SCUBA-2 with FTS and 80K blackbody source
SCUBA-2 with FTS and 80K blackbody source
SCUBA-2 with FTS and 80K blackbody source
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tp := Telpower( airm)<br />
Ptot := tp + Pinst 2<br />
NEPinst 5.576 10 33 − watt<br />
×<br />
2<br />
2 2<br />
= NEPtot := NEPinst + NEPph( airm)<br />
Hz<br />
( )<br />
skytrans := Trans airm, pwv1,<br />
ν , Δν<br />
The detector NEP is the total minimum background (0.5 mm pwv @ 1 airmass)<br />
photon noise NEP multiplied by Ratio<br />
The overall NEP is hence:<br />
j := 0.. 15<br />
And the NEFD is therefore:<br />
NEPoverall :=<br />
⎡<br />
⎣<br />
( NEPtot)<br />
2<br />
+<br />
( ) 2<br />
NEP det<br />
⎤<br />
⎦<br />
0.5<br />
NEP overallj 10 29<br />
⋅<br />
NEPtot =<br />
NEFD<br />
j<br />
−16 π<br />
ηmod⋅ηtel⋅Atel⋅tsys exp<br />
2<br />
⋅ σ 2<br />
⋅<br />
λ 2<br />
:=<br />
⎛ ⎞<br />
⋅ ⎜ ⎟⋅Δν⋅skytrans<br />
j<br />
⎜<br />
⎝<br />
⎟<br />
⎠<br />
0<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
0<br />
7.873·10 -17<br />
7.966·10 -17<br />
8.052·10 -17<br />
8.18·10 -17<br />
8.294·10 -17<br />
8.414·10 -17<br />
8.537·10 -17<br />
8.658·10 -17<br />
8.776·10 -17<br />
8.888·10 -17<br />
8.994·10 -17<br />
9.091·10 -17<br />
9.18·10 -17<br />
9.255·10 -17<br />
9.327·10 -17<br />
9.406·10 -17<br />
watt<br />
Hz
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