Logically, this does not assure that the moon itself (or even the camera) existed at the time the photograph is supposed to have been taken.
To establish that it is an image of an independent moon requires many other assumptions that amount to begging the question.
This relates to Kantian[citation needed] transcendental aspects of the world, in which a new factor can be included, if the current axioms neither validate nor invalidate it.
The continuum hypothesis and the axiom of choice, are examples of possible transcendental decision points.
Solipsism in its weak form is characterized by the repeated decision not to accept transcendental factors, a logical minimalism.