Which instrument bay did the COSTAR unit slot into, replacing the original component?

Answer

The Solar Ultraviolet Occultation Project (SUOP) instrument

The COSTAR unit was designed to slot into one of the telescope’s axial instrument bays, specifically replacing the original Solar Ultraviolet Occultation Project (SUOP) instrument.

Which instrument bay did the COSTAR unit slot into, replacing the original component?

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