Exposure
ID
GRAVI.2025-06-20T04:06:21.656_1
Header ID
GRAVI.2025-06-20T04:06:21.656
Date updated
2025-06-20 04:15:46 UTC+0000
Release date
2025-06-20 04:06:21 UTC+0000
UTC Start
2025-06-20 04:06:21.656
UTC End
2025-06-20 04:09:01.656
MJD Start
60846.17108398
MJD End
60846.172935831855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0045249999999999995
Ambient temperature (°C)
13.13
Seeing (arcsec)
0.86
Observation
ID
68167
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
50672
Name
HD157919
RA
261.838756
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 68.2950 68.3210 270.4000 270.7000
K0-D0 95.9770 95.9760 249.9000 250.3000
K0-J3 56.2870 56.3160 331.7630 332.0760
G2-D0 39.9260 39.9110 213.1000 213.5000
G2-J3 64.4420 64.4190 40.2790 40.6230
D0-J3 104.1770 104.1390 37.5510 37.8920
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 60846.17108398
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME d Oph
HIERARCH ESO INS SOBJ NAME HD157919
RA 261.838756
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 68.295
HIERARCH ESO ISS PBL12 END 68.321
HIERARCH ESO ISS PBLA12 START 270.4
HIERARCH ESO ISS PBLA12 END 270.7
HIERARCH ESO ISS PBL13 START 95.977
HIERARCH ESO ISS PBL13 END 95.976
HIERARCH ESO ISS PBLA13 START 249.9
HIERARCH ESO ISS PBLA13 END 250.3
HIERARCH ESO ISS PBL14 START 56.287
HIERARCH ESO ISS PBL14 END 56.316
HIERARCH ESO ISS PBLA14 START 331.763
HIERARCH ESO ISS PBLA14 END 332.076
HIERARCH ESO ISS PBL23 START 39.926
HIERARCH ESO ISS PBL23 END 39.911
HIERARCH ESO ISS PBLA23 START 213.1
HIERARCH ESO ISS PBLA23 END 213.5
HIERARCH ESO ISS PBL24 START 64.442
HIERARCH ESO ISS PBL24 END 64.419
HIERARCH ESO ISS PBLA24 START 40.279
HIERARCH ESO ISS PBLA24 END 40.623
HIERARCH ESO ISS PBL34 START 104.177
HIERARCH ESO ISS PBL34 END 104.139
HIERARCH ESO ISS PBLA34 START 37.551
HIERARCH ESO ISS PBLA34 END 37.892
HIERARCH ESO ISS AMBI TAU0 START 0.004716
HIERARCH ESO ISS AMBI TAU0 END 0.004334
HIERARCH ESO ISS AMBI TEMP 13.13
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.82