‘Star trackers’ and components therefor, as follows: N.B.: SEE ALSO 7A104. a. ‘Star trackers’ with a specified azimuth accuracy of equal to or less (better) than 20 seconds of arc throughout the specified lifetime of the equipment; b. Components specially designed for equipment specified in 7A004.a. as follows: 1. Optical heads or baffles; 2. Data processing units. Technical Note: ‘Star trackers’ are also referred to as stellar attitude sensors or gyro-astro compasses.

‘Star trackers’ and components therefor, as follows: (a) ‘Star trackers’ with a specified azimuth ‘accuracy’ of equal to or less (better) than 20 seconds of arc throughout the specified lifetime of the equipment; (b) Components specially designed for equipment specified in item (a), as follows: 1. Optical heads or baffles; 2. Data processing units. Technical note: ‘Star trackers’ are also referred to as stellar attitude sensors or gyro-astro compasses.

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