Rigel observatory has had a "small" power upgrade.
There was a lot of wasted space between the rails where the roof rolls off, so I put a couple more solar panels there, and two more off the end for a total of 780 watts.
Not all of it is used for the observatory. 140 watts is probably enough. The other 640 watts goes to the house via cable to run two Engel fridges.
The observatory was the logical place to put them since I am afraid of heights and can't put them on the house roof. The observatory roof rolls off with just enough clearance. Of course doing so blocks light to the solar panels. But then the roof mainly comes off only at night.