Venus transit occulted by airliner

"Gareth V. Williams" wrote in message
...
Mike Dworetsky wrote:
: We have made a set of animations of what happened when an airliner flew
: directly across the line of sight near 2nd contact. Both animated .gif
and
: .mov (quicktime).

Cute. Noticeable parallax visible in the path of the airliner between
the two animations. If you know the distance between the two telescopes,
you could estimate the altitude of the airliner.


Interesting observation.

The airliner was moving S to N in the animations approximately along a
meridian of constant RA. The two telescopes were about 20 ft apart, on an
E-W line, but the projected separation towards the sun was only about 10 ft
at most. (I would have to do some measuring and detailed trig involving the
solar azimuth to work out the details).

--
Mike Dworetsky

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