Author Archives: Greg Parker

Fibonacci – Primes

Here are the first 200 Fibonacci numbers – and the list below shows whether they are Prime (True) or not (False). Courtesy of Mathematica. {1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, … Continue reading

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Sunflower Seed-Head Again

Having spent the whole day on the Golden Ratio, the Fibonacci sequence, the Golden (Planar) Angle, and Phyllotaxis – here is a Mathematica produced piccie of the Sunflower seed-head pattern using 2,000 “seeds”.    

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Yet Another Update on the Golden Ratio

The well-known Fibonacci sequence formed by summing consecutive terms looks like: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89………. And a well known property of this sequence is that if you take the ratio of consecutive terms … Continue reading

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North America nebula region

Another star reduced version of an oldie. This time it’s the North America/Pelican nebula region of Cygnus taken with the 200mm lenses and the Trius M26C OSC CCDs. This is a 3-frame mosaic.

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The Witch’s Broom Region

Another oldie that benefits greatly from a bit of star reduction.

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The Belt Stars of Orion

Another star-reduced image of an oldie.

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Mu Cephei – the Garnet Star

  A reprocess of Mu Cephei.

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Another (faint) ISS Pass

From 5:39 p.m. tonight – another faint ISS pass – this time due to a blazing Moon directly behind me. You can JUST see the ISS running across the middle of the image.

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4:50 p.m. ISS Pass

Tonight’s ISS pass in nautical twilight (too light really to take the image) – but you can just about make it out.

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Star-Reduced North America and Pelican nebulae

A star-reduced version of the North America and Pelican nebulae processed by Noel Carboni.

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