If you have a digital camera with a macro lens you could rig up something like this.
https://www.scantips.com/g4/p1230510.jpg
from this page
https://www.scantips.com/es-1.html
I have used this sort of setup in the past using the sky as a light source and a cardboard tube to keep the light out but the results depend on the quality of the lens (Star fields tend to show up any deficiencies, like pincushion etc)
Cheers
Robin