Exposure
ID
GRAVI.2025-08-15T02:11:29.278_1
Header ID
GRAVI.2025-08-15T02:11:29.278
Date updated
2025-08-15 02:25:37 UTC+0000
Release date
2025-08-15 02:11:29 UTC+0000
UTC Start
2025-08-15 02:11:29.278
UTC End
2025-08-15 02:14:09.278
MJD Start
60902.09131109
MJD End
60902.093162941856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003364
Ambient temperature (°C)
11.12
Seeing (arcsec)
0.8500000000000001
Observation
ID
70015
Category
calibrator
Program ID
115.282E.001
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
51946
Name
HD157919
RA
261.838751
DEC
-29.86782
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 64.0600 63.7980 284.2000 284.6000
K0-D0 89.0530 88.6510 262.2000 262.5000
K0-J3 56.4900 56.4810 344.5840 344.9850
G2-D0 38.1540 38.0610 223.2000 223.4000
G2-J3 61.0120 60.8290 50.5290 50.7560
D0-J3 98.9730 98.6970 47.7010 47.9250
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60902.09131109
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME d Oph
HIERARCH ESO INS SOBJ NAME HD157919
RA 261.838751
DEC -29.86782
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 64.06
HIERARCH ESO ISS PBL12 END 63.798
HIERARCH ESO ISS PBLA12 START 284.2
HIERARCH ESO ISS PBLA12 END 284.6
HIERARCH ESO ISS PBL13 START 89.053
HIERARCH ESO ISS PBL13 END 88.651
HIERARCH ESO ISS PBLA13 START 262.2
HIERARCH ESO ISS PBLA13 END 262.5
HIERARCH ESO ISS PBL14 START 56.49
HIERARCH ESO ISS PBL14 END 56.481
HIERARCH ESO ISS PBLA14 START 344.584
HIERARCH ESO ISS PBLA14 END 344.985
HIERARCH ESO ISS PBL23 START 38.154
HIERARCH ESO ISS PBL23 END 38.061
HIERARCH ESO ISS PBLA23 START 223.2
HIERARCH ESO ISS PBLA23 END 223.4
HIERARCH ESO ISS PBL24 START 61.012
HIERARCH ESO ISS PBL24 END 60.829
HIERARCH ESO ISS PBLA24 START 50.529
HIERARCH ESO ISS PBLA24 END 50.756
HIERARCH ESO ISS PBL34 START 98.973
HIERARCH ESO ISS PBL34 END 98.697
HIERARCH ESO ISS PBLA34 START 47.701
HIERARCH ESO ISS PBLA34 END 47.925
HIERARCH ESO ISS AMBI TAU0 START 0.003364
HIERARCH ESO ISS AMBI TAU0 END 0.003364
HIERARCH ESO ISS AMBI TEMP 11.12
HIERARCH ESO ISS AMBI FWHM START 0.79
HIERARCH ESO ISS AMBI FWHM END 0.91