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information_for_astronomers:rx:p200mm [2013/09/30 11:59]
bwinkel [Spectroscopy modes and resolution]
information_for_astronomers:rx:p200mm [2015/06/23 12:59] (current)
akraus
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 ^ 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 ^ ^ 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 ^
-|1.400 |A |LCP |1.|21 |1.55 |14 |54 |2.|75 |553 |June 2008 +|1.400 |A |LCP |5.|20 |1.54 |13 |54 |1.88 |66 |580 |June 2015
-|1.400 |B |RCP |1.|27 |1.55 |18 |53 |2.|74 |553 |June 2008 +|1.400 |B |RCP |5.|20 |1.56 |13 |54 |1.88 |66 |580 |June 2015 
-|1.660 |A |LCP |1.|26 |1.55 |17 |53 |2.|76 |473 |June 2008 +|1.660 |A |LCP |1.|18 |1.54 |12 |54 |1.85 |65 |490 |October 2013 
-|1.660 |B |RCP |1.|27 |1.55 |18 |52 |2.|75 |473 |June 2008 |+|1.660 |B |RCP |1.|19 |1.52 |13 |53 |1.85 |65 |490 |October 2013 |
  
 ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^
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 **Comments:​** **Comments:​**
    * Strong interferences can occur in this frequency regime, eg. between 1.50 and 1.64 GHz!     * Strong interferences can occur in this frequency regime, eg. between 1.50 and 1.64 GHz! 
 +   * There are two values for the noise cal, different by about 6dB. See the table below to learn which receiver version uses which value.
  
 ==== Version description for OBSINP ==== ==== Version description for OBSINP ====
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 |  100 | 32768 |  1720 |    3.1 |  0.532 |  0.617 | |  100 | 32768 |  1720 |    3.1 |  0.532 |  0.617 |
  
 +BW    ... band width\\
 +nchan ... number of spectral channels\\
 +nu    ... center frequency\\
 +Df    ... Channel separation (in frequency)\\
 +Dv    ... Channel separation (in velocity)\\
 +dv    ... Velocity resolution (dv=1.16*Dv)
  
 ==== Tcal measurements ==== ==== Tcal measurements ====
  
 +** Tcal as measured in November 2014 **\\
 +{{:​information_for_astronomers:​rx:​18cm_tcal_nov14.png|}}
 +
 +** Tcal as measured in June 2013 **\\
 {{:​information_for_astronomers:​rx:​18cm_tcal.png|}} {{:​information_for_astronomers:​rx:​18cm_tcal.png|}}
  
 Note that although the lines continue it is not possible to observe at frequencies between 1425 MHz and 1560 MHz. Note that although the lines continue it is not possible to observe at frequencies between 1425 MHz and 1560 MHz.
information_for_astronomers/rx/p200mm.1380535160.txt.gz · Last modified: 2013/09/30 11:59 by bwinkel