South Pole Telescope Design
8 December 2003

South Pole Telescope Design

SPST271

This is the best I can do so far with two mirrors after the chopper.  The field of view is about 0.4 degrees in diameter, and the quality of focus is suitable for 2mm work, but not for shorter wavelengths.  The Lyot stop is not as clean as SPST214.

Figure 1 - SPST271, all fields

Figure 2 - SPST271 center field only

Figure 3 - Detail of Figure 1

Figure 4 - detail of Figure 2.

Figure 5 - Same as Figure 4, but field 5 only.

Figure 6 - Same as Figure 5, but field 6 only.

Figure 7 - Spot diagram at focus.

Figure 8 - rms vs. field in x direction

Figure 9 - rms vs. field in y direction.