Helix Nebula NGC7293 - Adam Lundie - Eatons Hill Observatory

Helix Nebula NGC7293

06-Oct-2015
Helix Nebula NGC7293 thumbnail
Helix Nebula NGC7293
The Helix Nebula, also known as The Helix, NGC 7293, is a large planetary nebula located in the constellation Aquarius, 695 light years away.

Image:

  • 22x 4 minute Red bin2x2 + 12x Flats + 40x Dark + 120x Bias
  • 17x 4 minute Green bin2x2 + 12x Flats + 40x Dark + 120x Bias
  • 16x 4 minute Blue bin2x2 + 12x Flats + 40x Dark + 120x Bias
  • 27x 8 minute Luminance bin1x1 + 16x Flats + 40x Dark + 120x Bias

Total integration: 7h 16m over two nights

Hardware:

  • Celestron EdgeHD 1100 with CGEM DX mount
  • Celestron 0.7x EdgeHD focal reducer
  • QSI 683-wsg Camera @ -15C
  • Orion StarShoot Autoguider

Location:

  • Orange zone near Brisbane, Australia.
  • Good seeing + last quarter moon phase.

Software:

  • Captured with AstroArt 5
  • Guiding with PHD2 + PHD_Dither
  • CCDStack 2+: Calibrate, align, stack, upscale & combine RGB, levels on Luminance.
  • Photoshop CC: levels, combine RGB+luminance, selective noise reduction, shrink stars, shadows/highlights/high pass filter/contrast
  • CCDStack 2+: Remove gradient

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