Stream analysis parameter reference

Show isoline image switch the image format to isoline display. In color mode, this can be used for ADC tuning.
Autodetect planet if active, plugin tries to detect the planet in the ROI. Evidently, this option must be active for live stacking and stream analysis.
In theory, stacking and other features work also if no planet image can be detected in the ROI, but in the current state, the module is not yet prepared for these cases.
Show stream preview activates the display of the stream image (with minimal pre-stacking). To save space on the screen, the stream image can be hidden, then only the cross section intensity graph and the evaluation data are shown in the plugins main window. Note that the calculations always proceed, as they are the basis for the plugins operation.
Autoscale image if active, the planet image will be scaled automatically so that it fits into the current PEAAnuts stream view/live stack frame with some comfortable margin. So autoscaling depends on the detected planet size, which varies a bit continously due to the seeing. Small fluctuations will be ignored, but significantly changing conditions (e.g. brightness changes due to passing clouds) can influence the scaling. Scaling generally reduces data quality, so it should be used with caution.
Note that autoscaling and manual scaling (see below) are mutually exclusive. If autoscaling is active, it overrides a manually set scaling factor.
Low det. threshhold specifies the brightness (relative to the actual maximum, in percent) which should trigger planet detection. Might be in need of adjustment to special circumstances, e.g. for daylight observation, or other low contrast situations. The low threshhold is printed in the graph image with a green line. So one has a visual feedback for judging if the current setting is appropriate. The value strongly influences the diameter of the detected shape. So it should remain constant during focus finding based on the printed analysis data and of course also during stacking.
High det. threshold This value is used to calculate the mentioned 'step-sharpness' of the intensity curve.
Vertical cross section position gives the relative position for which the horizontal cross section plot is produced. The value is interpreted relative to the lower rim of the autodetected planet shape, so the the default setting of 50% means a cross section through the (vertical) center.
Scaling Instead of autoscaling the planet into the plugins image window, a specific scaling factor (in %) can be set here. Keep in mind that image postprocessing only works fully in the center region, frame-like artifacts may appear at the image edges. So it is recommended to use scaling factors which fit the planet into the current image size with some margin.
Note that autoscaling and manual scaling (see below) are mutually exclusive. If autoscaling is active, it overrides a manually set scaling factor.