Exposure
ID
GRAVI.2025-07-24T05:19:34.634_1
Header ID
GRAVI.2025-07-24T05:19:34.634
Date updated
2025-07-24 05:30:48 UTC+0000
Release date
2025-07-24 05:19:34 UTC+0000
UTC Start
2025-07-24 05:19:34.634
UTC End
2025-07-24 05:22:14.634
MJD Start
60880.22192863
MJD End
60880.22378048186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0065655
Ambient temperature (°C)
12.71
Seeing (arcsec)
0.315
Observation
ID
68947
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
51299
Name
HD157919
RA
261.836189
DEC
-29.86782
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 78.5820 78.3250 149.1000 149.8000
A0-J2 98.5440 97.7650 123.7000 124.4000
A0-C1 19.6430 19.5790 149.1180 149.8030
G1-J2 43.5040 43.0870 73.0000 73.2000
G1-C1 58.9380 58.7460 329.1010 329.7860
J2-C1 81.2360 80.5170 297.7840 298.4230
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 60880.22192863
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME d Oph
HIERARCH ESO INS SOBJ NAME HD157919
RA 261.836189
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 78.582
HIERARCH ESO ISS PBL12 END 78.325
HIERARCH ESO ISS PBLA12 START 149.1
HIERARCH ESO ISS PBLA12 END 149.8
HIERARCH ESO ISS PBL13 START 98.544
HIERARCH ESO ISS PBL13 END 97.765
HIERARCH ESO ISS PBLA13 START 123.7
HIERARCH ESO ISS PBLA13 END 124.4
HIERARCH ESO ISS PBL14 START 19.643
HIERARCH ESO ISS PBL14 END 19.579
HIERARCH ESO ISS PBLA14 START 149.118
HIERARCH ESO ISS PBLA14 END 149.803
HIERARCH ESO ISS PBL23 START 43.504
HIERARCH ESO ISS PBL23 END 43.087
HIERARCH ESO ISS PBLA23 START 73.0
HIERARCH ESO ISS PBLA23 END 73.2
HIERARCH ESO ISS PBL24 START 58.938
HIERARCH ESO ISS PBL24 END 58.746
HIERARCH ESO ISS PBLA24 START 329.101
HIERARCH ESO ISS PBLA24 END 329.786
HIERARCH ESO ISS PBL34 START 81.236
HIERARCH ESO ISS PBL34 END 80.517
HIERARCH ESO ISS PBLA34 START 297.784
HIERARCH ESO ISS PBLA34 END 298.423
HIERARCH ESO ISS AMBI TAU0 START 0.005077
HIERARCH ESO ISS AMBI TAU0 END 0.008054
HIERARCH ESO ISS AMBI TEMP 12.71
HIERARCH ESO ISS AMBI FWHM START 0.32
HIERARCH ESO ISS AMBI FWHM END 0.31