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

Each guider output frame correspond to a row in the file


The file name i.e. GuiderHistory_v3_3_7067_38828.csv also contain the full version number to make a different file per version. This allow to change the structure of the file in a new version without damaging the files already captured with an older version.



This file is very useful to analyze what happened during the full capture session in term of frame SNR, pixel saturation, offset, gradient, signal rms level, ...


Column name

Meanning

Time

Local timestamp.

TimeUTC

UTC timestamp.

Frame

Corresponding guider frame number.

SNR

Signal-to-Noise ratio in dB. The signal RMS value against the noise RMS floor.

DSL

Dynamic range ratio in dB. The signal RMS value against the useful minimum statistical signal level for a given probability level.

StDev

Standard deviation in ADU is calculated on the processed guider frame. 

Median

Median in ADU is calculated on the processed guider frame. 

RMS

Root mean square in ADU is calculated on the processed guider frame.

GradientAngleX

Angle in degrees of the gradient in the X axis detected in the guider frame.

GradientAngleY

Angle in degrees of the gradient in the Y axis detected in the guider frame.

GradientOffset

Offset in ADU of the gradient detected in the guider frame.

GuiderCamSaturatedPixels

Number of saturated pixels (pixel that reach the maximum ADU of the guider camera).

GuiderCamMaxADU

Maximum ADU of the guider camera.

GuiderCamPixelMaxADU

Value of the highest pixel in the guider frame in ADU.

FileName

The file name of the guider frame when "Store guider frame to working folder" is enabled.