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Zenith, 90 km Na layer. star. Stars 5 arcmin fov. 30m. Na light. 25.0m. 51.8m. 15 km. 26.7m. 44.5m. 10 km. 5 km. 37.2m. 28.3m. 0 km. 30.0m. 30.0m. Stars 5 arcmin fov. Zenith angle 45°, 90 km Na layer. 30m. Na light. height. 25.0m. 60.9m. 15 km. 26.7m. 50.6m. 10 km. 5 km.
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Zenith, 90 km Na layer star Stars 5 arcmin fov 30m Na light 25.0m 51.8m 15 km 26.7m 44.5m 10 km 5 km 37.2m 28.3m 0 km 30.0m 30.0m nelson, Na footprints
Stars 5 arcmin fov Zenith angle 45°, 90 km Na layer 30m Na light height 25.0m 60.9m 15 km 26.7m 50.6m 10 km 5 km 40.3m 28.3m 0 km 30.0m 30.0m nelson, Na footprints
Star focal plane, 30m, f/15 0.5m star Na Na focus 1.60m at 45° Na focus 2.26m, zenith zenith Image in focal plane 5 arcmin FOV Image in intermediate plane 5 arcmin FOV Star and Na footprints near the focus for 5 arcmin FOV, f/15 beam nelson, Na footprints