This repository contains httm, a library for converting between raw Transiting Exoplanet Survey Satellite (TESS) FITS images to calibrated FITS images and back.

A raw TESS FITS image is an image taken by either the space craft or the CCD testing systems used prior to launch, and measured in Analogue To Digital Converter Units (ADU).

Calibrated FITS images are converted from raw FITS images, or created synthetically by tools like SPyFFI. They have electrons as units rather than ADU and try to compensate for systematic errors introduced by the electronics.

To install httm, type at the command line:

pip install httm

See the Official Online Documentation

See the Development Documentation

Copyright (C) 2016, 2017 John Doty and Matthew Wampler-Doty of Noqsi Aerospace, Ltd.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Please file bugs and issues on the Github issues page for this project.