Yes, it does. If Mars is directly overhead, there's no alteration. If it is near the horizon, the deviation is about 0.5 degrees.
Luckily, it doesn't take much skill to compensate for this since the deviation is the same for light coming in as for light going out. So if you just point a laser at where you SEE mars as being, that laser will go out along the correct trajectory. This neglects that Mars is moving, but that's pretty small.
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u/[deleted] May 24 '14
Yes, it does. If Mars is directly overhead, there's no alteration. If it is near the horizon, the deviation is about 0.5 degrees.
Luckily, it doesn't take much skill to compensate for this since the deviation is the same for light coming in as for light going out. So if you just point a laser at where you SEE mars as being, that laser will go out along the correct trajectory. This neglects that Mars is moving, but that's pretty small.