 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-NIX | MUSE ERIS-SPIFFIER |
| 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
March 9, 2023: Note!
Bug fixed
in
ERIS SPIFFIER and HARPS/NIRPS ETCs
ERIS SPIFFIER and HARPS/NIRPS ETCs
February 27, 2023: P112 phase1 released
The following ETCs have been updated:
- ERIS NIX: APP and SAM modes supported
- ERIS SPIFFIER throughput model adjusted
- HARPS/NIRPS solo modes supported
- GRAVITY and MATISSE: Updated baselines