If I was going to scratch-build those domes, I would make the curved section from thin flexible acryllic sheet, and form it over two semi-circular end cut from thicker rigid acryllic sheet. The glazing lines would be added using charting / graphic art tape (I have 1/64" width in a variety of colours, made by Formaline). I think this would be a relatively simple project.
another source of narrow tape, for example: https://www.amazon.com/64-Whiteboard-Gri...B000CCJPCA
another source of narrow tape, for example: https://www.amazon.com/64-Whiteboard-Gri...B000CCJPCA