User Tools
operations:tsys
This wiki is not maintained! Do not use this when setting up AuScope experiments!
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
operations:tsys [2011/03/02 04:11] Stas Shabala |
operations:tsys [2011/03/08 03:01] Jim Lovell |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== Y-Factor and Tsys Measurements ====== | ====== Y-Factor and Tsys Measurements ====== | ||
| + | |||
| + | ===== Calculation ===== | ||
| + | |||
| + | A [[operations:tsys_method|description of the method used to calculate Tsys and Tcal]] | ||
| + | |||
| + | ===== Results ===== | ||
| + | |||
| + | A spreadsheet containing data and calculations is in {{:operations:hb12_tsys.xls|Hb12_Tsys.xls}}. | ||
| + | |||
| + | The following is a summary of the data so far | ||
| + | |||
| + | |||
| + | |||
| System temperature includes a number of contributions: receiver, atmosphere, CMB, plus antenna effects such as groundspill, surface imperfections etc. It can be measured by comparing observations of the sky and of a known load, | System temperature includes a number of contributions: receiver, atmosphere, CMB, plus antenna effects such as groundspill, surface imperfections etc. It can be measured by comparing observations of the sky and of a known load, | ||
| Line 23: | Line 36: | ||
| T<sub>cal,2</sub> = Y T<sub>sys</sub> - T<sub>load</sub> - T<sub>LNA</sub> | T<sub>cal,2</sub> = Y T<sub>sys</sub> - T<sub>load</sub> - T<sub>LNA</sub> | ||
| - | Measurements for Feb 28 on the Hobart 12m are given below. | ||
| - | {{:operations:hb12_tsys.xls|Hb12_Tsys.xls}} | ||
/home/www/auscope/opswiki/data/pages/operations/tsys.txt · Last modified: 2011/10/26 06:37 (external edit)
Page Tools
