Web2 days ago · ClearDarkSky brings you: Clear Sky Charts Based on a numerical weather model, Clear Sky Charts are perhaps the most accurate and the most usable forecasters … http://server1.cleardarksky.com/csk/index.html

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WebClear Sky Charts are extremely popular with amateur astronomers. They are created by Attilla Danko at cleardarksky.com using data produced by the Canadian Meteorological Center. CMC's numerical weather forecasts are unique because they are specifically designed for astronomers. But they have 763 forecast maps, so it can be a chore to find … WebOct 10, 2024 · A more comprehensive standard that uses limiting magnitude as its basis is the Bortle Dark-Sky Scale, created by amateur astronomer and Sky & Telescope writer John Bortle . It first appeared in the February 2001 issue of Sky & Telescope magazine. Bortle considered NELM alone too dependent on individual eyesight and the variable amounts … gs with locality 2021

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WebJul 15, 2024 · The Corner Bar has a 25.4mm clamp area that requires a shim for most modern mountain bike stems. Surly probably went that route to keep costs down and to provide a little more flex and compliance for comfort. The horns and drop diameter is 22.2mm to work with mountain shifter and lever clamps. The Corner Bar comes in three … Webusage: This term, though rarely used today, is perceived as patronizing, demeaning, or insulting.Its earliest uses in English show that it was a neutral, informal term, but its … WebOct 15, 2016 · ClearDarkSky says what the seeing is forecast to be, not what it is or was. Like all forecasts, it's never perfectly accurate, and it's often very wrong. As it happens, I never look at the "seeing" part of the forecast, only the transparency. Since I'm primarily a deep-sky observer, transparency matters a lot more to me. financial times wolf