The following web form is available to request changes to your approved list of targets, or to your preselected instrument setups. This form will allow ESO to handle your requests more rapidly and more efficiently.

For security reasons, this area is password-protected and you have to enter through the  ESO User Portal.

I want to request a target change or instrument setup change for my observing run

In case of problems, please contact usd-help@eso.org.