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A simple and small python package for handling and processing heliospheric satellite data. The current primary features are automatic data downloading & crude processing for DSCOVR, MES, PSP, STA, STB, VEX and WIND (plus BEPI and SOLO once data products are publicly available). Furthermore all related SPICE kernels are downloaded automatically.


Install the latest version manually using git:

git clone
cd HelioSat
pip install .

or from PyPi with pip install HelioSat.

Basic Usage

Import the heliosat module and create a satellite instance:

import heliosat

wind_sat = heliosat.WIND()

This will automatically download and load any required SPICE kernels (using spiceypy). Note that kernel or data files will be stored in ~/.heliosat by default. As this may use up alot of disk space you can alternatively change the default path by setting the environment variable HELIOSAT_DATAPATH.

Querying raw data in a certain time window can then be done using:

import datetime

t_start = datetime.datetime(2010, 1, 1)
t_end = datetime.datetime(2010, 1, 3)

t_raw, data_raw = wind_sat.get_data_raw(t_start, t_end, "mfi_h0")

Alternatively processed data at specific times in a specific reference frame can be queried using:

# observer datetimes for an entire week
obs = [t_start + datetime.timedelta(minutes=12 * i) for i in range(0, 7 * 24 * 5)]

# smoothing using a gaussian kernel and a smoothing scale of 5 minutes, the data is also cached
t_sm, data_sm = heliosat.get_data(obs, "mfi_h0", frame="J2000", smoothing="kernel", cache=True,
                                  return_datetimes=True, remove_nans=True)

If particular data columns are not being read out but are present within the data files, they can be added by setting the extra_columns parameter.

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