Astronomy Without a Telescope
- Star Tales - Cygnus (ianridpath.com)
A popular name for Cygnus is the Northern Cross, and indeed its shape is far larger and more distinctive than the famous Southern Cross. In its cruciform shape the Greeks visualized the long neck, outstretched wings, and stubby tail of a swan flying along the Milky Way, in which it is embedded. Aratus’s description of it as being hazy or misty in parts is no doubt a reference to the Milky Way running through it. The mythographers tell us that the swan is Zeus in disguise, on his way to one of his innumerable love affairs, but his exact quarry is a subject of some disagreement.
- CP/M-86 (Wikipedia)
CP/M-86 is a discontinued version of the CP/M operating system that Digital Research (DR) made for the Intel 8086 and Intel 8088. The system commands are the same as in CP/M-80. Executable files used the relocatable .CMD file format.[nb 1] Digital Research also produced a multi-user multitasking operating system compatible with CP/M-86, MP/M-86, which later evolved into Concurrent CP/M-86. When an emulator was added to provide PC DOS compatibility, the system was renamed Concurrent DOS, which later became Multiuser DOS, of which REAL/32 is the latest incarnation. The FlexOS, DOS Plus, and DR DOS families of operating systems started as derivations of Concurrent DOS as well.
- Cygnus (constellation) (Wikipedia)
Cygnus is a northern constellation on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. Cygnus is one of the most recognizable constellations of the northern summer and autumn, and it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.
