I have heard that the VLF (Very Low Frequeny) activity would give you
give sure signs of this type events.
You ever heard of that.
There are sites about VLF, you may have a look into this and tell me
if you find something useful.

Friedel


At 12:03 a.m. 15/11/01 -0900, you wrote:
>I am very interested in your project as it sounds close to something I am
>doing. I live in Kenai Alaska and want to be alerted when the northern
>lights are out so I dont miss the free light show. If it works good enough I
>wanted to put out an automated email alert over the internet to people that
>sign up for it (NO SPAM) and to graph the sensor for everyone to see. I was
>told I also might be able to do this by watching the magnetism of the earth
>in my area.
>Wrong Way Ray (Raymond Choat)
>rc@kenai.net
>
>----- Original Message -----
>From: "Peter Grey" <martech@OZEMAIL.COM.AU>
>To: <PICLIST@MITVMA.MIT.EDU>
>Sent: Wednesday, November 14, 2001 11:35 AM
>Subject: [EE]: Light Sensors
>
>
> > I wish to measure light during the night. I am told that typical levels
>are
> > around 0.1 lux. They want a wide range with good resolution. By the way it
> > must be light and cheap! Has anyone got any suggestions? I am trying to
> > measure a broad band of visible light that animals are exposed to. The
>moon
> > is also a factor.
> >
> > TIA
> >
> >
> > Peter
> >
> > --
> > http://www.piclist.com hint: The list server can filter out subtopics
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> >
> >
> >
>
>--
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