2004 june 26 nelson, Na footprints 1

30m

0 km

5 km

15 km

10 km

Stars 5 arcmin fovZenith, 90 km Na layer

51.8m

44.5m

37.2m

30.0m

25.0m

26.7m

28.3m

30.0m

Na light

star

2004 june 26 nelson, Na footprints 2

30m

0 km

5 km

15 km

10 km

Stars 5 arcmin fov Zenith angle 45°, 90 km Na layer

60.9m

50.6m

40.3m

30.0m

25.0m

26.7m

28.3m

30.0m

Na light

height

2004 june 26 nelson, Na footprints 3

Star focal plane, 30m, f/15 0.5m

Na focus2.26m, zenith

Image in focal plane5 arcmin FOV

Image in intermediate plane5 arcmin FOV

Na

star

Na focus1.60m at 45°

zenith

Star and Na footprints near the focus for 5 arcmin FOV, f/15 beam