Differences

This shows you the differences between two versions of the page.

--- information_for_astronomers:rx:s60mm [2013/11/27 22:38]
bwinkel [Tcal and Tsys measurements]
+++ information_for_astronomers:rx:s60mm [2023/12/18 22:10] (current)
akraus
@@ Line 6: / Line 6: @@
 ^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ FWHM [arcsec] ^ Last update ^
-|4.850 |A / B |	LCP / RCP |1.8 |27 |1.55 |18 |53 |2.4 |63 |146 |June 2008|
+|4.850 |A / B |LCP / RCP |1.8 |27 |1.55 |18 |53 |2.4 |63 |146 |June 2008|
 ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^
-|A0 = 0.97323|A1 = 1.2702E-3|A2 = -1.5059E-5|May 2004|  |
+|A0 = 0.9870|A1 = 8.692E-4|A2 = -1.453E-5|Aug 2023|  |
-|A0 = 0.995|A1 = 5.2022E-4|A2 = -1.27874e-05|Feb 2008|  |
 **Comments:**
   * The values for LCP and RCP do not differ significantly.
-  * The new gain curve (Feb 2007) was corrected for opacity.
+  * The opacity is usually very small. Typical zenith tau values are < 0.01.
-  * If no other information about the opacity is available a typical zenith tau value of about 0.016 should do a good job.
 ==== Version description for OBSINP ====

Effelsberg 100m Teleskop