[Guest]

Object of known size (the Moon): 3,474.8 km
Angle subtended: 8.8 mils

Range = 3,474.8 km/Tan 8.8 mil = 394,853 km

Actual distance to the moon at the time of the image = 395,228km

395,228 - 394,853 = 375 km
375/395,228 = 0.0009 = 0.1% error (lucky)

 

[Evild]

help me out, i suck at math, how would you range a coyote?

 

[plater1]

You will have to lead it a little, it's a moving target.

 

[Guest]

help me out, i suck at math, how would you range a coyote?

Not all coyotes are the same size.
Ranging animate targets with this method is difficult becase those targets move.

Use a laser.