Exposure
ID
GRAVI.2025-06-23T02:59:30.493_1
Header ID
GRAVI.2025-06-23T02:59:30.493
Date updated
2025-06-23 03:10:54 UTC+0000
Release date
2025-06-23 02:59:30 UTC+0000
UTC Start
2025-06-23 02:59:30.493
UTC End
2025-06-23 03:02:10.493
MJD Start
60849.12465848
MJD End
60849.12651033186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0036855
Ambient temperature (°C)
11.69
Seeing (arcsec)
0.54
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 66.2600 66.4420 263.4000 263.7000
K0-D0 94.1400 94.3210 242.5000 242.9000
K0-J3 55.3630 55.4330 326.4510 326.7070
G2-D0 39.9410 39.9500 206.3000 206.7000
G2-J3 64.3000 64.3300 33.2110 33.6180
D0-J3 104.0600 104.0990 30.5580 30.9600
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 60849.12465848
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 66.26
HIERARCH ESO ISS PBL12 END 66.442
HIERARCH ESO ISS PBLA12 START 263.4
HIERARCH ESO ISS PBLA12 END 263.7
HIERARCH ESO ISS PBL13 START 94.14
HIERARCH ESO ISS PBL13 END 94.321
HIERARCH ESO ISS PBLA13 START 242.5
HIERARCH ESO ISS PBLA13 END 242.9
HIERARCH ESO ISS PBL14 START 55.363
HIERARCH ESO ISS PBL14 END 55.433
HIERARCH ESO ISS PBLA14 START 326.451
HIERARCH ESO ISS PBLA14 END 326.707
HIERARCH ESO ISS PBL23 START 39.941
HIERARCH ESO ISS PBL23 END 39.95
HIERARCH ESO ISS PBLA23 START 206.3
HIERARCH ESO ISS PBLA23 END 206.7
HIERARCH ESO ISS PBL24 START 64.3
HIERARCH ESO ISS PBL24 END 64.33
HIERARCH ESO ISS PBLA24 START 33.211
HIERARCH ESO ISS PBLA24 END 33.618
HIERARCH ESO ISS PBL34 START 104.06
HIERARCH ESO ISS PBL34 END 104.099
HIERARCH ESO ISS PBLA34 START 30.558
HIERARCH ESO ISS PBLA34 END 30.96
HIERARCH ESO ISS AMBI TAU0 START 0.003662
HIERARCH ESO ISS AMBI TAU0 END 0.003709
HIERARCH ESO ISS AMBI TEMP 11.69
HIERARCH ESO ISS AMBI FWHM START 0.53
HIERARCH ESO ISS AMBI FWHM END 0.55