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information_for_astronomers:user_guide:reduc_maps [2012/05/09 14:45]
127.0.0.1 external edit
information_for_astronomers:user_guide:reduc_maps [2016/02/22 13:11] (current)
hafok
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 The raw data of the 100m Effelsberg telescope is stored in MBFITS-Format. In Effelsberg the files are located in the directory /daten/Raw which should be available on every **Observer-PC**. Older data can be found in /​daten/​Raw/​Raw-YYYY-MM. ​ The raw data of the 100m Effelsberg telescope is stored in MBFITS-Format. In Effelsberg the files are located in the directory /daten/Raw which should be available on every **Observer-PC**. Older data can be found in /​daten/​Raw/​Raw-YYYY-MM. ​
  
-Every 30 minutes the raw data is synced to Bonn. It is accessible in /effbg/effdata/. More details on the location of data can be found here under [[Data storage and archive]]+Every 30 minutes the raw data is synced to Bonn. It is accessible in /eff/data/. More details on the location of data can be found here under [[Data storage and archive]]
  
 ====Initial data reduction==== ====Initial data reduction====
  
-The subscans are combined to a MBFITS map with “toolbox” on the “observer3” PC in Effelsberg ​(login as “nod2”, ask the operator for the actual password), including baselevel subtraction and filtering of strong radio-frequency interference (RFI) signalsSome parameters ​can be modified by hand if neededTransformation into NOD2 format, restoration of multi-horn data, transformation into right ascension/declination coordinates ​and Gaussian fitting for calibrators ​is done by dedicated automatic pipelines developed ​for each receiver.+The subscans are combined to a MBFITS map that should be processed ​with the “toolbox”. This can be done on the “observer7” PC in Effelsberg. ​For MPIfR observers the login can be done with their own LDAP accountPlease add the directories ///opt/bin// and ///​soft/​astro/​nod/​Ubuntu14_32bit/​bin.gfortran//​ to your path. 
 +Note: If you want to use a different PC than observer7, which is running on Ubuntu Version 14, you have to adjust the nod2 path to use the appropriate version compiled ​for your operating system.
  
-The pipeline scripts can be found in ///home/nod2/aktuelle_scripts/// There are scripts for cal maps that are called //​ketXXcal.script//​ and perform an additional Gaussian fitting to check the (polarization) calibration. Scripts for target maps are called //​ketXXmap.script//​. The XX is some acronym for each receiver mostly the wavelength in cm or mm. For the 6cm receiver there are scripts with "​db"​ for double beam and "​sb"​ single beam reduction. Just copy the script in your directory and call it with the scan number to be reduced.+<​code>​ 
 +# For bash 
 +export PATH=$PATH:/​opt/​bin:/​soft/​astro/​nod/​Ubuntu14_32bit/​bin.gfortran 
 + 
 +# For csh 
 +set path = ($path /opt/bin) 
 +set path = ($path /​soft/​astro/​nod/​Ubuntu14_32bit/​bin.gfortran) 
 + 
 +</​code>​ 
 + 
 +For all other observers a common account called “obs2” can be used (ask the operator for the actual password). The toolbox performs some basic baselevel subtraction and filtering of strong radio-frequency interference (RFI) signals. Some parameters can be modified by hand if needed (see [[information_for_astronomers:​user_guide:​reduc_pointing|Reduction of pointing measurements]] for toolbox options). Transformation into NOD2 format, restoration of multi-horn data, transformation into right ascension/​declination coordinates and Gaussian fitting for calibrators is done by dedicated automatic pipelines developed for each receiver. 
 + 
 +The pipeline scripts can be found in ///opt/actual_scripts/// There are scripts for cal maps that are called //​ketXXcal.script//​ and perform an additional Gaussian fitting to check the (polarization) calibration. Scripts for target maps are called //​ketXXmap.script//​. The XX is some acronym for each receiver mostly the wavelength in cm or mm. For the 6cm receiver there are scripts with "​db"​ for double beam and "​sb"​ single beam reduction. Just copy the script in your directory and call it with the scan number to be reduced.
  
 e.g. for a 11cm calibration map with scan number 0340:\\ e.g. for a 11cm calibration map with scan number 0340:\\
information_for_astronomers/user_guide/reduc_maps.1336567539.txt.gz · Last modified: 2015/03/04 10:28 (external edit)