Moon Gravitational Lens
In the Face Book group:
Can we measure the Moon's gravitational lens?
The angle of the deviation is directly proportional to the mass of the lens.
Apparently the 1919 test with the sun confirmed a 2 arc second deviation.
I can't find it on the web right now but I think we might be trying a test with Jupiter.
The Sun is 1047 times Jupiter.
We must be able to detect a deviation of 2/1047 arc seconds.
The Sun is roughly 3* 10^4 times the Moon.
Could we reliably detect 2/30,000 arc seconds?
After a few minutes I added this comment:
The obvious problem with such a tiny number is when nothing is detected. That means either the equipment failed at this fine resolution or else the moon (having no electric field) cannot be a gravitational lens.
On 04/06/2019 I added this comment:
Both rough estimates are wrong. The moon's mass is much less but its distance is much shorter. The distance to Jupiter is roughly 4 times that to the Sun. I did not attempt either calculation as this post just asks a general question.
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