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Re: (meteorobs) Re: predictions for Perseids 2001?
Quoting Mike Linnolt <mlinnolt@alum.mitdot edu>:
> On 6 Aug 2001, at 14:31, Robert Lunsford wrote:
>
> > below your field of view. By aiming your camera low it is viewing a
> > thicker column of atmosphere which in theory should produce more
> > activity. The zenith is actually the worse area to view meteor activity
> > both visually and photographically.
and then Mike Linnolt wrote:
> While this is based on a simple model, it shows that only for the
> brightest showers could it benefit to center your view somewhat
> below the zenith, certainly not near the horizon. For average or
> fainter showers the best results will be observed at the zenith.
Please note: whenever your observations are not just for the fun of seeing
meteors, but also intend to provide data for rate determinations, please NEVER
start to observe with your field centered low in the sky when a shower of
bright meteors is active. It simply means that your rates are incomparable to
those obtained by someone who has the traditional 60-70 degree altitude field
of view center and will produce ZHR's that are too high.
Such data will mess up any serious data reduction.
When just observing for the fun of seeing meteors while a shower of bright
meteors is going on, there is no problem with it of course.
- Marco
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