ESO logo outline black
Specifically to be used on photos with a light background, when the standard logo cannot be used. This ESO logo has a transparent background.
ESO's logo is protected and may not be used or reproduced without prior and individual written consent of ESO.
This logo is not available for sale.
The logo should never be used on a background with the same colour.
The contrast between the logo and the background should always be superior to 50%.
The logo proportions should not be changed.
The elements that compose the logo should not be removed and the colours should not be altered