South Pole Telescope Design
8 December 2003

 

South Pole Telescope Design

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bulletSPST320
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bulletSPST148
bulletSPST152
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bulletSPST129 summary
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SPST152 is an attempt to modify SPST148 to provide an image of the primary inside the dewar.

Figure 1. --- Side view, all fields.  Two mirrors have been added to provide image of primary inside dewar.

Figure 2.  Large side view, center field only.

Figure 3 --- Detail of Fig. 1.  Some interference between beams inside dewar.

Figure 4. --- Detail of Fig. 2

Figure 5 -  Dewar window for both SPST148 and SPST152.  Only 240mm in diameter.  Window is at an astigmatic approximate image of primary.

Figure 6 -  Front view, all fields.

Figure 7 -  Spot diagram for SPST152

Figure 8.  Full-field spot diagram

Figure 9 -  rms vs. field for 2mm wavelength.  Does not achieve 1/10th wave at 2 mm wavelength.