Las Campanas Observatory
Direct CCD Exposure Time Calculator 1.0

Calculates the observation time needed for a given telescope, instrument, detector and filter.

Algorithm based on the IRAF task ccdtime

Last Update: Feb 03 2004

Telescope:
Instrument:
Filter:
Magnitude: (must be between -5 and 35)
Signal/noise: (must be between 0 and 100,000)
CCD Binning:

Seeing (arcsecs): (must be between 0 and 5)
Airmass: (must be between 1 and 3)
Lunar Phase:

Your observation will require approximately seconds to complete.


Star counts:       Sky counts/pixel:

Noise Contributions: Star    Sky    CCD


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