Zorro available with a single camera

The Zorro blue filter wheel, that had been faulty since last March, was successfully replaced last week. An unfortunate side-effect of the procedure is that the red and blue cameras are now misaligned by about 6 arcsecods, a shift bigger than the speckle field-of-view, which makes simultaneous observations with both cameras in speckle mode impossible. Both cameras are working fine, only independently. New PIs should therefore indicate which camera they want to use. Both cameras can still be used, but this will imply doubling the requested time. Preparations are underway to realign the cameras before the first Zorro run of 2021B.