These are notes that I write to myself when I reduce data. They may be of use when you are reducing data taken with CTIO telescopes.

• YALO IR channel notes (June 2000)
• YALO IR  channel notes (March 2001)
• YALO IR channel notes for SN2000cx data (7-9/2000), written 4/2001
• YALO IR channel notes for SN2002bo data written April 2003
• YALO IR color terms (Feb 2001)

• LCO Classical Cam reduction notes April 2002

• 2MASS numbers

• CTIO 1.5m optical data (October 2001)
•  CTIO 1.5m optical data (November 2001)
• New Steston format for photometric reductions (0.9m data June 2002)
• Magellan MAGIC optical data

• YALO optical channel notes
• YALO optical color terms

 
•  REU YALO instructions for optical data I.
•  REU YALO instructions for optical data II.

 
• How to make a color image

 
• Really bad YALO IR Channel images
• Good YALO reduced images from March 2001

 
•  How to measure the sky brightness

•  How to make a shutter image
•  Typical shutter image from CTIO 0.9m telescope
•  Cut through center of shutter image