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Re: (meteorobs) Photoelectric cell meteor monitoring
Dear meteor observers,
With regard to the discussion quoted below, may I respectfully submit to you kind sirs that if you have plans
like this, you will also have to instruct your machines to avoid registering: Venus, Jupiter, Saturn,
Sirius, alfa Lyr., Capella, aircraft, etcetera. Maybe automation is fine, but you should not only register
light intensity, but at the same time relative motion, I think.
Sincerely,
--
Sent by: Dick V. Gevers Home: Speerdistelveld 5, 3448 EK Woerden, NL
phone: (0031) (0) 348 420 279 Location: 520 04' 51" N. - 040 41' 52" E.
E-mail: dvgevers@worldaccessdot nl
-------------------------Antwoord Scheidingsteken-----------------------------
Aan 19-08-96 18:02, in bericht <960819120201_388761738@emout08.mail.aoldot com>, GeoZay@aoldot com
schreef:
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> Date: Mon, 19 Aug 1996 12:02:01 -0400
> From: GeoZay@aoldot com
> Message-Id: <960819120201_388761738@emout08.mail.aoldot com>
> To: meteorobs@latradedot com
> Subject: (meteorobs) Photoelectric cell meteor monitoring
> Sender: owner-meteorobs@latradedot com
> Precedence: bulk
> Reply-To: meteorobs@latradedot com
>
> In a message dated 96-08-17 11:32:10 EDT, you write:
>
> << Works by means of photoelectric cell coupled to a computer.
> Certainly catches meteors bright enough for camera's. We have two such units
> operational, one in Leiden, one in Oostkapelle. You should ask Hans Betlem
> for more details (betlem@strw.leidenunivdot nl), I only know that it exists and
> works well (many years already), have had much benefit of it. Hardly ever
> have an all-sky photograph without time of meteor known (only if both
> mentioned stations were clouded out and other stations of us captured the
> fireball...).
>
> Regards!
>
> Marco >>
> ------
> Marco,
> Has it ever been proposed (or done) to use your photoelectric cell hooked up
> to a chart recorder or pen recorder to catch high meteor rates for such
> events as the possible Leonid storms? Maybe if it is sensitive enough to
> catch -2's or brighter meteors, it would give a more real picture based on
> time as to the actual activity profile for a major storm such as the Leonids?
> I personally have been trying to devise such a set up for the past 2
> years...I've ran into some problems in that I'm getting some constant weird
> signals onto my chart recorder when I used a fairly large bank of solar
> cells. With half the bank these signals are not present...but from what I
> can tell, it seems that what I presently have will give some kind of small
> signal for meteors in the neighborhood of -10..dot definitely not feasible for
> what I'm trying to do. It definitely responds to a full moon! I haven't tried
> on lesser moon phases...but it's possible? I was thinking that maybe it's
> "field of view" could be predetermined and overwhelming meteor rates can be
> more adequately calculated from the sampled sky ? Maybe the problem lies in
> my equipment, but perhaps with your more sophisticated equipment, perhaps a
> useable device can be constructed? I think it would have more meaning or at
> least complimentary meaning than a bank of camera's for such an event?It
> should show brite meteor hits with accurate times. Everyonce in awhile I will
> take another look at what I've got so far and make some more tests until I
> run out of ideas. Anyhow, Just thought I would throw it out there for
> everyone to chew on...later.
> George Zay
>
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