Exposure
ID
GRAVI.2025-08-28T00:37:22.540_1
Header ID
GRAVI.2025-08-28T00:37:22.540
Date updated
2025-08-28 00:50:57 UTC+0000
Release date
2026-08-28 00:50:57 UTC+0000
UTC Start
2025-08-28 00:37:22.540
UTC End
2025-08-28 00:41:22.540
MJD Start
60915.02595532
MJD End
60915.02873309778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0032925000000000003
Ambient temperature (°C)
12.65
Seeing (arcsec)
1.0950000000000002
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 48.5660 48.5380 150.3000 150.7000
A0-J2 129.1150 129.1930 91.8000 92.2000
A0-J6 168.7170 168.8480 24.9270 25.3670
B5-J2 111.6600 111.7860 70.1000 70.5000
B5-J6 200.7760 200.8620 13.5510 13.9980
J2-J6 167.4990 167.4210 339.7630 340.1820
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 60915.02595532
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 48.566
HIERARCH ESO ISS PBL12 END 48.538
HIERARCH ESO ISS PBLA12 START 150.3
HIERARCH ESO ISS PBLA12 END 150.7
HIERARCH ESO ISS PBL13 START 129.115
HIERARCH ESO ISS PBL13 END 129.193
HIERARCH ESO ISS PBLA13 START 91.8
HIERARCH ESO ISS PBLA13 END 92.2
HIERARCH ESO ISS PBL14 START 168.717
HIERARCH ESO ISS PBL14 END 168.848
HIERARCH ESO ISS PBLA14 START 24.927
HIERARCH ESO ISS PBLA14 END 25.367
HIERARCH ESO ISS PBL23 START 111.66
HIERARCH ESO ISS PBL23 END 111.786
HIERARCH ESO ISS PBLA23 START 70.1
HIERARCH ESO ISS PBLA23 END 70.5
HIERARCH ESO ISS PBL24 START 200.776
HIERARCH ESO ISS PBL24 END 200.862
HIERARCH ESO ISS PBLA24 START 13.551
HIERARCH ESO ISS PBLA24 END 13.998
HIERARCH ESO ISS PBL34 START 167.499
HIERARCH ESO ISS PBL34 END 167.421
HIERARCH ESO ISS PBLA34 START 339.763
HIERARCH ESO ISS PBLA34 END 340.182
HIERARCH ESO ISS AMBI TAU0 START 0.003414
HIERARCH ESO ISS AMBI TAU0 END 0.003171
HIERARCH ESO ISS AMBI TEMP 12.65
HIERARCH ESO ISS AMBI FWHM START 1.07
HIERARCH ESO ISS AMBI FWHM END 1.12