CIF meaning in Space Science ?

The Central Instrumentation Facility (CIF) was a building in the Kennedy Space Center industrial area that functioned as the core of instrumentation and data processing operations during the Apollo program and the early years of the Space Shuttle program. It centralized the handling of the center's data including offices, laboratories and test stations; and housed general instrumentation activities serving more than one launch complex. The CIF also included the Central Timing Facility, where a precision clock drove countdown clocks and other timing devices at KSC that required a high degree of accuracy.

The CIF also housed computers and other electronic equipment for reduction of telemetry data, analysis, and transmission to other NASA centers. The three-story structure of approximately 134,335 sq ft (12,480.1 m2) just west of the KSC Headquarters Building was one of the most distinctive buildings in the KSC Industrial Area with its rooftop array of various antennas.

The CIF was left dormant during the intermediate part of the space shuttle program (as other facilities such as the launch control center managed most of the instrumentation in the 2000s), and fell into disrepair. In September 2017, all the equipment inside was donated to the visitor complex and storage facilities, while the disused building was eventually demolished in October.