Exposure
ID
GRAVI.2025-06-22T03:05:15.839_1
Header ID
GRAVI.2025-06-22T03:05:15.839
Date updated
2025-06-22 03:15:50 UTC+0000
Release date
2025-06-22 03:05:15 UTC+0000
UTC Start
2025-06-22 03:05:15.839
UTC End
2025-06-22 03:07:55.839
MJD Start
60848.12865554
MJD End
60848.130507391856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002451
Ambient temperature (°C)
12.06
Seeing (arcsec)
0.6100000000000001
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 66.3750 66.5530 263.6000 264.0000
K0-D0 94.2540 94.4310 242.8000 243.2000
K0-J3 55.4070 55.4760 326.6080 326.8700
G2-D0 39.9470 39.9550 206.5000 206.9000
G2-J3 64.3190 64.3480 33.4630 33.8730
D0-J3 104.0850 104.1220 30.8070 31.2120
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 60848.12865554
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 66.375
HIERARCH ESO ISS PBL12 END 66.553
HIERARCH ESO ISS PBLA12 START 263.6
HIERARCH ESO ISS PBLA12 END 264.0
HIERARCH ESO ISS PBL13 START 94.254
HIERARCH ESO ISS PBL13 END 94.431
HIERARCH ESO ISS PBLA13 START 242.8
HIERARCH ESO ISS PBLA13 END 243.2
HIERARCH ESO ISS PBL14 START 55.407
HIERARCH ESO ISS PBL14 END 55.476
HIERARCH ESO ISS PBLA14 START 326.608
HIERARCH ESO ISS PBLA14 END 326.87
HIERARCH ESO ISS PBL23 START 39.947
HIERARCH ESO ISS PBL23 END 39.955
HIERARCH ESO ISS PBLA23 START 206.5
HIERARCH ESO ISS PBLA23 END 206.9
HIERARCH ESO ISS PBL24 START 64.319
HIERARCH ESO ISS PBL24 END 64.348
HIERARCH ESO ISS PBLA24 START 33.463
HIERARCH ESO ISS PBLA24 END 33.873
HIERARCH ESO ISS PBL34 START 104.085
HIERARCH ESO ISS PBL34 END 104.122
HIERARCH ESO ISS PBLA34 START 30.807
HIERARCH ESO ISS PBLA34 END 31.212
HIERARCH ESO ISS AMBI TAU0 START 0.002464
HIERARCH ESO ISS AMBI TAU0 END 0.002438
HIERARCH ESO ISS AMBI TEMP 12.06
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.56