Exposure
ID
GRAVI.2025-08-15T02:01:32.252_1
Header ID
GRAVI.2025-08-15T02:01:32.252
Date updated
2025-08-15 02:10:52 UTC+0000
Release date
2025-08-15 02:01:32 UTC+0000
UTC Start
2025-08-15 02:01:32.252
UTC End
2025-08-15 02:04:12.252
MJD Start
60902.08440107
MJD End
60902.08625292186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002702
Ambient temperature (°C)
11.2
Seeing (arcsec)
0.96
Observation
ID
70015
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
51946
Name
HD157919
RA
261.838751
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 64.8920 64.6550 282.7000 283.2000
K0-D0 90.3290 89.9650 261.0000 261.4000
K0-J3 56.5170 56.5090 343.2430 343.6380
G2-D0 38.4490 38.3650 222.4000 222.6000
G2-J3 61.5940 61.4280 49.7380 49.9760
D0-J3 99.8500 99.5990 46.9220 47.1560
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 60902.08440107
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME d Oph
HIERARCH ESO INS SOBJ NAME HD157919
RA 261.838751
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 64.892
HIERARCH ESO ISS PBL12 END 64.655
HIERARCH ESO ISS PBLA12 START 282.7
HIERARCH ESO ISS PBLA12 END 283.2
HIERARCH ESO ISS PBL13 START 90.329
HIERARCH ESO ISS PBL13 END 89.965
HIERARCH ESO ISS PBLA13 START 261.0
HIERARCH ESO ISS PBLA13 END 261.4
HIERARCH ESO ISS PBL14 START 56.517
HIERARCH ESO ISS PBL14 END 56.509
HIERARCH ESO ISS PBLA14 START 343.243
HIERARCH ESO ISS PBLA14 END 343.638
HIERARCH ESO ISS PBL23 START 38.449
HIERARCH ESO ISS PBL23 END 38.365
HIERARCH ESO ISS PBLA23 START 222.4
HIERARCH ESO ISS PBLA23 END 222.6
HIERARCH ESO ISS PBL24 START 61.594
HIERARCH ESO ISS PBL24 END 61.428
HIERARCH ESO ISS PBLA24 START 49.738
HIERARCH ESO ISS PBLA24 END 49.976
HIERARCH ESO ISS PBL34 START 99.85
HIERARCH ESO ISS PBL34 END 99.599
HIERARCH ESO ISS PBLA34 START 46.922
HIERARCH ESO ISS PBLA34 END 47.156
HIERARCH ESO ISS AMBI TAU0 START 0.002594
HIERARCH ESO ISS AMBI TAU0 END 0.00281
HIERARCH ESO ISS AMBI TEMP 11.2
HIERARCH ESO ISS AMBI FWHM START 0.96
HIERARCH ESO ISS AMBI FWHM END 0.96