Exposure
ID
GRAVI.2025-08-14T04:28:23.374_1
Header ID
GRAVI.2025-08-14T04:28:23.374
Date updated
2025-08-14 04:40:56 UTC+0000
Release date
2026-08-14 04:40:56 UTC+0000
UTC Start
2025-08-14 04:28:23.374
UTC End
2025-08-14 04:31:03.374
MJD Start
60901.18638164
MJD End
60901.188233491855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.008812
Ambient temperature (°C)
14.54
Seeing (arcsec)
0.96
Observation
ID
69990
Category
science
Program ID
115.282E.001
Program Title
CIRCUMSTELLAR ENVELOPES OF NEARBY CEPHEIDS WITH GRAVITY TO REFINE THE PERIOD-LUMINOSITY RELATION IN THE JWST ERA
Program Type
Normal
PI / COI
HOCDÉ / NARDETTO / GALLENNE / KERVELLA / PIETRZYNSKI / GIEREN / MÉRAND / BRAS / BAILLEUL / LEFTLEY / AFANASIEV
Target
ID
51929
Name
W_Sgr
RA
271.253858
DEC
-29.58012
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 91.8500 90.9510 258.3000 258.6000
K0-D0 70.6590 69.9230 273.4000 273.8000
K0-J3 56.2160 56.2140 358.2470 358.6860
B2-D0 29.9930 29.8760 40.3000 40.4000
B2-J3 115.6720 115.0260 49.7070 49.8030
D0-J3 86.2180 85.6860 52.9550 53.0550
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60901.18638164
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME gam01 Sgr
HIERARCH ESO INS SOBJ NAME W_Sgr
RA 271.253858
DEC -29.58012
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 91.85
HIERARCH ESO ISS PBL12 END 90.951
HIERARCH ESO ISS PBLA12 START 258.3
HIERARCH ESO ISS PBLA12 END 258.6
HIERARCH ESO ISS PBL13 START 70.659
HIERARCH ESO ISS PBL13 END 69.923
HIERARCH ESO ISS PBLA13 START 273.4
HIERARCH ESO ISS PBLA13 END 273.8
HIERARCH ESO ISS PBL14 START 56.216
HIERARCH ESO ISS PBL14 END 56.214
HIERARCH ESO ISS PBLA14 START 358.247
HIERARCH ESO ISS PBLA14 END 358.686
HIERARCH ESO ISS PBL23 START 29.993
HIERARCH ESO ISS PBL23 END 29.876
HIERARCH ESO ISS PBLA23 START 40.3
HIERARCH ESO ISS PBLA23 END 40.4
HIERARCH ESO ISS PBL24 START 115.672
HIERARCH ESO ISS PBL24 END 115.026
HIERARCH ESO ISS PBLA24 START 49.707
HIERARCH ESO ISS PBLA24 END 49.803
HIERARCH ESO ISS PBL34 START 86.218
HIERARCH ESO ISS PBL34 END 85.686
HIERARCH ESO ISS PBLA34 START 52.955
HIERARCH ESO ISS PBLA34 END 53.055
HIERARCH ESO ISS AMBI TAU0 START 0.007462
HIERARCH ESO ISS AMBI TAU0 END 0.010162
HIERARCH ESO ISS AMBI TEMP 14.54
HIERARCH ESO ISS AMBI FWHM START 1.04
HIERARCH ESO ISS AMBI FWHM END 0.88