Exposure
ID
GRAVI.2025-08-26T02:20:45.646_1
Header ID
GRAVI.2025-08-26T02:20:45.646
Date updated
2025-08-26 02:35:55 UTC+0000
Release date
2026-08-26 02:35:55 UTC+0000
UTC Start
2025-08-26 02:20:45.646
UTC End
2025-08-26 02:24:45.646
MJD Start
60913.09775053
MJD End
60913.10052830778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.004607
Ambient temperature (°C)
13.0
Seeing (arcsec)
0.8400000000000001
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 47.4310 47.3700 161.3000 161.8000
A0-J2 121.4410 120.6590 100.2000 100.6000
A0-J6 169.0660 168.9180 33.0910 33.3630
B5-J2 106.9080 106.3200 77.3000 77.6000
B5-J6 201.8530 201.8230 22.4440 22.7730
J2-J6 165.3360 165.2520 350.5180 351.0460
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 60913.09775053
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 47.431
HIERARCH ESO ISS PBL12 END 47.37
HIERARCH ESO ISS PBLA12 START 161.3
HIERARCH ESO ISS PBLA12 END 161.8
HIERARCH ESO ISS PBL13 START 121.441
HIERARCH ESO ISS PBL13 END 120.659
HIERARCH ESO ISS PBLA13 START 100.2
HIERARCH ESO ISS PBLA13 END 100.6
HIERARCH ESO ISS PBL14 START 169.066
HIERARCH ESO ISS PBL14 END 168.918
HIERARCH ESO ISS PBLA14 START 33.091
HIERARCH ESO ISS PBLA14 END 33.363
HIERARCH ESO ISS PBL23 START 106.908
HIERARCH ESO ISS PBL23 END 106.32
HIERARCH ESO ISS PBLA23 START 77.3
HIERARCH ESO ISS PBLA23 END 77.6
HIERARCH ESO ISS PBL24 START 201.853
HIERARCH ESO ISS PBL24 END 201.823
HIERARCH ESO ISS PBLA24 START 22.444
HIERARCH ESO ISS PBLA24 END 22.773
HIERARCH ESO ISS PBL34 START 165.336
HIERARCH ESO ISS PBL34 END 165.252
HIERARCH ESO ISS PBLA34 START 350.518
HIERARCH ESO ISS PBLA34 END 351.046
HIERARCH ESO ISS AMBI TAU0 START 0.004607
HIERARCH ESO ISS AMBI TAU0 END 0.004607
HIERARCH ESO ISS AMBI TEMP 13.0
HIERARCH ESO ISS AMBI FWHM START 0.87
HIERARCH ESO ISS AMBI FWHM END 0.81