Smoke alarm fitted!

I have security alarms, and a fire extinguisher handy for the observatory – but it took a recent catastrophic failure of a PSU to make me think about putting a smoke alarm in there!  Fortunately I had two battery operated smoke alarms in the loft (builders put mains operated alarms in the house when they did some work).  So now there’s an added bit of protection for the observatory.  I would strongly recommend you do the same if you have your observatory within earshot as there have been several cases of fires going unnoticed with the obvious consequences.