64 lines
3.0 KiB
Markdown
64 lines
3.0 KiB
Markdown
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# STVID
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**stvid** is a set of *python* programs to detect and identify satellite tracks on observations of the night sky, and measure the satellite positions to determine and/or update their orbits.
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## Background
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This software will take over the satellite tracking functionality of C.Bassa's [sattools](https://github.com/cbassa/sattools). By porting the functionality to *python*, and using [astropy](https://github.com/astropy/astropy), and [opencv](https://opencv-python-tutroals.readthedocs.io/en/latest/), the software is indented to be easier to install and operate.
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This repository is currently used for development, and relies, for the moment, on programs from the [sattools](https://github.com/cbassa/sattools) repository (namely `satid`).
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## Installation
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**stvid** handles requirements using pip. You can install requirements by running :
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`pip install -r requirements.txt`
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Consider using a VirtualEnv to run stvid on a separate python virtual environment.
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### Additional requirements
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* [Hough3dLines](https://gitlab.com/pierros/hough3d-code)
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* `hough3dlines` needs to be executable in your path
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* [Sextractor](https://github.com/astromatic/sextractor)
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* `sextractor` needs to be executable in your path
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* [Astromentry.net](https://github.com/dstndstn/astrometry.net)
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* `solve-field` needs to be executable in your path, with index files appropriate for your FOV
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* [ZWO ASI SDK](https://astronomy-imaging-camera.com/software-drivers) if using a ZWO camera
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## Configuration
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* Copy the `configuration.ini-dist` file to `configuration.ini`
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* Edit `configuration.ini` with your preferred settings
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* Make sure ST_DATADIR is set as an env variable pointing to the /data folder of sattools
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## Running
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TBD
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## Todo
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Features to be implemented.
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#### High priority
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* ~~Use sunset/sunrise times for starting/stopping data acquisition.~~
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* ~~Automatic astrometric calibration.~~
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* ~~Recognize unidentified satellite/meteor tracks using [3D Hough transform](http://www.ipol.im/pub/art/2017/208/).~~
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#### Medium priority
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* Pause data acquisition of the current line-of-sight (alt/az) is in the Earth's shadow for a particular orbital altitude.
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* Investigate sensitivity loss of `significance=(max-mean)/sigma` if the four frame images are stored as 8bit integers instead of floats.
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#### Low priority
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* Implement python based star finding (stick with *source extractor* for now).
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* Migrate to [python based SGP4/SDP4 algorithms](https://github.com/brandon-rhodes/python-sgp4)
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* Use masks to mask unilluminated CCD areas.
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* Investigate automatic submission of IOD measurements to [SeeSat-L](http://www.satobs.org/seesat/).
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* ~~Migrate user settings to a configuration file.~~
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## Run acquisition at startup
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* Add user to video group (`sudo adduser <username> video`).
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* Add video device to udev rules (add `SUBSYSTEM=="video1", GROUP="video", MODE="0660"` in `/etc/udev/rules.d/10-webcam.rules`).
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* Create start up script in `/etc/init.d`. Call capture script as user with `su <username> -c "acquire.py"`.
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## License
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© 2018-2022 Cees Bassa
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Licensed under the [GPLv3](LICENSE).
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