CTIO Optical Imagers

Mosaic Imagers

4m MOSAIC II Prime Focus 8K Mosaic CCD Imager
Optical Imager at the SOAR 4.1m Telescope

Single-CCD Imagers

0.9m CFCCD Cassegrain Focus CCD Imager
YALE 1.0m CCD Imager

Exposure Times

Exposure Time Calculator

Photometric Standard References

• UBVRI standards
• The The CADC Astronomical Standards Page is home to the list of Stetson Photometric Standard Fields
• Sloan/SDSS filter standards
• Links to ugriz magnitudes, astrometric, and spectral properties

Filters

Filter Overview
Filters - 2004 measurements for 5.75 inch set (for 4-m prime focus BTC and Mosaic Imagers)
Filter list (all filters up to and including 4x4-inch, sorted by wavelength)
Filters - 3 & 4 inch (for SOAR, Schmidt, 0.9-m imaging)
Measurements in 2001
Transmission measurement setup, ver. 2001

CCDs and Controllers

CCDs
ARCON ARray CONtroller for CCDs.
Smart Motor Controllers

Historical Information on Sky Conditions

Record of Sky Conditions at Tololo

Retired Instruments

4m BTC Prime Focus 4K Mosaic CCD Imager (retired July 1999)
4m PFCCD Prime Focus CCD Imager (retired July 1999)
1.5m ASCAP Automated Single Channel Photometer

csmith@noao.edu
awalker@noao.edu

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