One of the most special functionalities of Nebulb is the automatic detection of flying objects, that is, the detection of everything that moves in the sky and are not stars (meteors, satellites and planes).
Thus, by simply selecting the following option Nebulb performs the automatic detection of flying objects during stacking. And, thanks to this, after stacking it is possible to merge as many flying objects as desired on the final image (aligned according to the position of the sky in which they appeared, as well as according to the position of the image).
The only thing you have to take into account is that this functionality is linked to the stacking of aligned stars, i.e., in order to activate the "Detect flying objects" option, the "Aligned stars" option must also be selected. That said, after stacking it is also possible to merge the flying objects on the star trails image (if the "Star trails" option is also selected).
In the documentation there is a specific section on the management of "Flying Objects", but here are a few example images of what you can achieve with Nebulb using this functionality:
Image of aligned stars without any flying object
Image of aligned stars on which the meteors of the Lyrids meteor shower have merged (aligned according to the radiant)
Image of aligned stars on which all detected flying objects (except Lyrid meteors), i.e. planes, satellites and meteors from other secondary meteor showers, have been merged
Image of star trails on which the meteors of the Lyrids meteor shower have merged (aligned according to the radiant)
IMPORTANT 1: The detection of flying objects is the most time and resource consuming of all Nebulb's processes, since it involves an exhaustive processing of all imported images in order to accurately locate as many flying objects as possible (even if they are really very faint).
IMPORTANT 2: For the detection of flying objects to be executed, it is necessary that multiple images (at least two) are imported and that the stars in the images are as punctual as possible.
IMPORTANT 3: Flying object detection cannot be applied to individual images, nor can it be applied to images that have already been composed (such as those obtained using the Live Composite mode of Olympus cameras).