4.33. skys_to_pixels¶

Calculates the pixel coordinates corresponding to the given sky coordinates.

Fits.skys_to_pixels(skys: List[SkyCoord] | SkyCoord) → pd.DataFrame¶

Calculates the pixel coordinates corresponding to the given sky coordinates.

Parameters

skys (Union[List[SkyCoord], SkyCoord]):
The sky coordinate(s) for which pixel coordinates are to be calculated.

Returns

pd.DataFrame
A DataFrame containing the pixel coordinates corresponding to the sky coordinates.

Raises

Unsolvable
When the header does not contain a valid WCS solution.

4.33.1. Example:¶

from myraflib import Fits
from astropy.coordinates import SkyCoord

fits = Fits.sample()
sky = SkyCoord(85.39691915, -2.58041503, unit='deg')
pixels = fits.skys_to_pixels(sky)