Astronomy Code

So one day I decided that I wanted to write my own astronomy program to make sky charts and to plot deep sky objects. The process seemed simple enough: take the celestial coordinates of whatever object interests you (say, the star Deneb in the constellation Cygnus), convert it to x/y pixels for your screen and then plot it! And, actually, it pretty much is that straight forward. [More]

XEphem and SOHO Images

The NASA web server that dishes out SOHO images has recently been updated to use SSL (HTTPS) connections only, and this causes XEphem to be unable to retrieve the latest images. Contributor Lutz Mändle created a patch to allow this connection to be reestablished. [More]

VIC-20 Real Time Clock in VICE

The beauty of this is that you could program a BBS to use this. The internal RTC gets messed up when either the tape or disk storage units are accessed - so using the D12C887 provides a separate, accurate clock with which to tag things like messages and files. Obviously, it does not worry about dates - but that could easily be accommodated by a subsystem. [More]