Exposure
ID
GRAVI.2025-05-22T06:20:38.082_1
Header ID
GRAVI.2025-05-22T06:20:38.082
Date updated
2025-05-22 06:31:19 UTC+0000
Release date
2025-05-22 06:20:38 UTC+0000
UTC Start
2025-05-22 06:20:38.082
UTC End
2025-05-22 06:23:18.082
MJD Start
60817.26432965
MJD End
60817.26618150186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0097985
Ambient temperature (°C)
14.61
Seeing (arcsec)
0.315
Observation
ID
67520
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
50219
Name
HD157919
RA
261.83876
DEC
-29.86781
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 68.3000 68.2670 272.9000 273.2000
K0-D0 95.7570 95.6820 252.4000 252.7000
K0-J3 56.4480 56.4650 333.9550 334.2920
G2-D0 39.7920 39.7660 215.4000 215.7000
G2-J3 64.2120 64.1630 42.5590 42.8840
D0-J3 103.8110 103.7350 39.8120 40.1350
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 60817.26432965
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME d Oph
HIERARCH ESO INS SOBJ NAME HD157919
RA 261.83876
DEC -29.86781
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 68.3
HIERARCH ESO ISS PBL12 END 68.267
HIERARCH ESO ISS PBLA12 START 272.9
HIERARCH ESO ISS PBLA12 END 273.2
HIERARCH ESO ISS PBL13 START 95.757
HIERARCH ESO ISS PBL13 END 95.682
HIERARCH ESO ISS PBLA13 START 252.4
HIERARCH ESO ISS PBLA13 END 252.7
HIERARCH ESO ISS PBL14 START 56.448
HIERARCH ESO ISS PBL14 END 56.465
HIERARCH ESO ISS PBLA14 START 333.955
HIERARCH ESO ISS PBLA14 END 334.292
HIERARCH ESO ISS PBL23 START 39.792
HIERARCH ESO ISS PBL23 END 39.766
HIERARCH ESO ISS PBLA23 START 215.4
HIERARCH ESO ISS PBLA23 END 215.7
HIERARCH ESO ISS PBL24 START 64.212
HIERARCH ESO ISS PBL24 END 64.163
HIERARCH ESO ISS PBLA24 START 42.559
HIERARCH ESO ISS PBLA24 END 42.884
HIERARCH ESO ISS PBL34 START 103.811
HIERARCH ESO ISS PBL34 END 103.735
HIERARCH ESO ISS PBLA34 START 39.812
HIERARCH ESO ISS PBLA34 END 40.135
HIERARCH ESO ISS AMBI TAU0 START 0.010454
HIERARCH ESO ISS AMBI TAU0 END 0.009143
HIERARCH ESO ISS AMBI TEMP 14.61
HIERARCH ESO ISS AMBI FWHM START 0.29
HIERARCH ESO ISS AMBI FWHM END 0.34