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_{1}and fires a photon every second to observers on earth. (Observers on Earth do not know the velocity of the rocket)

If 1s is the proper time [itex]\Delta[/itex][itex]\tau[/itex] then the time passed on Earth between each photon being fired would be [itex]\gamma[/itex] or 2.29416s. Then dependent on the initial position x

_{1}the time between each measured photon on Earth would be the time for each photon to travel the distance d from each position x at every 2.29416s? From measuring the time between each photon that reaches Earth you could calculate the positions x

_{2}...x

_{n}. But you would only be able to know the positions of where the rocket was not where it is presently.

Assuming I understand the above, how would someone go about by calculating the positions if the rocket is accelerating?