Exposure
ID
GRAVI.2025-08-24T02:24:34.652_1
Header ID
GRAVI.2025-08-24T02:24:34.652
Date updated
2025-08-24 02:35:58 UTC+0000
Release date
2026-08-24 02:35:57 UTC+0000
UTC Start
2025-08-24 02:24:34.652
UTC End
2025-08-24 02:28:34.652
MJD Start
60911.10040107
MJD End
60911.10317884778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.002334
Ambient temperature (°C)
5.23
Seeing (arcsec)
0.81
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 47.4890 47.4280 160.7000 161.3000
A0-J2 122.1500 121.3980 99.8000 100.2000
A0-J6 169.1910 169.0580 32.8260 33.1070
B5-J2 107.4350 106.8760 77.0000 77.3000
B5-J6 201.8720 201.8510 22.1280 22.4630
J2-J6 165.4180 165.3310 350.0210 350.5480
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 60911.10040107
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 47.489
HIERARCH ESO ISS PBL12 END 47.428
HIERARCH ESO ISS PBLA12 START 160.7
HIERARCH ESO ISS PBLA12 END 161.3
HIERARCH ESO ISS PBL13 START 122.15
HIERARCH ESO ISS PBL13 END 121.398
HIERARCH ESO ISS PBLA13 START 99.8
HIERARCH ESO ISS PBLA13 END 100.2
HIERARCH ESO ISS PBL14 START 169.191
HIERARCH ESO ISS PBL14 END 169.058
HIERARCH ESO ISS PBLA14 START 32.826
HIERARCH ESO ISS PBLA14 END 33.107
HIERARCH ESO ISS PBL23 START 107.435
HIERARCH ESO ISS PBL23 END 106.876
HIERARCH ESO ISS PBLA23 START 77.0
HIERARCH ESO ISS PBLA23 END 77.3
HIERARCH ESO ISS PBL24 START 201.872
HIERARCH ESO ISS PBL24 END 201.851
HIERARCH ESO ISS PBLA24 START 22.128
HIERARCH ESO ISS PBLA24 END 22.463
HIERARCH ESO ISS PBL34 START 165.418
HIERARCH ESO ISS PBL34 END 165.331
HIERARCH ESO ISS PBLA34 START 350.021
HIERARCH ESO ISS PBLA34 END 350.548
HIERARCH ESO ISS AMBI TAU0 START 0.002334
HIERARCH ESO ISS AMBI TAU0 END 0.002334
HIERARCH ESO ISS AMBI TEMP 5.23
HIERARCH ESO ISS AMBI FWHM START 0.82
HIERARCH ESO ISS AMBI FWHM END 0.8