DOT data:  database,  search engine,  chronological index,  description,  software

Explanation of DOT data formats:  see Database description.

DOT software: see Software.

DOT data are public.   You are welcome to use DOT data for detailed analysis without restriction.  We appreciate acknowledgement to "Dutch Open Telescope" (short), "Dutch Open Telescope of Utrecht University" (medium), or "Dutch Open Telescope, operated by Utrecht University at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias" (long).  We also welcome research collaborations using DOT data, in particular contributions to the "DOT tomography of the solar atmosphere" article series.  P. Sütterlin is the principal candidate for DOT co-authorship for all data taken before 2008.  During the autumn of 2008 Santiago Vargas Dominguez was the DOT observer, during the summer and autumn of 2009 Vyacheslav Olshevsky.

DOT database search engine:  a user interface to select specific DOT data, setting the time(s) of observation, type of object, wavelength(s), viewing angle(s), Fried parameter (seeing quality), etc.  It returns lists of data sets that fit the criteria, with data sequence information including small thumbnail images and a link to the pertinent data, similarly to the chronological index which it replaces.

Chronological DOT database index:  an older overview using sample images from each observing session.  Move your mouse over the clickable dates for a quick indication of the target (blue continuum image).  Clicking on a selected date then opens quick-look information.  For each observing session, the panel below the sample images specifies the target, observing mode, time of observation, cadence, solar disk location, average seeing quality (Fried parameter r_0), a link to the pertinent Mees active region map, a burst-by-burst plot of the Fried parameter, and a "Get data" link to the corresponding directory in the DOT database. The same information is also returned by the database search engine.

DOT database:  ftp server containing all DOT data available for downloading. 

How to get DOT data:  Select the data sequence you like with the search engine to the DOT database or the chronological database index, and then get the data through the "get data" clickers provided there.

Under Linux/Unix downloading many files at once may also be done through e.g.:
      lftp    connect to desired database directory (date) through anonymous ftp
  ls show directory contents
  du -hs show total directory size
  mirror -n . get all (new) files, also in subdirectories
  mget -d FITS/* get all dirs with files below FITS
  mget Cubes/*-ha* get only the Halpha cubes,   or use:  cd Cubes, mget *-ha
  exit when done

Rob Rutten 2017-03-27