earth - How to calculate the altitude of the Celestial Equator from …
May 30, 2018 · Perhaps you have heard that the altitude of the celestial pole (3 in the figure below) is equal to your latitude. In other words, angle 5 is the same as your latitude. Of course, the angle between the celestial pole (3) and the celestial equator (4) is 90 degrees (angle 6). From this, you should be able to calculate the angle of the equator ...
What is the connection between declination and latitude?
Dec 26, 2021 · The celestial equator is a projection of the terrestrial equator on the celestial sphere. So doesn't that mean the geographical latitude and the declination will be "exactly" equal, as they are measured from the same reference point (Celestial Equator = Geographical Equator)? $$\lambda = \delta \pm (90° - \rm{Altitude})$$
Could someone explain RA/dec in simple terms?
From the Celestial Equator it is 90° northward(+) to the North Celestial Pole, and 90° southward(-) to the South Celestial Pole. So we can measure from +90° (northward) to -90° (southward) along that line of longitude, from the Celestial Equator. (Don't be confused by "positive declinations"; 45° of declination is northward from the ...
python - How to plot celestial equator in galactic coordinates?
Oct 16, 2020 · I'm trying to plot celestial equator in galactic coordinates. Here is my code (based on this answer):. import matplotlib.pyplot as plt import seaborn as sns; sns.set() import numpy as np from astropy.coordinates import SkyCoord from astropy import units as u ra_all = np.linspace(-180, 180, 100) dec_0 = np.zeros(100) # Transform equatorial coordinates to galactic eq = …
orbital mechanics - Deriving the apparent angular speed of a star ...
Mar 23, 2022 · As you mention, the angular speed of the celestial sphere on the equator is 0.25° per minute. The speed on a declination circle is proportional to the circumference of that circle, relative to the circumference of the celestial equator. Of course, the circumference of a circle is proportional to its radius.
How do you draw the ecliptic on a celestial sphere sketch?
Jul 1, 2019 · Once you've determined where on the celestial equator to mark ♈ and ♎, then you can draw the ecliptic through them as another great circle 23.4° oblique to the equator. The ecliptic runs north of the equator east of ♈, and south of the equator east of ♎, in the sense that eastward is counterclockwise as seen from the north celestial pole.
Can you still see Polaris even if you are in the south pole?
Jul 1, 2016 · The northern star will generally speaking disappear below the horizon when you are at around the equator. There is no "southern star" to orient yourself on the southern hemisphere, but there are a number of rules of thumb to find the south celestial pole on the southern hemisphere as well, several of them involving the "southern cross", or the ...
How does the Moon look like from different latitudes of the Earth?
Jan 25, 2018 · At the equator horizontaly. And somewhere in the middle between the equator and the pole tilted under some angle. You would also see the Moon much lower on the horizon when standing near the poles and going near the zenith when standing on equator.
How to align equatorial mount in the Southern Hemisphere?
Mar 16, 2017 · Now aim at a star that's near the celestial equator low in the eastern sky. If the star drifts south, the polar axis points too low. If the star drifts north, the polar axis points too high. Again, shift the polar axis accordingly. Now go back and repeat from the beginning, because each adjustment throws the previous one slightly off.
declination - How to calculate the nodal precession range of the …
Nov 14, 2021 · The large black circle is the ecliptic. The blue plane is the celestial equator, the orange plane is the lunar orbital plane. The alpha parameter controls the transparency of the lunar & ecliptic planes; set it to zero if you want unfilled circles for those planes. The blue ball on the equator is the First Point of Aries.