Sustainable Alternatives To Paper Towels
Young and Crippen experienced a colder-than-normal first night in space, thanks to a temperature controller problem. Conditions improved on the second night. They prepared their meals using an onboard food warmer, although a larger and more elaborate galley was planned for later missions. Minor problems were experienced with a suction hose on the toilet, which stubbornly refused to work properly. When the time came to return to Earth, Young and Crippen - rather ignominiously for seasoned space explorers - were obliged to stuff paper towels into the hose to prevent it from overflowing and use the urine-collection devices in their pressure suits.
Cleaning precision optics is not the same as cleaning household windows or mirrors. Remember that the lenses and mirrors of your telescope are tasked with collecting miniscule amounts of light, then amplifying, magnifying and focusing that light into a viewable image. The slightest damage to the glass surface of your objective lens or mirror can ruin it as a viable scientific instrument. It is simply not acceptable to pick up a bottle of Windex and a paper towel and try to wipe the lens mirror surface clean. An aviation mechanic who I was assisting in an inspection once chastised me about using the right tool for the right job. There are tools you use on cars and tools you use on airplanes. The same is true for cleaning a telescope. There is a right way to clean a mirror in your bathroom. That is by no means the right way to clean the mirror of your telescope. Let's discuss how it should be done.
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