It's seems appropriate to me to give more computing resources to sponsored charts -- after all, sponsors are helping to pay precisely for that.

It currently takes about two hours for me to update all chart pages after a CMC forecast update. So some charts get updated sooner than others. The 'update rank' or order by which I generate charts is listed in the 'techno-geek' fine print at the bottom of the legend pages. I nominally choose to update the most used charts first.

To thank sponsors for their patronage, I will be updating sponsored charts first and then all other charts.

I may release to sponsored-charts first, cpu-time-intensive features that I can't afford to generate for all charts. (Then later to all charts as I upgrade computers.) One example is that I am interpolating, to hourly resolution, the seeing forecast for the 30 most sponsored charts.

But to be fair to all sponsors, I acknowledge sponsors on this page, and on chart pages they've chosen to support, for a time proprotional to their sponsorship. It works out to us$0.137 per chart per day for non-commercial sponsors. (I convert Canadian dollar sponsorships to USD at the current rate.)