- Allan Rahill of the Canadaian Meterological Center has created
a numerical forecast model for astronomical seeing
(http://www.cmc.ec.gc.ca/cmc/htmls/seeing_e.html). This the
same seeing forecast used by the Clear Sky Clocks
Allan based his model on of 541 of his own observations with his C14.
So the model is reasonably valid, at least for his home town.
But Allan would like data to validate his model for points
all over North America.
I figure many observers already make note of seeing
conditions in their observing logs. I thought perhaps some
might want to contribute their observations of seeing to a
database that I (foolishly) wrote for the purpose.
The database is on http://cleardarksky.com/so
The observation entry form is lined at the bottom of that page.
The database allows entry of ALPO seeing-scale numbers
and of FWHM star diameters. (I also included two other scales
because I did not wish to pre-scribe which seeing-evaluation
scales observers are actually using.)
The database will be able to process observations as far back as
July 27th. All observations and analysis will be public.
I have the most basic analysis working now, which is to
anotate archived copies of Allan's forecast maps with
Since I am excited Allan tuning his seeing forecast
to perhaps be as accurate as his amazingly accurate transparency
forecast, I would humbly ask ALPO_Jupiter observes to contribute
to the database.