robins Egg Nebula

Robins Egg Nebula thumbnail
Robins Egg Nebula
NGC 1360 is known as the Robin's Egg Nebula, primarily due to its blue hue from strong oxygen-III emissions. It is a diffuse planetary nebula 1794 light years away. Presented is a narrowband image with H-alpha emissions mapped to red, and OIII emissions mapped to both green and blue (HOO palette).


  • 47x 600s Ha bin2x2
  • 50x 600s OIII bin2x2
  • 22x 60s Red bin1x1
  • 32x 60s Green bin1x1
  • 20x 60s Blue bin1x1

Total exposure 17 hours 24 minutes.


  • Celestron 11" Edge HD
  • Celestrong 0.7x EdgeHD focal reducer
  • Skywatcher EQ8 Pro mount
  • QSI 683-ws8 Camera @ -15°C
  • Astronomik 6nm Ha, 6nm OII, Deep Sky RGB filters
  • Starlight Xpress Active Optics
  • Starlight Xpress Lodestar X2 Autoguider
  • Innovations Foresight On Axis Guider
  • Starlight Instruments Focus Boss II


  • Orange zone in Brisbane, Australia. (Bortle 7)
  • Imaged over 10 nights, 0% to 50% moon.


  • Planning & camera alignment with Aladin 9
  • Captured with AstroArt 6
  • Guiding with PHD2 + PHD_Dither
  • FocusLock live focusing
  • CCDInspector: Image analysis & rejection
  • CCDStack 2+: Calibrate, align, stack, combine RGB.
  • Photoshop CC: Shadows/highlights, combine Ha+OII+RGB, noise reduction, curves, adjust colour balance, saturation, crop.