The www.citiesatnight.org is a proyect made by voluntiers of diferent organizations and citizens.

Images thanks to the astronauts of:

NASA, ROSCOSMOS, ESA, JAXA and CSA-ASC

Also help on the promotion from:

The satellite images came from:

 The Gateway to Astronaut Photography of Earth (NASA)

The main development and coordination come from  Guaix- Dark Skies:

Alejandro Sánchez de Miguel, José Gómez Castaño, Jaime Zamorano , Sergio Pascual, Jesús Gallego,Carlos Tapia,Lucía Garcia and Francisco Ocaña. (UCM) - 

Suport at Crowdcrafting:

Daniel Lombraña y Alejandro Domínguez Bayo

Contributions from  Medilab-Prado:

Beatriz Fernández - support CSS

Pablo Ripolles - support html5

Juan Rodrigo Solera Sánchez-Seco y Marta Vela Ibañez - Iconos at Dark Skies ISS

Light pollution modeling:

Martin Aubé (CEGEP de Sherbrooke),Canada

Traduccions:

Rafaella Marino (UCM) - Italian

Alexandre Bouquin (UCM) - French and Japanese

Nobuaki Ochi(Toyo Uni) - Japanese

Salvador Ribas (PAM) - Catalan

Olga Borisevich - Russian (Parcial)

Fernando Saldanha - Portuguese.

Helga Kuechly (Leibniz-Institute of Freshwater Ecology and Inland Fisheries - Berlin) - German

Victor Tilve Rúa - Gallician (USC & Calidade do Ceo Nocturno)

Fernando Jauregui & Karmele -Eukera/Basque - Planetario de Pamplona 

Google traslator -Basque, Chinese, Arabic (You can contribute!)

Other contributions:

Peter Caltner(@PC0101)

Esteban Gonzalez (Gloria)

Francisco Sanz(@FSanzGarcia)

Marian Lopez Cayuela (UCM)

Guillermo Martín Martínez(UCM)

Group of scientific interest:

Martin Aubé (CEGEP de Sherbrooke),Canada

Jason PunShing Chun (University of Hong Kong) - China *

Brian Espey (Trinity College, Dublin) - Ireland

Fabio Falchi (Istil Light Pollution Science and Technology Institute) - Italy

James Hale (University of Birmingham) - United Kingdom

Scott Kardel (IDA) - USA

Christofer Kyba(Leibniz-Institute of Freshwater Ecology and Inland Fisheries - Berlin) - Germany

Helga Kuechly (IGB - Berlin) - Germany

Dorien Lolkema (RIVM National Institute for Public Health and the Environment - Utrecht) -Netherlands

Thomas Posch (Universität Wien) - Austria

Wim Schmidt (Sotto le Stelle - Utrecht) - Netherlands

Connie Walker (NOAO-Tucson) - USA

Günther Wuchterl (Astrophysikalisches Institut und Sternwarte Jena-Universities) - Austria

Dietrich Henckel (TU Berlin)

Fabio Manfredini (PoliMili)

Nobuaki Ochi (Toyo University) - Japan

Alberto Castellón (Universidad de Málaga). - Spain

Institutional contributions:

Universidad Complutense de Madrid (Matrix of the core group and free hosting and help on the difusion)

NASA (Hosting of the pictures and matrix of the austronauts who take the pictures, help on the difusion)

ESA (Matrix of the austronauts who take the pictures, help on the difusion)

CSA-ASC (Matrix of the austronauts who take the pictures, help on the difusion)

Sociedad Española de Astronomía (help to pay the travel to a Meeting to NYC (meeting with CartoDB, buy material for Cities at Night and meeting with Kickstarter).

Kickstarter (Help with the accommodation on New York and a Workshop about crowdfunding)

Tisch NYU (Volunteers help with designs and Crowdfunding campaign planification)

Cartodb (Free hosting)

Google Outreach (Free hosting until january 2016)

MediaLab - Prado (Volunteers help on the desing of the web proyects)

IDA - (help on the promotion, Dark Sky defender price)

Celfosc - (help on the promotion)

Cegep of Sherbrooke - (support on scientific activities)

IAU - (grant to present the results on the IAU meeting, and helpo on the promotion)

Planetario de Pamplona - (translation and help on the promotion)