(meteorobs) Talking clocks
meteoreye at comcast.net
meteoreye at comcast.net
Mon Jul 7 11:17:25 EDT 2008
Hmmm, I see. Here in the US we have WWV and CHU available on shortwave frequencies which give out the time continuously that you could record when a fireball is spotted. I don't know if any such time signals are available in europe though.
Wayne
-------------- Original message --------------
From: Francisco Ocaña <albireo3000 at yahoo.es>
> Well, I want it for fireballs. I usually do double observation and 30-60
> seconds (camera exposure time) mean around 10 arcmins in astrometry
> accuraccy, a bit high value.
>
> I will try the stopwatch method, but in the last geminids it would have
> been stressing, hehe. After that I realized that I need a talking clock :-)
>
> Thank you!
>
> Paco
>
> meteoreye at comcast.net escribió:
> > That is true for all talking devices I've seen (or rather heard) It's really
> no big deal, as measurements to the nearest minute are more than adequate for
> 99.9999% of all meteor observations.
> >
> > I do keep a stopwatch around my neck as well to time fireballs (the only time
> where accuracy to the second is usually necessary) which allows me to then take
> a break and determine the fireball time, and also wait for sounds several
> minutes later. But in most cases, it's not worth the extra time to take my eyes
> off the sky.
> >
> > When I see a meteor bright enough to be recorded by the NJAA all sky camera
> (+2 or brighter) I will hit the time talk a few times to determine whether it's
> in the first half of the minute or last, but it rarely makes a difference. In
> most cases, recording to the second is superfluous information...besides you
> then need to estimate how long it took you to hit the talker anyway, since it is
> not instantaneous.
> >
> > Wayne
> >
> > -------------- Original message --------------
> > From: Francisco Ocaña
> >
> >
>
>
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