It would be great to view in the table and to filter selection with the apparent size of an object in the sky in the observation planner. It will help to choose the perfect target in relation with user equipment.
You mean how it looks with respect to your chip FOV?
Exactly. Like in dso-browser website. Actually in kstars, filter includes type of object, magnitude, height in the sky. Size in the sky is missing and would help to choose a target. To be perfect, it would be great to visualise the fov with an overlay square. It's a shame to use an external tool like dso-browser, then a python script to convert into ekos, while everything you need can be done with one software. Are you a user of dso-browser Jasem. If it is, you certainly know what I mean.
You can do this now. Create an FOV indicator for your camera, then in your observation list, center each desired target in the sky map. Enable HiPS with DSS Colored overlay, and you will get a pretty good idea on how the target will appear in your field of view.
Yes ok, this is already what I'm doing so forget the graphical part of my wish. But imagine you have dozen of object in your list, then you have to select one by one to compare object size with your sensor size. It would be great to add one more criteria to reduce the size of the list.