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(meteorobs) Re: Point meteors and DCVs

Kim and All,

DCV means the Distance from the Center of your Vision. If you average
all the DCV's I have measured the result would be near 25 degrees.
Naturally the brighter the meteor the larger the average DCV will be.
For me, meteors brighter than 0 magnitude have a DCV near 40 degrees
while those of 5th and 6th magnitude are less than 10 degrees.

Seeing point meteors should not increase ones workload. 99% of the
possible point meteors have a secondary flash a few seconds later and a
few degrees away. Those that do not are listed as having lengths of 0
degrees. During major showers a candidate seen at the radiant is 99%
certain to be a point meteor. Still, the only shower that have produced
point meteors for me are the Geminids and the Quadrantids. No point
meteors were seen during the Leonid storm last month. An average of 50
hours between point meteors seems quite reasonable. 

This is just an experiment I started incorporating into my data several
years ago. It turns out to be an excellent measurement of the accuracy
of each meteor seen rather than using A, B, C, or Good, fair, or poor.

Clear Skies!

Bob

"Kim S. Youmans" wrote:
> 
> Bob,    Mark,
> 
>   Please explain to me what you two are talking about.  What exactly is DCV? When
> Bob say his DCV for all magnitudes is averaged at 25 degrees, what exactly does
> that mean?
>      I seemed to see about as many point meteors as Mark indicated, but once I
> realized seeing them also involved reasearching satellite positions (to discount
> that possibility), I began hoping that I would not  see any unless they came
> straight out of known, active radiants.  Just too much additional work for a
> beginner!
> Kim(XY)
> 
> P.S.   I wonder if any video observations could give a percentage of Leonids that
> were pointers during the storm, and I wonder if that percentage could in any way
> be extrapolated to other meteors, even sporadics.  Just a pipe dream...
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