====== LOFAR Long-Baseline Group ======

Information in this area is contributed by individuals. It does not necessarily reflect official views of LOFAR, the ILT or any other body, not even of the full LBG as such.

===== This wiki =====

This wiki will be used for discussions and results of the working group concentrating on long baselines for LOFAR. Most parts are public and can be read (but not modified) by everybody. In order to see the [[lbg:priv:start|private section]] you have to be a member of the group and log in.

You cannot register yourself but have to ask [[wucknitz@astro.uni-bonn.de|Olaf Wucknitz]] for an account.

After logging in, you can set up email notification by clicking on the ''Manage Subscription'' button below. Updates on individual pages or whole namespaces (e.g. ''lbg'' for the entire LBG wiki) are possible.

Help on the wiki usage is available via the ''DOKUWIKI'' button on the lower right.

In case of problems, please contact [[wucknitz@astro.uni-bonn.de|me]].

We want to have most of our discussions on the [[http://usg.lofar.org/forum/index.php?board=27.0|USG forum]]. Please do not emails (if possible) but post your contributions there. This wiki is meant for more detailed presentations of results etc. If you add anything of importance here, please also post a link to the forum so that everybody has a chance to find the new results.
You can also include images that reside on the wiki into forum posts. Documents that do not fit in the hierarchy here can be dumped [[lbg:docdump:start|here]].

When you add new sections to the hierarchy, please also update the sidebar (click on [[lbg:sidebar|This sidebar]]).

===== Getting started =====

Some hints about accounts you need etc. can be found [[gettingstarted|here]].

===== List of members =====

The list of members is [[members|here]]. The [[lbg:priv:emails|email addresses]] can only be seen be members of the group (please login).


===== Management Team =====

This [[.:mt:start|small sub-group]] shares the responsibility to organise our work and define strategies. 

===== Agenda =====

[[agenda|General agenda of the LBG]]

===== Announcement =====

A [[announce|general announcement of LBG activities]] was send to possible members and posted to the [[http://usg.lofar.org/forum/index.php?board=27.0|USG forum]] on 05 April 2011.

===== TAG and progress reports =====

The LBG reports to the technical advisory group (TAG). Details about the TAG, progress reports etc. can be found [[.:tag:|here]].

===== Jobs =====

There are [[.:jobs:|job opportunities]] in LOFAR.


===== Particular projects / objects =====

  * [[.:tau_a:|Taurus A / crab / 3C144]]
  * [[.:circular:|Conversion to circular polarisation]]
  * [[.:pipelinetests:|Tests of the pipeline (BBS+NDPPP+...) with long-baseline data]]
  * [[http://ned.ipac.caltech.edu/cgi-bin/gmd?uplist=M1%0D%0A3C196%0D%0A3C123%0D%0ACyg+A%0D%0A3C461%0D%0A3C380%0D%0AVir+A%0D%0A3C273%0D%0AB0218%2B357%0D%0AMG+J0414%2B0534%0D%0A3C147%0D%0A3C48%0D%0A3C295%0D%0A3C286%0D%0A0957%2B561%0D%0A&delimiter=bar&nondb=row_count&nondb=user_name_msg&nondb=user_objname&crosid=objname&position=ra%2Cdec&enotes=objnote&position=pretype&position=z&gadata=magnit&tab_cnts=n_gphot&nondb=link_image&attdat=attned&gphotoms=q_value&gphotoms=q_unc&gphotoms=ned_value&gphotoms=ned_unc&diamdat=ned_maj_dia|Selected targets in NED]]

===== MSSS =====

  * [[.:msss:|Long-baseline plans for MSSS]]
  * [[.:mssspipeline:|Tests of combined calibration/fringe detection pipeline on MSSS data]]
===== Long-baseline fringe fitting (IMS) =====

A discussion of some of the general issues can be found at

  * [[http://www.astro.uni-bonn.de/~ims/aufgaben/ff/ff_algorithms.pdf|ff_algorithms.pdf]]

I've written a lot of fringe-fitting code, which may be of interest to developers, although there is no tidy interface as yet for potential users:

  * [[http://www.astro.uni-bonn.de/~ims/aufgaben/ff/code/all_ff_code.tar|all_ff_code.tar]]

===== Data handling tools =====

  * [[.:data_handling:tutorial|casacore etc tutorial]]
  * [[.:data_handling:circularconversion|Converting to circular polarisation using pyrap/TAQL]]


===== Long Baseline Week 1 =====

More information about the first long-baseline busy week (21-25 May 2012 in Bonn) here:

[[lbg:lbw1:start|Long Baseline Week 1]]
===== Technical issues/problems/details =====

  * [[.:rawvoltages:|Corrupted beamformed raw-voltage data]]
  * [[.:rfi:|RFI]]
  * [[.:diag:|diagnostic plots of various data sets]]
  * [[.:weights:|Scaling of weights derived from autocorrelations (NDPPP autoweight)]]


===== Offline correlation experiments =====

  * [[.:offlinecorr:lwa_2013_mar:start|LOFAR+LBA experiment 26th March 2013]] This 1h observation used Onsala, Effelsberg, KAIRA in LBA and will correlate with the LWA. Target is B0809+74.

===== Tasks =====

[[.:tasks:|Here]] is a list of current tasks for our group. You are welcome to select one and start working!


===== Observations and data sets =====

[[.:data:|Incomplete list of long-baseline datasets and observations]]


===== Long Term Archive (LTA) =====

[[.:lta:|LTA]]

===== Cycle 0 projects =====

[[.:cycle0:|Information about long-baseline aspects of Cycle 0 observations]]

===== Status information =====

[[.:status:|Local information on station status etc]]

Also check external information in the [[lbg:links|links section]].

===== Document dump =====

[[.:docdump:start|Here]] we can put documents and images that do not fit anywhere else.


===== Personal pages =====

[[.:personal:|Here]] you can add personal pages.


===== Useful links =====

[[links|Useful links]]


===== Private section =====

[[.:priv:start|This section]] can only be seen by members of the group after log in.