Updates 2000 May 20
Coma etc. 2001 Feb 16
Undersampling. 2000 May 20
Least squares, "STAR" aperture methods etc.
2000 Apr 28
Dark images, Hot pixels and cosmic rays. 2000 Jan 4
Saturated Sources. 1999 Dec 30
Edge Pixels. 1999 Dec 23
CD5 vs CD3 magnitudes. 1999 Nov 19
Format, orientation. 1999 Feb 3
Noise: 2_D Spectra. 1999 Mar 16