Images list [Siril 1.0]

Images list

List images of the sequence, with their status and quality information.

Sort images by clicking on the title of their column, for example by names, by the FWHM or quality.

Quality is FWHM^[1] when PSF registration is used, so lower is better

And gradient estimator for DFT registration, higher is better.

Columns X and Y are the translation in pixels relative to the reference image

FWHM
Full-Width Half-Maximum
The technical term Full-Width Half-Maximum FWHM , is used to describe a measurement of the width of a star
It is a well-defined number which can be used to compare the quality of images obtained under different observing conditions. In an astronomical image, the FWHM is measured for a selection of stars in the frame and the "seeing" or image quality is reported as the mean value. Solower value for FWHM is better.
With Siril it's possible to obtain the FWHM parameters in arcseconds units. This requires you fill all fields corresponding to your camera and lens/telescope focal in the setting parameter window. If standard FITS keywords FOCALLEN, XPIXSZ, YPIXSZ, XBINNING and YBINNING are read in the FITS HDU, the PSF will also compute the image scale in arcseconds per pixel.