STS-54 - 4" - Eagle Crest Emblem Inc.

STS-54 was a Space Transportation System (NASA Space Shuttle) mission using orbiter Endeavour. This was the third flight for Endeavour, and launched 13 January 1993.

The primary payload was the fifth Tracking and Data Relay Satellite (TDRS-F) which was deployed on day one of the mission. It was later successfully transferred to its proper orbit by the Inertial Upper Stage booster.
Also carried into orbit in the payload bay was a Hitchhiker experiment called the Diffuse X-ray Spectrometer (DXS). This instrument collected data on X-ray radiation from diffuse sources in deep space.

The Eagle Crest emblem version of the STS-54 patch can be identified by the white patch under the tip of the eagle's wing on the border. Also some versions have a red tinted plastic coated backing.

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