Exposure
ID
GRAVI.2025-08-28T00:32:49.528_1
Header ID
GRAVI.2025-08-28T00:32:49.528
Date updated
2025-08-28 00:46:04 UTC+0000
Release date
2026-08-28 00:46:04 UTC+0000
UTC Start
2025-08-28 00:32:49.528
UTC End
2025-08-28 00:36:49.528
MJD Start
60915.02279546
MJD End
60915.02557323778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.002973
Ambient temperature (°C)
12.59
Seeing (arcsec)
1.2000000000000002
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 48.5920 48.5670 149.9000 150.3000
A0-J2 128.9870 129.1080 91.5000 91.8000
A0-J6 168.5700 168.7090 24.4470 24.8990
B5-J2 111.4920 111.6510 69.7000 70.1000
B5-J6 200.6830 200.7700 13.0680 13.5230
J2-J6 167.5780 167.5040 339.3200 339.7360
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 60915.02279546
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 48.592
HIERARCH ESO ISS PBL12 END 48.567
HIERARCH ESO ISS PBLA12 START 149.9
HIERARCH ESO ISS PBLA12 END 150.3
HIERARCH ESO ISS PBL13 START 128.987
HIERARCH ESO ISS PBL13 END 129.108
HIERARCH ESO ISS PBLA13 START 91.5
HIERARCH ESO ISS PBLA13 END 91.8
HIERARCH ESO ISS PBL14 START 168.57
HIERARCH ESO ISS PBL14 END 168.709
HIERARCH ESO ISS PBLA14 START 24.447
HIERARCH ESO ISS PBLA14 END 24.899
HIERARCH ESO ISS PBL23 START 111.492
HIERARCH ESO ISS PBL23 END 111.651
HIERARCH ESO ISS PBLA23 START 69.7
HIERARCH ESO ISS PBLA23 END 70.1
HIERARCH ESO ISS PBL24 START 200.683
HIERARCH ESO ISS PBL24 END 200.77
HIERARCH ESO ISS PBLA24 START 13.068
HIERARCH ESO ISS PBLA24 END 13.523
HIERARCH ESO ISS PBL34 START 167.578
HIERARCH ESO ISS PBL34 END 167.504
HIERARCH ESO ISS PBLA34 START 339.32
HIERARCH ESO ISS PBLA34 END 339.736
HIERARCH ESO ISS AMBI TAU0 START 0.002532
HIERARCH ESO ISS AMBI TAU0 END 0.003414
HIERARCH ESO ISS AMBI TEMP 12.59
HIERARCH ESO ISS AMBI FWHM START 1.33
HIERARCH ESO ISS AMBI FWHM END 1.07