SPIRE Design Description - Research Services
SPIRE Design Description - Research Services
SPIRE Design Description - Research Services
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Draft <strong>SPIRE</strong> <strong>Design</strong> <strong>Description</strong> Document<br />
Figure 3-23 - PSW channel at λ = 250 µm, corrugated horn (smooth-wall case TBC). 2 profiles shown are principal<br />
sections of the response. Airy disc radius = 0.27 arcmin.<br />
Component margin,<br />
m<br />
Total geometrical footprint,<br />
diameter D<br />
47<br />
Instantaneou beam footprint,<br />
radius r<br />
Component diameter,<br />
D' = 1.2 D<br />
Figure 3-24 - Illustration of the 20% oversize rule and the comparison between component margin and instantaneous<br />
beam footprint.