Thread: seeing Polaris
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Old September 6th 04, 07:36 PM
Mark Gingrich
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Sketcher wrote:

Some *have* seen Polaris in the daytime (with the aid of a telescope).
I know of one person who has even polar-aligned a mount in the daytime
by observing Polaris.

It helps to have a clean, transparent sky; patience; a wide-field
eyepiece (pre-focused at infinity) and a fairly accurate idea of where
to look.



Here's another gimmick for finding Polaris during the day: Use a
"Polaris-ing" filter -- more commonly known as a polarizer.

Polaris is 90 degrees (+/- 23 degrees) angularly distant from the Sun.
So it always lies in a patch of sky where Rayleigh-scattered blue light
exhibits maximum polarization. A single, well-oriented polarizing
filter thus squelches the background sky significantly more than it
squelches Polaris.

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Mark Gingrich San Leandro, California