ESAC Solar Observatory (RA)

A twin portable telescope and mount set up is also available for testing, specific observations and dual observations. This (portable) observatory is called "RA", and it was used during the Venus Transit 2012, ISS crossing observations, the Mercury Transit 2016 and for the Solar Eclipse 2017.

Michel Breitfelner, Miguel Perez Ayucar (left) and Manuel Castillo, Miguel Sanchez Portal (right) with the portable units during the Venus transit 2012 in Svalbard and Canberra 

You can see more about the technical specifications here.