star tracking was Re: coma was Re: [OM] 35-80/2.8

Subject: star tracking was Re: coma was Re: [OM] 35-80/2.8
From: Acer Victoria <siddim01@xxxxxxxxxxxxxxx>
Date: Mon, 9 Aug 1999 20:42:31 -0700 (PDT)
>>>With a fixed 50mm lens, at mid-latitudes, stars will begin
to trail in about 20 seconds, with a 35mm lens, trailing begins in about
30 seconds.<<<

Come again? Since the 35 is wider, why doesn't it trail earlier? I mean,
with a wider angle of view, you have more stars farther from the Pole
star, and since every other one goes around Polaris, the farther they are,
the faster their linear velocity (to the eye on Earth) to keep a constant
angular veloc. I'm prolly completely and utterly confusing matters<shrug>

/Acer Victoria

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