ESO Exposure Time Calculators

Exposure Time Calculators (ETCs) give astronomers the ability to predict the signal to noise ratio - or conversely, the exposure time to achieve it - under a set of assumptions about the performance of an instrument and the observing conditions.

Documentation and Tools

Frequently Asked Questions
Formula Book for signal and noise estimates
Characteristic curves for the various optical components
Retired Exposure Time Calculators
SkyCalc Sky Model Calculator web application

ESO Exposure Time Calculators

	Observation Domain
Facility	Imaging	Spectroscopy
La Silla	EMMI EFOSC2 SUSI 2p2 WFI SOFI	EMMI EFOSC2 HARPS FEROS SOFI
Paranal UT1	FORS2	FORS2 KMOS CRIRES
Paranal UT2		UVES FLAMES GIRAFFE X-SHOOTER
Paranal UT3	VIMOS	VIMOS-MOS VIMOS-IFU
Paranal UT4	NACO HAWK-I	NACO SINFONI MUSE
Paranal VISTA	VIRCAM
Paranal VST	OmegaCAM
E-ELT Calculators	E-ELT	E-ELT
VLTI Calculators	VisCalc CalVin

ESO Exposure Time Calculators

Documentation and Tools

Notes

February 25, 2014

The ETC system has been updated for Call for Proposals - P94 phase 1.

The first public release of the MUSE ETC is now available.