SCUBA-2 with FTS and 80K blackbody source
SCUBA-2 with FTS and 80K blackbody source
SCUBA-2 with FTS and 80K blackbody source
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Tel =<br />
Here is a table that now summarises all the relevant parameters<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 />
16<br />
0 1 2 3 4 5 6 7<br />
"Surface" "Temperature" "emissivity" "trans" "net trans" "AOmega" "Pback "NEPph^2(10^-32 (pW)" W^2 per Hz)"<br />
"Sky" 270 0.171 0.829 0.197 0.162 1.427 0.067<br />
"Primary-sec" 280 0.126 0.874 0.226 0.162 1.208 0.06<br />
"Cabin optics" 280 0.021 0.979 0.231 0.162 0.203 9.578·10 -3<br />
"<strong>FTS</strong>" 280 0 0.437 0.528 0.162 7.343 0.418<br />
"Feed optics" 280 0.016 0.984 0.536 0.162 0.354 0.017<br />
"Window" 280 0.02 0.98 0.547 0.162 0.464 0.022<br />
"Blocker" 150 0.05 0.95 0.576 0.162 0.637 0.031<br />
"optic" 4 5.217·10 -3 0.995 0.579 0.162 1.177·10 -4 5.502·10 -6<br />
"optic" 4 5.217·10 -3 0.995 0.582 0.162 1.183·10 -4 5.531·10 -6<br />
"CS-filter" 1 0.05 0.95 0.612 0.162 3.607·10 -9 1.686·10 -10<br />
"CS aperture" 1 1 1 0.612 5.116 2.283·10 -6 1.067·10 -7<br />
"dichroic" 1 0.05 0.95 0.645 5.116 1.202·10 -7 5.617·10 -9<br />
"field mirror" 1 5.217·10 -3 0.995 0.648 5.116 1.261·10 -8 5.892·10 -10<br />
"edge filter" 0.1 0.1 0.9 0.72 5.116 1.855·10 -73 8.671·10 -75<br />
"b<strong>and</strong>pass" 0.1 0.1 0.9 0.8 5.116 2.061·10 -73 9.634·10 -75<br />
"detector" 0.1 0.2 0.8 1 5.116 0 0<br />
nrt := rows( Tel_optics)<br />
nrt = 4<br />
Compute transmission to window<br />
including bolometer efficiency:<br />
"System" transmission (including<br />
telescope but not atmosphere):<br />
twindow := Tel ⋅Tel<br />
twindow = 0.037<br />
nrt−1, 4 nrt−1, 5<br />
tdet := Tel t<br />
nrt, 4<br />
det = 0.528<br />
tsys := Tel t<br />
2, 4<br />
sys =<br />
0.226
Change language