Pre-pulsar shuttle 26

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Pre-pulsar shuttle 26
Pre-pulsar shuttle 26 image
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 200
Bounding box 37×37
Period 26
Mod Unknown
Heat 113.2
Volatility 0.81
Strict volatility 0.81
Discovered by David Buckingham
Year of discovery 1983

Pre-pulsar shuttle 26 is a period-26 pre-pulsar shuttle oscillator discovered by David Buckingham on January 18, 1983 with an alternate stabilization using beehives rather than blinkers.[1] Its original form was the first period-26 oscillator to be found. It is composed of four 14-generation pre-pulsar shuttle mechanisms that use a blinker stabilization found by Noam Elkies on April 22, 1997,[2] as well as a central 12-generation pre-pulsar shuttle mechanism composed of four beacons. On November 17, 2016, Thunk found a smaller 14-generation pre-pulsar shuttle mechanisms, resulting in a 144-cell variant of this oscillator.

The 200-cell variant was the smallest known period-26 oscillator (in terms of minimum population) until the discovery of the p26 glider shuttle in February 2012. The smallest known period-26 oscillator is currently 87P26.

Image gallery

Generation 4 reveals four pre-pulsars (black) being hassled by a 14-generation mechanism (green) and a 12-generation mechanism (red).
The original pre-pulsar shuttle 26
RLE: here
A pre-pulsar shuttle 26 variant with a minimum population of 144.
View animated image.
RLE: here

See also


  1. Dean Hickerson's oscillator stamp collection.
  2. Jason Summers' all-osc oscillators collection

External links