 Facility |
 Imaging |
 Spectroscopy |
| La Silla |
EFOSC2
SUSI
WFI SOFI |
EFOSC2
HARPS/NIRPS
FEROS SOFI |
| Paranal UT1 | FORS2 | FORS2 KMOS |
| Paranal UT2 | VISIR | UVES
UVES-FLAMES
GIRAFFE VISIR |
| Paranal UT3 | SPHERE-IRDIS SPHERE-ZIMPOL | X-SHOOTER
SPHERE-IFS
CRIRES |
| Paranal UT4 | HAWK-I ERIS | MUSE ERIS |
| Paranal ICCF | ESPRESSO | |
| Paranal VLTI | GRAVITY MATISSE VisCalc CalVin | |
| Paranal VISTA | VIRCAM | 4MOST |
| Paranal VST | OmegaCAM | |
| ELT | ELT imaging | ELT spectroscopy |
ESO Exposure Time Calculators
Documentation and Tools
- Support: https://support.eso.org
- Frequently Asked Questions
- Formula Book
- Database of efficiency profiles
- Deprecated ETCs
- SkyCalc Sky Model Calculator
- with advanced Almanac
- command-line interface skycalc_cli
News and Notes
August 31, 2023: P113 phase 1
August 24, 2023: P113 phase 1
Bug fixes
Details here
- HARPS/NIRPS detector parameters updated, including saturation limits. Introduced LSF convolution.
August 24, 2023: P113 phase 1
- ERIS-NIX LSS mode supported.
- XSHOOTER: Added a note about NIR stray-light.
- FORS2 imaging: Updated 530-25 +84 filter profile.
Bug fixes
Details here