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Marcel and I, between us, are making somewhat heavy weather of this
question of distortion of sky angles in a camera image, and it seems to be
that these arguments still have some way to run. But I am heartened by
Marcel's note of 7 July, in which he appears to be acknowledging to Greg
that he now accepts the result of the analysis: that what he describes as
the "calibration function" must have some sort of quadratic form.

Although this argument seems to be providing a bit of enjoyment to its
participants, and has some relevance to navigation, in regard to possible
use of a camera, it may not be the sort of question to interest many
Navlist members. I wonder, if Marcel and Greg agree, whether it might be
the time to take it off-list, and deal with it backstage between the three
of us. But if any other Navlist member (just one would do) is following the
discussion, and sticks his hand up to ask for it to be kept on-list, I for
one would go along with that request.

George.

contact George Huxtable, at  george@hux.me.uk
or at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

   

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