ESO Exposure Time Calculators     

Documentation and Tools News and Notes
  • Frequently Asked Questions
  • Formula Book
  • Database of efficiency profiles
  • Retired ETCs
  • Historic ETC versions:
  • SkyCalc Sky Model Calculator
 
IMPORTANT NOTE! Jan.17,2017: Bug fix!
A bug in a core ETC library has been identified and corrected.
Several ETCs (including SOFI and the GIRAFFE LR08 mode)
have been affected between Dec.20,2016 and Jan.17,2017.
We are working on characterising the impact on other ETCs
(if any) and it will be indicated here ASAP.

December 20, 2016 Release for CfP P99 phase2
  • The KMOS ETC updated with default PWV=10mm value
    and a warning for detetctor persistence
  • The GRAVITY ETC was updated: Baseline configuration,
    Low Resolution in Dual Mode, information requested in the OBs
  • VISIR Spectroscopy ETC: Noise factors and PSF model
    updated
  • New interactive plots have replaced the obsolete Java applets
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   VIMOS 
SPHERE-IRDIS  SPHERE-ZIMPOL 
VISIR  SPHERE-IFS 
VIMOS-MOS  VIMOS-IFU 
Paranal UT4 HAWK-I  SINFONI  MUSE 
Paranal VISTA VIRCAM   
Paranal VST OmegaCAM   
E-ELT E-ELT  E-ELT 
VLTI GRAVITY  VisCalc  CalVin 

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