Get the Colony Ships ready!

[hazard]

ordnance11 wrote:

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So at build up speed to 0.5C at midpoint and decelerate back down, how long a travel time are we looking at? Too bad, it's at Proxima Centauri. We can be there in a 100 years tops with current technology. 

Presuming instant acceleration/deceleration? 80 years or so. Presuming 1G acceleration? Actually, about as long, taking half a year or so to accelerate to the required speed.
If we presume a constant acceleration to the midpoint it'd be 160 or so years.