New in Peranso 2.0 ?
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
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
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
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