Constellation (Gladstone Electronics) Available for Sinclair ZX81
Constellation (Superior) Available for Acorn Electron A well-researched utility allowing an astronomer to view the stars from any point on the Earth's surface on any date and at any time.
Constellation (Bug Byte) Available for Sinclair ZX81 A well-researched utility allowing an astronomer to view the stars from any point on the Earth's surface on any date and at any time.
Constellation (J. Rogers/J. Hodgson) Available for Spectrum 48K A well-researched utility allowing an astronomer to view the stars from any point on the Earth's surface on any date and at any time.
Constellation (Your Sinclair) Available for Spectrum 48K A well-researched utility allowing an astronomer to view the stars from any point on the Earth's surface on any date and at any time.