ESO Exposure Time Calculators     
Documentation and Tools News and Notes
  • Frequently Asked Questions
  • Formula Book
  • Database of efficiency profiles
  • Historic ETC versions:
  • SkyCalc Sky Model Calculator
    - with advanced Almanac
    - command-line interface skycalc_cli
  January 14th, 2019: Version P103.5 released

CALVIN: Support for MATISSE calibrators.
ESO Exposure Time Calculators
Imaging Spectroscopy
La Silla EFOSC2  SUSI  WFI  SOFI  EFOSC2  HARPS  FEROS  SOFI 
Paranal UT1 NACO  FORS2  FORS2  KMOS 
Paranal UT2   UVES  UVES-FLAMES  GIRAFFE  X-SHOOTER 
Paranal UT3 VISIR   SPHERE-IRDIS  SPHERE-ZIMPOL  VISIR  SPHERE-IFS
Paranal UT4 HAWK-I  SINFONI  MUSE 
Paranal ICCF   ESPRESSO
Paranal VISTA VIRCAM   
Paranal VST OmegaCAM   
E-ELT E-ELT  E-ELT 
VLTI GRAVITY  MATISSE  VisCalc  CalVin 

Send comments and questions to usd-help@eso.org