What's New in Peranso 2.0 ? 

Peranso 2.0 is a major new release boosting many new product features, and greatly enhancing existing functions :

- We added Dr. Alan Harris' Fourier Analysis method FALC, which is a de facto standard for asteroid light curve period analysis. The method is fully integrated in Peranso through the Period Determination dialog box, and through the FALC Workbench (shown below). The latter presents Dr. Harris' method in a convenient user interface, and offers sophisticated outputs, showing f.i. the uncertainty of the fitted curve. In addition, it features an harmonic order scan, an automatic period scan, etc.


- Textual View forms are new forms associated with each Peranso window. They present a tabular (instead of graphical) representation of the window contents, and have buttons to export the Textual View contents to a file or to the clipboard.


- The default base time in Peranso is days, which is more typical for variable star work. A user can now switch the base time to hours, e.g. when making asteroid period calculations. 

- We added the concept "Magnitude Error" (MagError) to represent error values on magnitude estimates. A MagError is visually represented as a 'vertical bar' centered around the corresponding magnitude dot in the light curve (see example below). Magnitude error values are taken into account when performing a FALC period analysis.


- The display of mouse coordinates in the Observations Window has been greatly enhanced. When the mouse cursor is over an observation, the exact time and magnitude of that observation are shown in the color of the corresponding Observation Set. If the observation has a MagError value, then this one is shown as well in the mouse coordinates. If the mouse cursor is not over an observation, then the time and magnitude of the cursor position are shown as before.

- Complete rework of the Add Observation Set dialog box, which is used to read in a series of observations. It now exists in a simple and advanced form, featuring a new Modify Column Format dialog box (shown below). It allows to define the amount of columns in your data source (file or Microsoft Windows Clipboard) and the attribute type of each column. 

Supported column attributes are Time, Mag, MagError, Use status and Ignore. MagError denotes a column containing magnitude error values (see above). 

- The proper alignment of Observation Sets is critical to finding the right period. You have to align observation sets so that they mesh well together, before starting the period analysis. By adjusting an observation set, you move it up or down in relation to the other observation sets. The Peranso Time/Mag Offset command now allows to do the alignment in a graphical way, by indicating the start and end positions of the desired offset, directly in the Observations Window.

- We reworked the Period Determination dialog box to better group Peranso's set of period analysis 

- The Peranso online help has been completely rewritten and extended. It features new tutorials, an introduction chapter about time-series analysis, a glossary explaining such concepts as aliasing, harmonics, period error, period significance, etc. The help file is also available as a User Manual in PDF format, with nearly 200 pages and more than 100 illustrations.


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