Using Run Cam Eagle Camera

Which version of Runcam eagle are you using?

Night Eagle 2

For astronomy

What do you mean 'fainter" objects....further away? ...or low light?

..."If the video camera has an f-stop or iris setting, change this setting to the lowest number possible. An f-stop of 1.4 is amazing. By lowering the f-stop number on the camera, you are allowing a bigger aperture. By creating a bigger aperture, more light is let into the camera creating a brighter image."... Jun 12, 2019

..." Usually all cameras are set to 30 frames per second, although 24 frames per second will capture a crisper video when shooting in low light. The slower frame rate speed brings more light into the camera, therefore brightening the video footage.

By turning the shutter off, you can change your frame rate to 1/24 of a second instead of 1/30 of a second. It may look like a slight decrease, but it will increase the light in your video footage hugely."...

The faster the action, the higher the shutter speed you need or the picture will blur....

https://clipchamp.com/en/blog/film-low-light/#:~:text=If%20the%20video%20camera%20has,camera%20creating%20a%20brighter%20image.

I have almost no knowledge of experience with this sort of thing, but:-

It looks as though you don't have much control:-

https://www.manualslib.com/manual/1324465/Runcam-Night-Eagle-2.html#manual

The shutter speed is selected automatically. I'm guessing that if you point at part of the sky with very few bright objects you will get better pictures of the dimmer ones.