Exposure
ID
GRAVI.2025-07-14T06:23:34.405_1
Header ID
GRAVI.2025-07-14T06:23:34.405
Date updated
2025-07-14 06:35:40 UTC+0000
Release date
2026-07-14 06:35:40 UTC+0000
UTC Start
2025-07-14 06:23:34.405
UTC End
2025-07-14 06:26:14.405
MJD Start
60870.26637043
MJD End
60870.268222281855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
12.53
Seeing (arcsec)
1.31
Observation
ID
68757
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
51160
Name
W_Sgr
RA
271.25258
DEC
-29.58012
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 79.5340 79.2650 146.1000 146.7000
A0-J2 101.6900 100.9190 120.7000 121.3000
A0-C1 19.8810 19.8140 146.1020 146.7590
G1-J2 45.3220 44.9290 71.9000 72.1000
G1-C1 59.6530 59.4510 326.0860 326.7430
J2-C1 84.1660 83.4610 294.8790 295.4700
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 60870.26637043
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME gam01 Sgr
HIERARCH ESO INS SOBJ NAME W_Sgr
RA 271.25258
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 79.534
HIERARCH ESO ISS PBL12 END 79.265
HIERARCH ESO ISS PBLA12 START 146.1
HIERARCH ESO ISS PBLA12 END 146.7
HIERARCH ESO ISS PBL13 START 101.69
HIERARCH ESO ISS PBL13 END 100.919
HIERARCH ESO ISS PBLA13 START 120.7
HIERARCH ESO ISS PBLA13 END 121.3
HIERARCH ESO ISS PBL14 START 19.881
HIERARCH ESO ISS PBL14 END 19.814
HIERARCH ESO ISS PBLA14 START 146.102
HIERARCH ESO ISS PBLA14 END 146.759
HIERARCH ESO ISS PBL23 START 45.322
HIERARCH ESO ISS PBL23 END 44.929
HIERARCH ESO ISS PBLA23 START 71.9
HIERARCH ESO ISS PBLA23 END 72.1
HIERARCH ESO ISS PBL24 START 59.653
HIERARCH ESO ISS PBL24 END 59.451
HIERARCH ESO ISS PBLA24 START 326.086
HIERARCH ESO ISS PBLA24 END 326.743
HIERARCH ESO ISS PBL34 START 84.166
HIERARCH ESO ISS PBL34 END 83.461
HIERARCH ESO ISS PBLA34 START 294.879
HIERARCH ESO ISS PBLA34 END 295.47
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 12.53
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31