Output history to CSV

Not available nor applicable with SkyGuide

When output history to CSV is enabled a file called FocusingHistory.csv is created in the working folder.

Each iteration of the guiding loop correspond to a row in the file

The file name i.e. FocusingHistory_v3_3_7067_38828.csv also contain the full version number to make a different file per version. This allows changing the structure of the file in a new version without any format conflict with the files already captured from older versions.

This file is very useful to analyze what happened during the full capture session, helping for support or to review your auto-focusing performances.

Using Excel is it easy from the data any relevant plots.

Column name	Meaning
Time	Local timestamp.
TimeUTC	UTC timestamp.
Iteration	Corresponding focusing loop iteration number.
FrameRate	Time in milliseconds of one focusing loop iteration.
AverageFrameRate	Average time in milliseconds of all focusing loop iterations.
CorrelationFactor	Percentage of correlation (0% to 100%) between the current guider camera output frame and the guider reference frame.
CorrelationThreshold	Defines the minimum value before suspending focusing.
PoorCorrelation	True if the correlation factor is below the correlation threshold. Otherwise False.
SNR	Signal-to-Noise ratio of the stacked frame in dB.
DSL	Dynamic range ratio of the stacked frame in dB.
ScopeAltitude	The altitude of the field pointed by the telescope above the horizon in degrees.
FocuserPosition	The absolute focuser position in steps.
FocuserCFZPredicateUpperBound	The CFZ upper bound predicate in steps.
FocuserCFZPredicateBestFocus	The CFZ best focus predicate in steps.
FocuserCFZPredicateLowerBound	The CFZ lower bound predicate in steps.
FocuserCFZMin	The CFZ minimum value in steps
FocuserCFZMax	The CFZ maximum value in steps
FocuserTemperature	The temperature of the focuser in celsius
Filter	The name of the filter currently selected in the filter wheel. Empty if there is no filter wheel.
Reference	The reference relative roundness registered to the current filter. Allows to compensate filters that are not parfocal.
Correction	The correction is steps.
Kc	The system gain in micron per %
Ks	The system gain in % per micron
PoleValue	The regulator pole
MeanX	The correlation centroid peak coordinate on X axis in pixels.
MeanY	The correlation centroid peak coordinate on Y axis in pixels.
StdevX	The standard deviation along the X axis of the focusing correlation peak in pixels.
StdevY	The standard deviation along the Y axis of the focusing correlation peak in pixels.
MajorStdev	The standard deviation along the major axis of the focusing correlation peak in pixels.
MinorStdev	The standard deviation along the minor axis of the focusing correlation peak in pixels.
NoCorrection	True if no correction has been sent to the focuser relay. Otherwise False. "No correction" can happen for multiple reason such as error protection, minimum move thresholds, ...
Absolute	The absolute roundness (ARDN) in percent.
AbsoluteAverage	The average absolute roundness (AARDN) in percent.
AbsoluteAngle	The absolute roundness angle in degrees.
RelativeMin	The relative roundness minimum value in percent.
RelativeMax	The relative roundness maximum value in percent.
Relative	The relative roundness (RRDN) in percent.
RelativeAverage	The average relative roundness (ARRDN) in percent.