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Script to reproduce figures of Lawler, Boley & Rein 2021. Source code of web app.

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Visibility Predictions for Near-Future Satellite Megaconstellations: Latitudes near 50 Degrees will Experience the Worst Light Pollution

This repository contains the code to reproduce the figures of S. M. Lawler, A. C. Boley, H. Rein (2021) and the code for the webapp currently running at http://megaconstellations.hanno-rein.de.

Directories

/data

The /data directory contains two data files. One lists 23 observations of starlink satellites. The other contains a list of all bright stars in the Hipparcos catalogue.

/model

The mega.py file in this directory includes the code for out model. It contains data for all satellite constallations, load the data into REBOUND, and then calculates the location of the satellites in the night sky given a location, date, and time.

/paper

This directory includes Jupyter notebooks to recreate the figures of S. M. Lawler, A. C. Boley, H. Rein (2021). The Jupyter notebook make use of the data files in /data and the model in /model/mega.py.

/webapp

This directory contains the code required to run the interactive webapp running at http://megaconstellations.hanno-rein.de. It requires flask, rebound, numpy, and matplotlib as well as the data files in /data and the model in model/mega.py on the server side. It uses jquery on the client side. Note that when run for the first time, the app creates several binary REBOUND files to later reload the satellite data more quickly. These binary files are only a cache and can be deleted at any time.

iOS App

You might also be interested in the iOS app Mega Constellations.

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic License.

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Script to reproduce figures of Lawler, Boley & Rein 2021. Source code of web app.

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