Exposure
ID
GRAVI.2025-08-26T02:11:27.622_1
Header ID
GRAVI.2025-08-26T02:11:27.622
Date updated
2025-08-26 02:26:22 UTC+0000
Release date
2026-08-26 02:26:22 UTC+0000
UTC Start
2025-08-26 02:11:27.622
UTC End
2025-08-26 02:15:27.622
MJD Start
60913.09129192
MJD End
60913.09406969778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0044335
Ambient temperature (°C)
12.95
Seeing (arcsec)
0.92
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 47.5650 47.5040 160.0000 160.6000
A0-J2 123.0250 122.3210 99.3000 99.7000
A0-J6 169.3320 169.2200 32.4690 32.7580
B5-J2 108.0800 107.5620 76.7000 77.0000
B5-J6 201.8850 201.8760 21.7050 22.0470
J2-J6 165.5310 165.4400 349.3750 349.8960
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 60913.09129192
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 47.565
HIERARCH ESO ISS PBL12 END 47.504
HIERARCH ESO ISS PBLA12 START 160.0
HIERARCH ESO ISS PBLA12 END 160.6
HIERARCH ESO ISS PBL13 START 123.025
HIERARCH ESO ISS PBL13 END 122.321
HIERARCH ESO ISS PBLA13 START 99.3
HIERARCH ESO ISS PBLA13 END 99.7
HIERARCH ESO ISS PBL14 START 169.332
HIERARCH ESO ISS PBL14 END 169.22
HIERARCH ESO ISS PBLA14 START 32.469
HIERARCH ESO ISS PBLA14 END 32.758
HIERARCH ESO ISS PBL23 START 108.08
HIERARCH ESO ISS PBL23 END 107.562
HIERARCH ESO ISS PBLA23 START 76.7
HIERARCH ESO ISS PBLA23 END 77.0
HIERARCH ESO ISS PBL24 START 201.885
HIERARCH ESO ISS PBL24 END 201.876
HIERARCH ESO ISS PBLA24 START 21.705
HIERARCH ESO ISS PBLA24 END 22.047
HIERARCH ESO ISS PBL34 START 165.531
HIERARCH ESO ISS PBL34 END 165.44
HIERARCH ESO ISS PBLA34 START 349.375
HIERARCH ESO ISS PBLA34 END 349.896
HIERARCH ESO ISS AMBI TAU0 START 0.00426
HIERARCH ESO ISS AMBI TAU0 END 0.004607
HIERARCH ESO ISS AMBI TEMP 12.95
HIERARCH ESO ISS AMBI FWHM START 0.91
HIERARCH ESO ISS AMBI FWHM END 0.93