Exposure
ID
GRAVI.2025-06-20T03:56:24.631_1
Header ID
GRAVI.2025-06-20T03:56:24.631
Date updated
2025-06-20 04:10:49 UTC+0000
Release date
2025-06-20 03:56:24 UTC+0000
UTC Start
2025-06-20 03:56:24.631
UTC End
2025-06-20 03:59:04.631
MJD Start
60846.16417397
MJD End
60846.166025821854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004857500000000001
Ambient temperature (°C)
13.18
Seeing (arcsec)
0.85
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 68.1440 68.1990 269.1000 269.5000
K0-D0 95.9000 95.9350 248.6000 249.0000
K0-J3 56.1760 56.2110 330.7240 331.0280
G2-D0 39.9630 39.9530 212.0000 212.3000
G2-J3 64.4930 64.4820 39.0890 39.4450
D0-J3 104.2660 104.2460 36.3720 36.7240
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 60846.16417397
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 68.144
HIERARCH ESO ISS PBL12 END 68.199
HIERARCH ESO ISS PBLA12 START 269.1
HIERARCH ESO ISS PBLA12 END 269.5
HIERARCH ESO ISS PBL13 START 95.9
HIERARCH ESO ISS PBL13 END 95.935
HIERARCH ESO ISS PBLA13 START 248.6
HIERARCH ESO ISS PBLA13 END 249.0
HIERARCH ESO ISS PBL14 START 56.176
HIERARCH ESO ISS PBL14 END 56.211
HIERARCH ESO ISS PBLA14 START 330.724
HIERARCH ESO ISS PBLA14 END 331.028
HIERARCH ESO ISS PBL23 START 39.963
HIERARCH ESO ISS PBL23 END 39.953
HIERARCH ESO ISS PBLA23 START 212.0
HIERARCH ESO ISS PBLA23 END 212.3
HIERARCH ESO ISS PBL24 START 64.493
HIERARCH ESO ISS PBL24 END 64.482
HIERARCH ESO ISS PBLA24 START 39.089
HIERARCH ESO ISS PBLA24 END 39.445
HIERARCH ESO ISS PBL34 START 104.266
HIERARCH ESO ISS PBL34 END 104.246
HIERARCH ESO ISS PBLA34 START 36.372
HIERARCH ESO ISS PBLA34 END 36.724
HIERARCH ESO ISS AMBI TAU0 START 0.004269
HIERARCH ESO ISS AMBI TAU0 END 0.005446
HIERARCH ESO ISS AMBI TEMP 13.18
HIERARCH ESO ISS AMBI FWHM START 0.97
HIERARCH ESO ISS AMBI FWHM END 0.73