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  2. Polar alignment - Wikipedia

    en.wikipedia.org/wiki/Polar_alignment

    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 ...

  3. Northern Hemisphere - Wikipedia

    en.wikipedia.org/wiki/Northern_Hemisphere

    The glaciations that occurred during the glacial period covered many areas of the Northern Hemisphere. Northern hemisphere glaciation during the last ice ages. The setup of 3 to 4 kilometer thick ice sheets caused a sea level lowering of about 120 m. The Arctic is a region around the North Pole (90° latitude). Its climate is characterized by ...

  4. Magnetic declination - Wikipedia

    en.wikipedia.org/wiki/Magnetic_declination

    In the northern hemisphere, declination can therefore be approximately determined as the difference between the magnetic bearing and a visual bearing on Polaris. Polaris currently traces a circle 0.73° in radius around the north celestial pole, so this technique is accurate to within a degree.

  5. Six planets align in the sky on June 3: Where, how to see it

    www.aol.com/six-planets-align-sky-june-070015219...

    But the frequency of five or more planets in alignment is way less common. According to Starwalk, the last planetary alignment in the Northern Hemisphere was on April 8 during the total solar eclipse.

  6. Setting circles - Wikipedia

    en.wikipedia.org/wiki/Setting_circles

    The term Right Ascension took its name from early northern hemisphere observers for whom "ascending stars" were on the east or right hand side. In the southern hemisphere the east is on the left when an equatorial mount is aligned on the south pole. Many Right Ascension setting circles therefore carry two sets of numbers, one showing the value ...

  7. Six planets will align in the night sky on June 3. How to see ...

    www.aol.com/news/six-planets-align-night-sky...

    A great or full alignment includes all planets and occasionally Pluto. ... The parade of planets will be visible throughout the northern hemisphere and will peak on June 3.

  8. Pole star - Wikipedia

    en.wikipedia.org/wiki/Pole_star

    Northern Hemisphere circumpolar stars around Polaris, with a long-exposure producing a star trail photo. A pole star is a visible star that is approximately aligned with the axis of rotation of an astronomical body; that is, a star whose apparent position is close to one of the celestial poles.

  9. Earth's magnetic field - Wikipedia

    en.wikipedia.org/wiki/Earth's_magnetic_field

    The inclination is given by an angle that can assume values between −90° (up) to 90° (down). In the northern hemisphere, the field points downwards. It is straight down at the North Magnetic Pole and rotates upwards as the latitude decreases until it is horizontal (0°) at the magnetic equator. It continues to rotate upwards until it is ...