Chapter 2
The Theory of Automated Data Reduction

Abstract
“Accurate photometry with a robotic telescope would greatly aid in the discovery and subsequent detailed investigation of astrophysical phenomena from white dwarfs and cataclysmic variables to bright quasars” (Bode, 1995). The advantages offered by automation for stellar photometry are especially applicable to the study of variable stars (Schmidt, 1992). This Chapter aims to show (i) why automated data reduction is becoming not only desirable, but also a necessity of modern telescopes. In a typical night a robotic telescope may take several hundred frames, and it is “beneficial to process some of them on-line” (Treffers et al., 1992). However the effort put into creating better and more efficient data collection instruments far outweighs research in the area of automated reduction. And (ii) what standard steps are necessary in the process of data reduction.
And Caesar’s spirit, ranging for revenge,
With Ate by his side come hot from hell,
Shall in these confines with a monarch’s voice
Cry ’Havoc,’ and let slip the dogs of war;
That this foul deed shall smell above the earth
With carrion men, groaning for burial.
William Shakespeare-Julius Caesar Act III, Scene I