Exposure
ID
GRAVI.2025-07-14T06:13:43.380_1
Header ID
GRAVI.2025-07-14T06:13:43.380
Date updated
2025-07-14 06:25:46 UTC+0000
Release date
2026-07-14 06:25:46 UTC+0000
UTC Start
2025-07-14 06:13:43.380
UTC End
2025-07-14 06:16:23.380
MJD Start
60870.25952986
MJD End
60870.261381711854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
12.56
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 80.4420 80.1690 143.9000 144.6000
A0-J2 104.2270 103.4720 118.7000 119.3000
A0-C1 20.1080 20.0390 143.9560 144.5920
G1-J2 46.5900 46.2160 71.2000 71.4000
G1-C1 60.3340 60.1290 323.9400 324.5750
J2-C1 86.4730 85.7880 292.9750 293.5350
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 60870.25952986
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 80.442
HIERARCH ESO ISS PBL12 END 80.169
HIERARCH ESO ISS PBLA12 START 143.9
HIERARCH ESO ISS PBLA12 END 144.6
HIERARCH ESO ISS PBL13 START 104.227
HIERARCH ESO ISS PBL13 END 103.472
HIERARCH ESO ISS PBLA13 START 118.7
HIERARCH ESO ISS PBLA13 END 119.3
HIERARCH ESO ISS PBL14 START 20.108
HIERARCH ESO ISS PBL14 END 20.039
HIERARCH ESO ISS PBLA14 START 143.956
HIERARCH ESO ISS PBLA14 END 144.592
HIERARCH ESO ISS PBL23 START 46.59
HIERARCH ESO ISS PBL23 END 46.216
HIERARCH ESO ISS PBLA23 START 71.2
HIERARCH ESO ISS PBLA23 END 71.4
HIERARCH ESO ISS PBL24 START 60.334
HIERARCH ESO ISS PBL24 END 60.129
HIERARCH ESO ISS PBLA24 START 323.94
HIERARCH ESO ISS PBLA24 END 324.575
HIERARCH ESO ISS PBL34 START 86.473
HIERARCH ESO ISS PBL34 END 85.788
HIERARCH ESO ISS PBLA34 START 292.975
HIERARCH ESO ISS PBLA34 END 293.535
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 12.56
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31