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Appears you are receiving a lot of good input, Mike.

In one post you consider putting a cheap digital camera on a 5m pole
and triggering it to take photos at intervals.  Microsoft has a free
download for Windows, called "Timershot", with which you can take
pictures at specified time intervals from a web camera connected to
your computer, and save them to a location that you designate. You can
buy a web camera for not much more than a cheap digital camera.

Don't know if this will meet your current needs, but it seems an
interesting application .

Here is the link to the website where you can download the software:

www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx

Good luck.
Bill


On Nov 27, 7:28 am, Isonomia  wrote:
> As I sit here in the cold grey of a Scottish winter and remember
> seeing the sun for a total of one minute during the last three days,
> I'm wondering how practical a session of "solar navigation" would be
> and whether there is any way to find out how often the sun shines?
>
> I once spoke to the met office but they couldn't (or wouldn't) tell
> me. I've looked at solaration tables for solar panels, but couldn't
> separate out the "background - cloud" light level from the "sunshine"
> hours.
>
> So, perhaps someone here know?
>
> In particular I have the following specific questions (ideally for
> locations of Glasgow and London, summer/winter but any information, on
> any location, anytime would be better than none!):
>
> 1. Assuming a view of the horizon, how often can one see the sun at
> the moment of sunrise/sunset.
> 2. How often can one see the sun at the meridian?
> 3. Howmany hours of navigable sunshine do we get?
>
> Mike

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