Use a tripod and use a remote or set a 2 second delay on your shutter press if you start using longer exposures at low iso (anything longer than 1/10 of a second IMO)

Settings really depend on the effect you are trying to capture: - if you want to try and capture it like your eye sees it: high iso (as high as you can stand) and aim for between 1/500 and 1/30. - if you want to capture a more painterly look with the whole sky colored in: low iso (I’d start at 200) and long exposure >3 seconds. Probably between 3 and 30 seconds depending on the available light.

Those should get you started to experiment and find what you like. Enjoy!

Oh yea. Turn off the focus light, turn off the screen, and turn off the red blinking indicators. Turn all the lights off so you can preserve your night vision.

Don't be afraid of Iso, you might want manual focus, mirrorless cameras even as good as the R5 have a hard time focusing on "nothing at infinity". Largest aperture your lens can do (biggest hole, smallest f number) and the recommended shutter speeds.

I had luck with iso 3200, f1.4 and 1/6s shutter handheld on a sony a7iv with a 35mm f1.4 GM.

Tripod. Long exposure and keep ISO lowish. You may need to manually focus as there won’t be a clear object to focus on.

Shoot RAW and you can tweak the image better to pull down the brightness of the sky to help the colours stand out.

Crank your ISO up and play with shutter speed. You need a tripod to capture anything satisfactory.