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- Newest astropy Questions - Stack Overflow
I'm using astropy, matplotlib, skyfield and astroquery to create sky charts with Python With skyfield I do the stereographic projection of the sky With astropy I use WCS, something like this: fig =
- AstroPy: how to transform a SkyCoord object in the GCRS frame to the . . .
In this case, instead of using get_sun, which always returns coordinates with a geocentric origin, you can use astropy coordinates get_body which allows one to specify the location of the observer using an EarthLocation object
- How to convert Earth Centered Inertial (ECI) coordinates to Earth . . .
Using the correct time for the given position is important to get the transformation from GCRS to ITRS right So if you have the time corresponding to the position in xyz stored in an astropy time Time object called now, you should use itrs = coord GCRS(cartrep, obstime=now) transform_to(coord ITRS(obstime=now)) I've edited my answer to
- Astropy - Ra, dec to AltAz conversion (in degrees)
Good evening, I have come across an example where Ra, dec are converted to AltAz using time The code is as follows: from astropy coordinates import EarthLocation,SkyCoord from astropy time import
- Filter astropy table by the values in a given column
As mentioned in my comment, this answer is based on information from selecting records from a table I use the fits file provided in the astropy distribution
- python - astropy optimise get_body performance - Stack Overflow
I'm using astropy and I have to call get_body a lot I use NASA's de430 ephemerides The first call to get_body is always slow, because it's loading the ephemerides The subsequent calls, however, are also slow Not as slow as the first one, but still too slow for me because I have to call get_body a lot Is there a way to speed things up?
- astropy - How to define axis names in WCS - Stack Overflow
I'm trying to use WCS for simple linear, non-celestial axes These are actually just the U,V coordinates representing the Fourier transform of an image import astropy wcs as wcs w=wcs WCS(naxis=2
- astropy - How to tell `photutils` to plot only apertures which satisfy . . .
I'm following an example in the photutils documentation to detect sources in an image: from astropy stats import sigma_clipped_stats from photutils datasets import load_star_image import numpy as np import matplotlib pyplot as plt from astropy visualization import SqrtStretch from astropy visualization mpl_normalize import ImageNormalize from photutils detection import DAOStarFinder from
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