Science Operations

MODS Controller Upgrade

Posted Aug 19, 2025

Announcements

MODS  Controller Upgrade – Instrument Availability Delayed
update: Nov 26th

The MODS instruments underwent controller upgrades this summer, replacing the legacy head electronics and a set of aging computers. These upgrades were carried out to ensure the long-term reliability, robustness, and stability of the instruments. Additionally, preliminary testing shows a significant reduction in readout overheads.

Significant progress ​was made on the controller configuration while both MODS were off the telescope for the PEPSI-POL block, ​and both MODS ​will remain in the high bay ​while this work continues​. They are scheduled to be mounted in the second week of December. Some time will be required for on-telescope testing and verification before they can be released for science, possibly in the second half of December.