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Old 24-06-2019, 06:55 AM
furgle (Adam)
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Ceres passing by the Blue Horsehead Nebula


Shown in this animation is the movement of Ceres over 8 hours, on the night of 4th June 2019, as it passed by the outer edge of IC4592, the Blue Horsehead Nebula.

I spent quite a bit of time planning and waiting for this shot, both on nights Ceres was near the nebula, and later in the month, so I could cancel it out in the image stack. I wanted to show the movement in a wide-field color animation, rather than the usual high zoom black & white.

With a diameter of 945km, the dwarf planet Ceres is the largest object in the asteroid belt between Mars and Jupiter.


  • 64x 300s Luminance
  • 25x 150s Red
  • 26x 150s Green
  • 32x 150s Blue
Total integration 8 hours 48 minutes.

  • Skywatcher Black Diamond 80ED
  • Skywatcher EQ8 Pro mount
  • QSI 683-ws8 Camera @ -15°C
  • Astronomik Luminance, Deep Sky RGB filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Starlight Xpress Active Optics
  • Innovations Foresight On Axis Guider
  • Starlight Instruments Focus Boss II

  • Exposed during 4 nights between 4th June and 12th June 2019.
  • Orange zone in Brisbane, Australia. (Bortle 7)
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Click for full-size image (CeresColorAnimationIISThumb.jpg)
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Old 24-06-2019, 07:03 AM
Imme (Jon)
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Now that’s astronomy....well done.

Kinda puts all the rest of us that take pretty pictures in our place doesn’t it!

Even as a stand alone picture the colours are great. My hats off to you mate, great work
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Old 24-06-2019, 05:36 PM
gb44 (Glenn)
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Great stuff! Have you done Pluto?

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Old 26-06-2019, 07:14 PM
Dazzled by the Cosmos.

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Excellent work.


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Old 26-06-2019, 11:47 PM
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Retrograde (Pete)
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That is very cool!
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Old 27-06-2019, 08:58 AM
furgle (Adam)
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Thank you.

Originally Posted by gb44 View Post
Great stuff! Have you done Pluto?

I have once, when it came within 1.5 degrees of Mars. It's barely a couple of pixels at that scale though: https://observatory.site/astrophotog...o_Conjunction/
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