Re: [Phys-l] moon illusion measurement

[Stefan Jeglinski <jeglin@4pi.com>]

> If a stellar yardstick were visible in your shots, it would ease 
> your concerns about the variability of the zoom.   How helpful if 
> two stars were also visible in the field of view of the various 
> shots!

True, but not exhibited. The horizon shot was taken at a time before 
dusk when only an object like Venus might have also been visible (and 
it was not). the zenith shot suffers the same fate as many 
astronomical shots: the brightness of the moon (it was full, by the 
way) is so significantly different than other stellar objects that to 
photograph both simultaneously with appropriate exposures is 
impossible.


Stefan Jeglinski