Occultation Portal
Stellar Occultation Campaigns by

The ERC Lucky Star Project
The ACROSS Project

The GaiaMoons Project

The whole story started when I (Y. Kilic) met my Ph.D. co-supervisor Dr. Felipe Braga-Ribas, at the Summer School on Astrometry and Astrometry Now and in the Future held at the TÜBİTAK National Observatory in Turkey in 2011. Much later, when our communication became more potent, we talked about what we can do to make occultation observation campaigns much more effective; OccultationPortal emerged with his great support and effort.
The stellar occultation technique is a unique and reliable method to investigate the size, shape, and environment around Solar System objects. One of the indispensables of this technique is multi-chord observations. Sometimes collecting observational data and equipment details from observers affects prolonged research time. For this reason, we aimed to create a common online platform where the needed data will be collected and analyzed (producing light curves/photometry) on a single center for ongoing campaign observations.
Occultation Portal is a web-based astronomical archive and analysis platform for aiming the fast, efficient, and centralized management of occultation observation campaigns called by the Lucky Star Project/Paris Observatory/LESIA and the ACROSS Project. This platform is a scientific initiative conducted in partnership with a TÜBİTAK National Observatory (Turkey), Akdeniz University (Turkey), The Federal University of Technology – Paraná (Brasil), the Paris Observatory/LESIA Lucky Star Project (France) and the Observatoire de la Côte d’Azur - Boulevard de l’Observatoire (France).
For detailed information about the Occultation Portal's software design and architecture, you can review the presentation at the 39th ESOP: PDF - Video
For academic use, please cite the paper: Y Kilic, F Braga-Ribas, M Kaplan, O Erece, D Souami, M Dindar, J Desmars, B Sicardy, B E Morgado, M N Shameoni, F L Rommel, A R Gomes-Júnior, Occultation portal: A web-based platform for data collection and analysis of stellar occultations, Monthly Notices of the Royal Astronomical Society, Volume 515, Issue 1, September 2022, Pages 1346–1357, https://doi.org/10.1093/mnras/stac1595 | NASA/ADS.
This project is powered by the following FREE/open source softwares.

Pardus GNU/Linux
Pardus is a Linux distribution developed with support from TÜBİTAK ULAKBİM.
Python is an interpreted high-level general-purpose programming language.
Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design.
The Astropy Project is a community effort to develop a common core package for Astronomy in Python and foster an ecosystem of interoperable astronomy packages.
NumPy is an open source project aiming to enable numerical computing with Python.
Matplotlib is a plotting library for the Python programming language and its numerical mathematics extension NumPy.
Photutils is an affiliated package of Astropy that primarily provides tools for detecting and performing photometry of astronomical sources.
IRAF (Image Reduction and Analysis Facility) is a collection of software written at the National Optical Astronomy Observatory geared towards the reduction of astronomical images in pixel array form.
PyRAF is a command language for running IRAF tasks that is based on the Python scripting language.
MYRaf Project
The MYRaf is a practicable astronomical image reduction and photometry software and interface for IRAF.
SExtractor (Source-Extractor) is a program that builds a catalog of objects from an astronomical image.
Javascript library to create interactive charts for web and mobile projects.


JS9 brings astronomical image display to your browser and desktop: display FITS images, tables, data cubes, multi-extension files.
NginX, is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS- and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
DataTables is a plug-in for the jQuery Javascript library. It is a highly flexible tool, built upon the foundations of progressive enhancement, that adds all of these advanced features to any HTML table.
Aladin Sky Atlas
Aladin lite is a lightweight version of the Aladin tool, running in the browser and geared towards simple visualization of a sky region.
OpenStreetMap is a collaborative project to create a free editable geographic database of the world. The geodata underlying the maps is considered the primary output of the project.
Django Ninja
Django Ninja is a web framework for building APIs with Django and Python 3.6+.
OW Cloud
Occult Watcher Cloud (OWC).
We would like to thank TÜBİTAK National Observatory (Turkey), Akdeniz University (Turkey), The Federal University of Technology – Paraná (Brasil), and Lucky Star Project/Paris Observatory/LESIA (France) for their support of this project.
Support for hardware and infrastructure is made available through the TÜBİTAK National Observatory (Turkey).
I would like to thank my friends, Murat Dindar and Mohammed Niaei Shameoni, for always being there for me and supporting me in ensuring sustainability, and H. Aziz Kayıhan for the logo design.
This page is based on the Lowell Minor Planet Services' About Page.

Questions or comments can be directed to info@occultationportal.org