Questions tagged [skyfield]

25 questions
4
votes
1 answer

Rising sign/constellation at a given time and place

I am new to astronomy, and trying to learn how to use Skyfield to calculate the rising sign/constellation (typically referred to as the Ascendant in astrology). I tried a number of approaches based on what I have learnt so far: Using GMST and…
MGL
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3
votes
1 answer

why are my Sha and Declination calculations not the same as the answers from the Nautical Almanac?

from skyfield.api import Star, load from skyfield.data import hipparcos import math with load.open(hipparcos.URL) as f: df = hipparcos.load_dataframe(f) achernar_star=Star.from_dataframe(df.loc[7588]) planets = load('de421.bsp') earth =…
sybe
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