Astronomical seeing
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 Astronomical observatories are generally situated on mountaintops, as the air at ground level is usually more convective. A light wind bringing stable air from high above the clouds and ocean generally provides the best seeing conditions (telescope shown: NOT). |
Astronomical seeing refers to the blurring and twinkling of astronomical objects such as stars caused by turbulent mixing in the Earth's atmosphere varying the optical refractive index. The astronomical seeing conditions on a given night at a given location describe how much the Earth's atmosphere perturbs the images of stars as seen through a telescope.
- See also: Wikipedia
- Related: Clear Sky Chart, Mirage, Transient lunar phenomenon
| Limited to midnight seeing prediction for every lo... Limited to midnight seeing prediction for every location in Europe, South America and Southern Africa (look at 'Sky' and click the seeing tab) www.meteoblue.com - Web |
| This is an example of prediction This is an example of prediction pages.unibas.ch/geo/mcr/3d/meteo/seeing/nmm22/index.htm - Web |
| Seeing forecasts for North America Seeing forecasts for North America www.weatheroffice.ec.gc.ca/astro/seeing_e.html - Web |
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| Seeing forecasts for Mauna Kea, Hawaii Seeing forecasts for Mauna Kea, Hawaii mkwc.ifa.hawaii.edu - Web |
