Exposure
ID
GRAVI.2025-08-24T02:33:52.675_1
Header ID
GRAVI.2025-08-24T02:33:52.675
Date updated
2025-08-24 02:45:53 UTC+0000
Release date
2026-08-24 02:45:52 UTC+0000
UTC Start
2025-08-24 02:33:52.675
UTC End
2025-08-24 02:37:52.675
MJD Start
60911.10685967
MJD End
60911.10963744778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0018815
Ambient temperature (°C)
5.42
Seeing (arcsec)
0.9450000000000001
Observation
ID
70094
Category
science
Program ID
115.282E.002
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
52007
Name
U_Sgr
RA
277.971025
DEC
-19.12511
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 47.3560 47.2950 162.0000 162.5000
A0-J2 120.4660 119.6440 100.7000 101.1000
A0-J6 168.8800 168.7110 33.4280 33.6890
B5-J2 106.1750 105.5500 77.7000 77.9000
B5-J6 201.8140 201.7730 22.8510 23.1710
J2-J6 165.2320 165.1530 351.1740 351.7030
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60911.10685967
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V U Sgr
HIERARCH ESO INS SOBJ NAME U_Sgr
RA 277.971025
DEC -19.12511
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 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 47.356
HIERARCH ESO ISS PBL12 END 47.295
HIERARCH ESO ISS PBLA12 START 162.0
HIERARCH ESO ISS PBLA12 END 162.5
HIERARCH ESO ISS PBL13 START 120.466
HIERARCH ESO ISS PBL13 END 119.644
HIERARCH ESO ISS PBLA13 START 100.7
HIERARCH ESO ISS PBLA13 END 101.1
HIERARCH ESO ISS PBL14 START 168.88
HIERARCH ESO ISS PBL14 END 168.711
HIERARCH ESO ISS PBLA14 START 33.428
HIERARCH ESO ISS PBLA14 END 33.689
HIERARCH ESO ISS PBL23 START 106.175
HIERARCH ESO ISS PBL23 END 105.55
HIERARCH ESO ISS PBLA23 START 77.7
HIERARCH ESO ISS PBLA23 END 77.9
HIERARCH ESO ISS PBL24 START 201.814
HIERARCH ESO ISS PBL24 END 201.773
HIERARCH ESO ISS PBLA24 START 22.851
HIERARCH ESO ISS PBLA24 END 23.171
HIERARCH ESO ISS PBL34 START 165.232
HIERARCH ESO ISS PBL34 END 165.153
HIERARCH ESO ISS PBLA34 START 351.174
HIERARCH ESO ISS PBLA34 END 351.703
HIERARCH ESO ISS AMBI TAU0 START 0.001963
HIERARCH ESO ISS AMBI TAU0 END 0.0018
HIERARCH ESO ISS AMBI TEMP 5.42
HIERARCH ESO ISS AMBI FWHM START 0.92
HIERARCH ESO ISS AMBI FWHM END 0.97