If this image is part of a "set" for stacking (common in communities like Cloudy Nights ), it is likely a sub-exposure or a calibration frame.
: Reference the "set-1x" image to see the correct overlap of the end caps. 2392-set-1x.jpg
: JPG is a lossy format ; avoid re-saving this file multiple times, as it will introduce "ringing" artifacts. If this image is part of a "set"