Exposure
ID
GRAVI.2025-08-15T02:08:14.270_1
Header ID
GRAVI.2025-08-15T02:08:14.270
Date updated
2025-08-15 02:20:42 UTC+0000
Release date
2025-08-15 02:08:14 UTC+0000
UTC Start
2025-08-15 02:08:14.270
UTC End
2025-08-15 02:10:54.270
MJD Start
60902.08905405
MJD End
60902.09090590185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003364
Ambient temperature (°C)
11.12
Seeing (arcsec)
0.79
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 64.3400 64.0860 283.7000 284.1000
K0-D0 89.4830 89.0930 261.8000 262.1000
K0-J3 56.4990 56.4910 344.1440 344.5430
G2-D0 38.2540 38.1640 222.9000 223.2000
G2-J3 61.2090 61.0310 50.2750 50.5060
D0-J3 99.2690 99.0010 47.4510 47.6780
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 60902.08905405
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 64.34
HIERARCH ESO ISS PBL12 END 64.086
HIERARCH ESO ISS PBLA12 START 283.7
HIERARCH ESO ISS PBLA12 END 284.1
HIERARCH ESO ISS PBL13 START 89.483
HIERARCH ESO ISS PBL13 END 89.093
HIERARCH ESO ISS PBLA13 START 261.8
HIERARCH ESO ISS PBLA13 END 262.1
HIERARCH ESO ISS PBL14 START 56.499
HIERARCH ESO ISS PBL14 END 56.491
HIERARCH ESO ISS PBLA14 START 344.144
HIERARCH ESO ISS PBLA14 END 344.543
HIERARCH ESO ISS PBL23 START 38.254
HIERARCH ESO ISS PBL23 END 38.164
HIERARCH ESO ISS PBLA23 START 222.9
HIERARCH ESO ISS PBLA23 END 223.2
HIERARCH ESO ISS PBL24 START 61.209
HIERARCH ESO ISS PBL24 END 61.031
HIERARCH ESO ISS PBLA24 START 50.275
HIERARCH ESO ISS PBLA24 END 50.506
HIERARCH ESO ISS PBL34 START 99.269
HIERARCH ESO ISS PBL34 END 99.001
HIERARCH ESO ISS PBLA34 START 47.451
HIERARCH ESO ISS PBLA34 END 47.678
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 0.79