[AZ-Observing] Re: Leonids by the Numbers

Stan,

Please note:  the Vekol count was not scientific, nor what is recommended
for reporting by the Int'l Meteor Org. at  www.imo.net  .

The Vekol Leonids count was conducted by beginning at zero at the start of
every hour according to Greenwich time ticks. At each inter-hour interval
the count was noted, but continued.  The Hourly Rate Change is determined by
subtracting the prior interval meteor count, divided by the change in time
(minutes) interval, and multiplying by 60 to get the hourly rate for that
short time period.  Example:  12:30 count was 22 observed meteors from the
beginning of the hour minus the 12:19 count of 9 observed meteors from the
beginning of the hour equals 13 divided by the time difference of 11 minutes
times 60 equals 71 per hour rate.  The Cumulative Hourly Rate uses the same
formula, but subtracts to the beginning of the hour.  The Cumulative Hourly
Rate has 22 observed for the first 30 minutes for 44 per hour rate.

> What you did, counting at smaller time intervals than an hour, is one of
> the things I learned from this shower (my counts were at hourly
> intervals).  How is the 'total' for the hour calculated?  For example,
> for the 12:00-1:00 time interval, 59 does not equal 8+9+22+34 from the
> 'Observed' column.
>
> Since I am new to meteor shower observations, I don't know how 'Hourly
> Rate Change' and 'Cumulative Hourly Rate' is calculated.  How are they?
>
> Stan
>
> Bill Peters wrote:
> >
> >  MST      Observed     Hourly Rate Change     Cumulative Hourly Rate
> > 12-12:15 a.m.   8                 32                               32
> > 12:19                9                 15
28
> > 12:30                22               71
44
> > 12:45               34 estimate    44                              43
> > 12:00-1:00      59 total         100                              59
> >
> > 1-1:15              28 estimate  112                           112
> > 1:30                  68               160                           136
> > 1:45                  113 estimate 180                           151
> > 1:00-2:00          166 total        212                         166
> >
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