Edit: Below is incorrect. They claim the total area is enough to capture 40 full moons, not that the sensor is 40 full moons across. Assuming a perfectly round sensor you could estimate its radius from that, but that's too much on my phone.
Maybe they "left it as an exercise for the reader"? ;-)
The FOV is "40 full moons", so 40•0.5° = 20°. For a plane 15 miles away that comes to an image covering 2•15•tan(10°) miles = 5.3 miles.
So you can spot a golfball on an image that's 5.3 miles large.
Maybe they "left it as an exercise for the reader"? ;-)
The FOV is "40 full moons", so 40•0.5° = 20°. For a plane 15 miles away that comes to an image covering 2•15•tan(10°) miles = 5.3 miles.
So you can spot a golfball on an image that's 5.3 miles large.