Back in the mid 80s, two friends and I did an overnight canoe trip down the Cimarron River in OK. We camped on a sand Vintage Muppet I dont always Mahnamahna but when I do doo doot doo do doo shirt r and made a camp fire with some washed up wood posts. I remember a green smoke curling up out of the fire into a can of beans which we ate. We are still alive, but probably a bad idea.Agatha Christie parlor murders, and you’re right. I confused my poisons, this is exactly how one gets found out by a charming old lady with a hobby or an amusing little man with quirky speaking habits.And it turns out, it’s not even cyanide because the taste we all associate with almonds are sweet almonds and not bitter almonds. Cyanide smells more akin to faintly chlorinated pools
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Some 25+ years ago, I helped once on a private 1.5m telescope that an enginerd was building as their retirement gift to themselves. Did the strain gage instrumentation for thermal expansion, uneven loading compensation due to orientation, all sorts of stuff like that. That was my specialty at the time (fresh out of high school).The power on site was limited – the lady (enginerd in question) hated generators so power was storage batteries and solar panels. Back in that day storage meant a few tons of lead acid batteries, quite literally. Structural heating at night was to be kept to a minimum, and I made the right call to exclude electric heating since my horror dreams included running out of power budget altogether. That proved prescient as the sensor cooling ended up using more power than budgeted – way more, someone made a mistake in the design calculations. Also back then all the cooled sensor tech wasn’t as developed as it is now.The Vintage Muppet I dont always Mahnamahna but when I do doo doot doo do doo shirt members ended up being passively cooled by enclosing them in two concentric PVC pipes and adding little RC-servo controlled vents to ventilate the outer and/or inner space as needed (my contribution). It all worked in closed loop and stabilized the off-axis deflections of the frame to well under a micron. The non-straight frame elements were enclosed in custom styrofoam coolers, again passively vented. The mirror thermal stability was done with slowly circulating water – one from a well (cold), through a storage tank, another from a solar-heated hot storage tank. The mirror had 40 thermal control zones. A buddy of mine built a clever shape sensing system for the mirror that was completely based on mechanics of materials and did not need to use an interferometer for reference – although it was interferometer validated of course. Another gal was in charge of smart optics and IIRC made some contributions to the field while developing her solution, although she didn’t really work in the field very long. The main mirror stability was needed since one design goal was to have maximum performance possible even when the adaptive optics were off line.