Dr John Butler making adjustments to the recently restored . Calver 18-inch telescope at the Armagh Observatory. The International Astronomical Union's Minor Planet Center recently named an asteroid after Armagh astronomer, Dr John Butler. ... Christopher John Butler (b. 1940) has worked on cool stars, the effects of solar variability on climate, and preserving Armagh Observatory's scientific heritage for future generations. ... John Butler was born in Cambridgeshire. ...

1993 and 1996, Bo Einarsson and Yurij Shokin . The tutorial has now been modified so that it either can be used directly via the network or downloaded for installation on a Unix computer, a PC running Windows 3.1 or Windows 95, or an Apple Macintosh. Main page, with links to all other pages is f77to90.html. ... Computer Exercises . ... The Russian version is available as a regular book. The textbook in Swedish on Fortranљ90 is available both interactively and as a printed book. ...