Exposure
ID
GRAVI.2025-08-14T04:18:26.349_1
Header ID
GRAVI.2025-08-14T04:18:26.349
Date updated
2025-08-14 04:25:56 UTC+0000
Release date
2026-08-14 04:25:56 UTC+0000
UTC Start
2025-08-14 04:18:26.349
UTC End
2025-08-14 04:21:06.349
MJD Start
60901.17947163
MJD End
60901.181323481855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.011639
Ambient temperature (°C)
14.5
Seeing (arcsec)
0.7949999999999999
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 94.7820 93.9240 257.5000 257.7000
K0-D0 73.0670 72.3610 272.1000 272.5000
K0-J3 56.2260 56.2230 356.7750 357.2130
B2-D0 30.3720 30.2620 40.0000 40.1000
B2-J3 117.7750 117.1600 49.3540 49.4650
D0-J3 87.9500 87.4440 52.5880 52.7030
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 60901.17947163
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 94.782
HIERARCH ESO ISS PBL12 END 93.924
HIERARCH ESO ISS PBLA12 START 257.5
HIERARCH ESO ISS PBLA12 END 257.7
HIERARCH ESO ISS PBL13 START 73.067
HIERARCH ESO ISS PBL13 END 72.361
HIERARCH ESO ISS PBLA13 START 272.1
HIERARCH ESO ISS PBLA13 END 272.5
HIERARCH ESO ISS PBL14 START 56.226
HIERARCH ESO ISS PBL14 END 56.223
HIERARCH ESO ISS PBLA14 START 356.775
HIERARCH ESO ISS PBLA14 END 357.213
HIERARCH ESO ISS PBL23 START 30.372
HIERARCH ESO ISS PBL23 END 30.262
HIERARCH ESO ISS PBLA23 START 40.0
HIERARCH ESO ISS PBLA23 END 40.1
HIERARCH ESO ISS PBL24 START 117.775
HIERARCH ESO ISS PBL24 END 117.16
HIERARCH ESO ISS PBLA24 START 49.354
HIERARCH ESO ISS PBLA24 END 49.465
HIERARCH ESO ISS PBL34 START 87.95
HIERARCH ESO ISS PBL34 END 87.444
HIERARCH ESO ISS PBLA34 START 52.588
HIERARCH ESO ISS PBLA34 END 52.703
HIERARCH ESO ISS AMBI TAU0 START 0.013445
HIERARCH ESO ISS AMBI TAU0 END 0.009833
HIERARCH ESO ISS AMBI TEMP 14.5
HIERARCH ESO ISS AMBI FWHM START 0.88
HIERARCH ESO ISS AMBI FWHM END 0.71