Exposure
ID
GRAVI.2025-06-23T03:02:45.501_1
Header ID
GRAVI.2025-06-23T03:02:45.501
Date updated
2025-06-23 03:10:54 UTC+0000
Release date
2025-06-23 03:02:45 UTC+0000
UTC Start
2025-06-23 03:02:45.501
UTC End
2025-06-23 03:05:25.501
MJD Start
60849.12691552
MJD End
60849.128767371854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004164
Ambient temperature (°C)
11.79
Seeing (arcsec)
0.51
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 66.4610 66.6360 263.8000 264.2000
K0-D0 94.3400 94.5130 243.0000 243.4000
K0-J3 55.4410 55.5090 326.7380 327.0010
G2-D0 39.9510 39.9590 206.7000 207.1000
G2-J3 64.3330 64.3620 33.6650 34.0730
D0-J3 104.1030 104.1390 31.0060 31.4090
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 60849.12691552
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 66.461
HIERARCH ESO ISS PBL12 END 66.636
HIERARCH ESO ISS PBLA12 START 263.8
HIERARCH ESO ISS PBLA12 END 264.2
HIERARCH ESO ISS PBL13 START 94.34
HIERARCH ESO ISS PBL13 END 94.513
HIERARCH ESO ISS PBLA13 START 243.0
HIERARCH ESO ISS PBLA13 END 243.4
HIERARCH ESO ISS PBL14 START 55.441
HIERARCH ESO ISS PBL14 END 55.509
HIERARCH ESO ISS PBLA14 START 326.738
HIERARCH ESO ISS PBLA14 END 327.001
HIERARCH ESO ISS PBL23 START 39.951
HIERARCH ESO ISS PBL23 END 39.959
HIERARCH ESO ISS PBLA23 START 206.7
HIERARCH ESO ISS PBLA23 END 207.1
HIERARCH ESO ISS PBL24 START 64.333
HIERARCH ESO ISS PBL24 END 64.362
HIERARCH ESO ISS PBLA24 START 33.665
HIERARCH ESO ISS PBLA24 END 34.073
HIERARCH ESO ISS PBL34 START 104.103
HIERARCH ESO ISS PBL34 END 104.139
HIERARCH ESO ISS PBLA34 START 31.006
HIERARCH ESO ISS PBLA34 END 31.409
HIERARCH ESO ISS AMBI TAU0 START 0.003709
HIERARCH ESO ISS AMBI TAU0 END 0.004619
HIERARCH ESO ISS AMBI TEMP 11.79
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.47