Astropy Essentials

FITS: Flexible Image Transport System

The FITS format is used for storing astronomical data in a tabular format.

• A file in FITS contains a series of Header Data Units (HDUs), each containing two components: an ASCII text header and the binary data.

Installation

With pip

pip install astropy

With conda

 conda install astropy

Constants

 astropy.constants

Gravitational Constant

from astropy.constants import G

Units and Quantities

astropy.units

N-Dimensional Datasets

astropy.nddata.CCDData