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In the Northern Hemisphere, rough alignment can be done by visually aligning the axis of the telescope mount with Polaris.In the Southern hemisphere or places where Polaris is not visible, a rough alignment can be performed by ensuring the mount is level, adjusting the latitude adjustment pointer to match the observer's latitude, and aligning the axis of the mount with true south or north by ...
In contour plowing, the ruts made by the plow run perpendicular rather than parallel to the slopes, generally furrows that curve around the land and are level. This method is also known for preventing tillage erosion. [2] Tillage erosion is the soil movement and erosion by tilling a given plot of land. [3]
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Polaris then recalled the sleds and quickly developed a new prototype to avoid bankruptcy. [8] The new model, the 1965 Mustang, became a hit as a family snowmobile and boosted Polaris sales. Polaris continued to develop snowmobiles similar to this model throughout the 1960s-1970s, and went on to become one of the leaders in the snowmobile industry.
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Polaris components as seen by the Hubble Space Telescope. Polaris Aa is an evolved yellow supergiant of spectral type F7Ib with 5.4 solar masses (M ☉). It is the first classical Cepheid to have a mass determined from its orbit.