Exposure
ID
GRAVI.2025-08-26T02:25:18.658_1
Header ID
GRAVI.2025-08-26T02:25:18.658
Date updated
2025-08-26 02:40:57 UTC+0000
Release date
2026-08-26 02:40:57 UTC+0000
UTC Start
2025-08-26 02:25:18.658
UTC End
2025-08-26 02:29:18.658
MJD Start
60913.10091039
MJD End
60913.10368816778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.004464
Ambient temperature (°C)
13.14
Seeing (arcsec)
0.8500000000000001
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 47.3660 47.3050 161.9000 162.4000
A0-J2 120.5990 119.7800 100.6000 101.0000
A0-J6 168.9060 168.7400 33.3830 33.6460
B5-J2 106.2750 105.6530 77.6000 77.9000
B5-J6 201.8200 201.7800 22.7970 23.1190
J2-J6 165.2460 165.1660 351.0850 351.6170
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 60913.10091039
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 47.366
HIERARCH ESO ISS PBL12 END 47.305
HIERARCH ESO ISS PBLA12 START 161.9
HIERARCH ESO ISS PBLA12 END 162.4
HIERARCH ESO ISS PBL13 START 120.599
HIERARCH ESO ISS PBL13 END 119.78
HIERARCH ESO ISS PBLA13 START 100.6
HIERARCH ESO ISS PBLA13 END 101.0
HIERARCH ESO ISS PBL14 START 168.906
HIERARCH ESO ISS PBL14 END 168.74
HIERARCH ESO ISS PBLA14 START 33.383
HIERARCH ESO ISS PBLA14 END 33.646
HIERARCH ESO ISS PBL23 START 106.275
HIERARCH ESO ISS PBL23 END 105.653
HIERARCH ESO ISS PBLA23 START 77.6
HIERARCH ESO ISS PBLA23 END 77.9
HIERARCH ESO ISS PBL24 START 201.82
HIERARCH ESO ISS PBL24 END 201.78
HIERARCH ESO ISS PBLA24 START 22.797
HIERARCH ESO ISS PBLA24 END 23.119
HIERARCH ESO ISS PBL34 START 165.246
HIERARCH ESO ISS PBL34 END 165.166
HIERARCH ESO ISS PBLA34 START 351.085
HIERARCH ESO ISS PBLA34 END 351.617
HIERARCH ESO ISS AMBI TAU0 START 0.004607
HIERARCH ESO ISS AMBI TAU0 END 0.004321
HIERARCH ESO ISS AMBI TEMP 13.14
HIERARCH ESO ISS AMBI FWHM START 0.81
HIERARCH ESO ISS AMBI FWHM END 0.89