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CHANGELOG.md

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#0.14.0 (in development)

  • Massive changes to internals of simulation
  • Many slow algorithms and classes rewritten using "numba" library - much faster, ELT scale problems now reasonable.
  • Rewritten parts are the lineofsight moduel and the ShackHartmann WFS
  • Added infinite phase screens
  • Interaction matrices now measured in the "reconstructor" modules rather than by the DMs themselves
  • Added reconstructor section in config file to allow for more complex reconstructor specifications
  • Improved GUI with some extra buttons!
  • Now depends on external aotools package (available on pip and here), internal aotools will be removed

#0.13.1 (18th April 2017)

  • Fix issue where all required packages not installed by moving to setuptools for installation
  • added options to Gaussian DM

#0.13.0 (10th January 2017)

  • Use "aotools" packages instead of "AOSimLib" (aotools packaged with Soapy)
  • Move pupil mask loading and formatting to seperate function in Simulation
  • Update GUI to use PyQt5 if available (still bugs need ironed out of this implementation)
  • Can set a SH WFS pxlScale, which overrides the FOV parameter
  • Improve extended SH WFS implementation
  • fix bug in infinite phase screen covariance calculation
  • Bug fixes
  • Docs updates

#0.12.0 (18th May 2016)

  • Shift lots of light propagation code to a separate LineOfSight object, which is shared by WFSs, LGSs and Science targets
  • Add optional YAML configuration style. This will now be the main supported configuration method
  • Added ability to conjugate DMs at a finite altitude
  • Re-worked API to objects so they only need the simulation config file
  • Fix "Gradient" WFS so slopes outputted in arcseconds
  • Other fixes and small features

#0.11.0 (3rd March 2016)

  • Begun restructuring of components as files were getting very large. Now components will be kept in sub-modules. Done WFS module.
  • Re-worked correlation WFSing - now there is an "ExtendedSH" WFS, which can take an extended object, that is convolved with the sub-aperture PSF to form a wide-field WFSer. A correlation centroiding technique is used to get centroids (thanks to @matthewtownson!)
  • Added options of integer frame loop delay (thanks to @jwoillez!)
  • Can set tau_0 parameters in atmosphere. Atmosphere also prints out atmosphere summary on init. (thanks to @jwoillez)

#0.10.1 (9th February 2016)

  • Config objects can be converted to dictionaries

#0.10.0 (7th December 2015)

  • Phase is now internally passed around in nano-metres
  • Added both WFS photon and read noise. Still needs comparisons to verify though
  • Added a DM which is interpolated on each frame - better for larger systems
  • Can now access and save the corrected EField (thanks @Robjharris37!)
  • Added testing infrastructure and code coverage checking - also added more tests
  • Data now saved with common FITS header

#0.9.1 (23rd June 2015)

  • Tutorial added to docs
  • Fix bug in off-axis science cameras, where Interp2d wasnt imported
  • Can use a random phase screen for each loop iteration

#0.9 (12th May 2015)

  • Name change to Soapy!

  • Some parameters changed name

    sim
    filePrefix  -->  simName

tel
    obs      -->  obsDiam

wfs
    subaps  --> nxSubaps
    subapOversamp -->  fftOversamp

lgs
    lgsUplink -->  uplink
    lgsPupilDiam -->  pupilDiam

dm
    dmType   -->  type
    dmActs    -->  nxActuators (Now only specify the 1-d size)
    dmCond  -->  svdConditioning

sci
    oversamp   -->   fftOversamp

  • Configuration parameters in lists are now accessed as plurals, e.g. sim.config.wfs[0].nxSubaps --> sim.config.wfss[0].nxSubaps.

#0.8.1 (22nd April 2015)

  • Some bugs fixed with WFSs

  • Made it easier to change shack-hartmann WFS centroider. Add new centroider to pyaos/tool/centroiders.py, then use the function name in the config file -- the simulation will now use the new centroider

  • continued adding to docs and tests

#0.8.0 (15th April 2015)

  • simSize is now defined, which is the size of phase arrays to be passed around. This is currently sized at 1.2 x pupilSize, though this can be altered, and eliminates any edge effects which used to appear when interpolating near edges. This broke lots of things, which I think have all been fixed. If any exceptions which feature simSize or pupilSize occur, they could be caused by his change and if reported should be quickly fixed. Now, phase from DMs and the expected correction given to WFSs should be of shape config.sim.simSize, rather than config.sim.pupilSize as previously.

  • A major bug in scaling phase for r0 has been fixed, which caused a big degradation in AO performance. AO Performance now matched YAO well for single NGS cases.

  • A correlation centroiding method has been added by new contributor @mathewtownson

  • Unit testing has begun to be integrated into the simulation, with the eventual aim of test driven development. Currently, the tests are system tests which run the entire simulation in a variety of configurations. More atomic testing will continue to be added.

  • Documentation has been updated and is getting to the point where all existing code structures are explained. The target of the Docs will now turn to more explanatory stuff, such as a tutorial, and how to extract Data from a simulation run.

  • Various arrays in the WFS module now use circular NumPy buffers to avoid excessive data array creation.

###Numba Branch

  • Due to all the code using either pure python or NumPy or SciPy routines, the code is currently not competitive performance wise with other AO codes. To address this shortcoming, we've begun to develop a version of the code with performance critical sections accelerated using Numba, a free library which uses LLVM to compile pure python to machine code. This branch can be accessed through git and is kept up to date with the master branch, Numba is included with the Anaconda python distribution, or can be installed seperately, though it requires LLVM 3.5 to also be installed. Early results are very promising, showing over twice speed-ups for lots of applications.