Bah, yep.
Clouds rolled in about half an hour ago I think. Not even a decent sucker-hole in sight.
I have spent some time since testing a bladder for the Astrotrac's pier.
During previous imaging sessions I have always managed to shift the pier slightly somehow, no matter how careful I have been, and lost my alignment.
Had the idea to drop a good thick Glad garbage bag into the column and fill it with water. Works well.
Takes 10L of water, so adds 10kg of weight to the pier. It feels very solid now, a huge improvement. Should reduce the chances of me disturbing the alignment in future
Thinking I will make 4 or 5 canvas sand bags, more convenient and will be about 15kg instead of 10kg for the same volume.
Got a project for tomorrow, I wonder if Spotlight is open Sundays?
EDIT: nope
Can't think who else would stock canvas...