Exposure
ID
GRAVI.2025-06-22T03:11:57.855_1
Header ID
GRAVI.2025-06-22T03:11:57.855
Date updated
2025-06-22 03:20:56 UTC+0000
Release date
2025-06-22 03:11:57 UTC+0000
UTC Start
2025-06-22 03:11:57.855
UTC End
2025-06-22 03:14:37.855
MJD Start
60848.13330851
MJD End
60848.13516036185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0023285
Ambient temperature (°C)
11.96
Seeing (arcsec)
0.685
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 66.7640 66.9230 264.5000 264.9000
K0-D0 94.6400 94.7950 243.7000 244.1000
K0-J3 55.5590 55.6220 327.2050 327.4690
G2-D0 39.9650 39.9710 207.4000 207.8000
G2-J3 64.3820 64.4060 34.3850 34.7810
D0-J3 104.1650 104.1950 31.7180 32.1090
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 60848.13330851
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 66.764
HIERARCH ESO ISS PBL12 END 66.923
HIERARCH ESO ISS PBLA12 START 264.5
HIERARCH ESO ISS PBLA12 END 264.9
HIERARCH ESO ISS PBL13 START 94.64
HIERARCH ESO ISS PBL13 END 94.795
HIERARCH ESO ISS PBLA13 START 243.7
HIERARCH ESO ISS PBLA13 END 244.1
HIERARCH ESO ISS PBL14 START 55.559
HIERARCH ESO ISS PBL14 END 55.622
HIERARCH ESO ISS PBLA14 START 327.205
HIERARCH ESO ISS PBLA14 END 327.469
HIERARCH ESO ISS PBL23 START 39.965
HIERARCH ESO ISS PBL23 END 39.971
HIERARCH ESO ISS PBLA23 START 207.4
HIERARCH ESO ISS PBLA23 END 207.8
HIERARCH ESO ISS PBL24 START 64.382
HIERARCH ESO ISS PBL24 END 64.406
HIERARCH ESO ISS PBLA24 START 34.385
HIERARCH ESO ISS PBLA24 END 34.781
HIERARCH ESO ISS PBL34 START 104.165
HIERARCH ESO ISS PBL34 END 104.195
HIERARCH ESO ISS PBLA34 START 31.718
HIERARCH ESO ISS PBLA34 END 32.109
HIERARCH ESO ISS AMBI TAU0 START 0.002175
HIERARCH ESO ISS AMBI TAU0 END 0.002482
HIERARCH ESO ISS AMBI TEMP 11.96
HIERARCH ESO ISS AMBI FWHM START 0.73
HIERARCH ESO ISS AMBI FWHM END 0.64