Here are some example screenshots of the Nightshade astronomy simulator.
Click on images for full size image.
Atmosphere with some references lines shown.
Western color constellation art (courtesy Johan Meuris and Erasmo Sesena).
Western constellation line drawings and labels.
Zoomed in on a conjunction of Jupiter and Neptune showing larger moon orbits.
Viewing Neptune from one of its outer moons.
Hindu sky culture (courtesy Vikas Nautiyal).
Ancient Egyptian sky culture (research courtesy Juan Antonio Belmonte,
Instituto de Astrofisica de Canarias).