Exposure
ID
GRAVI.2025-06-20T03:59:39.639_1
Header ID
GRAVI.2025-06-20T03:59:39.639
Date updated
2025-06-20 04:10:49 UTC+0000
Release date
2025-06-20 03:59:39 UTC+0000
UTC Start
2025-06-20 03:59:39.639
UTC End
2025-06-20 04:02:19.639
MJD Start
60846.16643101
MJD End
60846.16828286186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0055604999999999995
Ambient temperature (°C)
13.16
Seeing (arcsec)
0.72
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 68.2050 68.2500 269.5000 269.9000
K0-D0 95.9380 95.9620 249.0000 249.4000
K0-J3 56.2150 56.2480 331.0610 331.3670
G2-D0 39.9520 39.9420 212.4000 212.7000
G2-J3 64.4810 64.4660 39.4830 39.8350
D0-J3 104.2430 104.2170 36.7620 37.1110
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 60846.16643101
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 68.205
HIERARCH ESO ISS PBL12 END 68.25
HIERARCH ESO ISS PBLA12 START 269.5
HIERARCH ESO ISS PBLA12 END 269.9
HIERARCH ESO ISS PBL13 START 95.938
HIERARCH ESO ISS PBL13 END 95.962
HIERARCH ESO ISS PBLA13 START 249.0
HIERARCH ESO ISS PBLA13 END 249.4
HIERARCH ESO ISS PBL14 START 56.215
HIERARCH ESO ISS PBL14 END 56.248
HIERARCH ESO ISS PBLA14 START 331.061
HIERARCH ESO ISS PBLA14 END 331.367
HIERARCH ESO ISS PBL23 START 39.952
HIERARCH ESO ISS PBL23 END 39.942
HIERARCH ESO ISS PBLA23 START 212.4
HIERARCH ESO ISS PBLA23 END 212.7
HIERARCH ESO ISS PBL24 START 64.481
HIERARCH ESO ISS PBL24 END 64.466
HIERARCH ESO ISS PBLA24 START 39.483
HIERARCH ESO ISS PBLA24 END 39.835
HIERARCH ESO ISS PBL34 START 104.243
HIERARCH ESO ISS PBL34 END 104.217
HIERARCH ESO ISS PBLA34 START 36.762
HIERARCH ESO ISS PBLA34 END 37.111
HIERARCH ESO ISS AMBI TAU0 START 0.005351
HIERARCH ESO ISS AMBI TAU0 END 0.00577
HIERARCH ESO ISS AMBI TEMP 13.16
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.75