Exposure
ID
GRAVI.2025-08-15T02:18:05.295_1
Header ID
GRAVI.2025-08-15T02:18:05.295
Date updated
2025-08-15 02:30:50 UTC+0000
Release date
2025-08-15 02:18:05 UTC+0000
UTC Start
2025-08-15 02:18:05.295
UTC End
2025-08-15 02:20:45.295
MJD Start
60902.09589462
MJD End
60902.09774647185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0028185
Ambient temperature (°C)
10.93
Seeing (arcsec)
0.98
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 63.4630 63.1850 285.1000 285.6000
K0-D0 88.1350 87.7070 262.9000 263.2000
K0-J3 56.4700 56.4610 345.4850 345.8900
G2-D0 37.9420 37.8430 223.7000 223.9000
G2-J3 60.5940 60.3990 51.0340 51.2530
D0-J3 98.3430 98.0490 48.1980 48.4130
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 60902.09589462
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 63.463
HIERARCH ESO ISS PBL12 END 63.185
HIERARCH ESO ISS PBLA12 START 285.1
HIERARCH ESO ISS PBLA12 END 285.6
HIERARCH ESO ISS PBL13 START 88.135
HIERARCH ESO ISS PBL13 END 87.707
HIERARCH ESO ISS PBLA13 START 262.9
HIERARCH ESO ISS PBLA13 END 263.2
HIERARCH ESO ISS PBL14 START 56.47
HIERARCH ESO ISS PBL14 END 56.461
HIERARCH ESO ISS PBLA14 START 345.485
HIERARCH ESO ISS PBLA14 END 345.89
HIERARCH ESO ISS PBL23 START 37.942
HIERARCH ESO ISS PBL23 END 37.843
HIERARCH ESO ISS PBLA23 START 223.7
HIERARCH ESO ISS PBLA23 END 223.9
HIERARCH ESO ISS PBL24 START 60.594
HIERARCH ESO ISS PBL24 END 60.399
HIERARCH ESO ISS PBLA24 START 51.034
HIERARCH ESO ISS PBLA24 END 51.253
HIERARCH ESO ISS PBL34 START 98.343
HIERARCH ESO ISS PBL34 END 98.049
HIERARCH ESO ISS PBLA34 START 48.198
HIERARCH ESO ISS PBLA34 END 48.413
HIERARCH ESO ISS AMBI TAU0 START 0.002985
HIERARCH ESO ISS AMBI TAU0 END 0.002652
HIERARCH ESO ISS AMBI TEMP 10.93
HIERARCH ESO ISS AMBI FWHM START 0.95
HIERARCH ESO ISS AMBI FWHM END 1.01