Exposure
ID
GRAVI.2025-05-23T08:35:31.237_1
Header ID
GRAVI.2025-05-23T08:35:31.237
Date updated
2025-05-23 08:45:54 UTC+0000
Release date
2025-05-23 08:35:31 UTC+0000
UTC Start
2025-05-23 08:35:31.237
UTC End
2025-05-23 08:38:11.237
MJD Start
60818.35800043
MJD End
60818.35985228186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0051565
Ambient temperature (°C)
13.29
Seeing (arcsec)
0.44
Observation
ID
67547
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
50237
Name
HD156227
RA
259.178058
DEC
-6.24502
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 52.1220 51.5560 277.3000 277.4000
K0-D0 81.0460 80.4080 253.6000 253.5000
K0-J3 49.4580 49.4160 352.8550 353.3420
G2-D0 39.3340 39.2710 221.5000 221.4000
G2-J3 62.2900 62.1310 47.0010 46.9450
D0-J3 101.5120 101.2910 44.8580 44.8150
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 60818.35800043
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 156227
HIERARCH ESO INS SOBJ NAME HD156227
RA 259.178058
DEC -6.24502
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 52.122
HIERARCH ESO ISS PBL12 END 51.556
HIERARCH ESO ISS PBLA12 START 277.3
HIERARCH ESO ISS PBLA12 END 277.4
HIERARCH ESO ISS PBL13 START 81.046
HIERARCH ESO ISS PBL13 END 80.408
HIERARCH ESO ISS PBLA13 START 253.6
HIERARCH ESO ISS PBLA13 END 253.5
HIERARCH ESO ISS PBL14 START 49.458
HIERARCH ESO ISS PBL14 END 49.416
HIERARCH ESO ISS PBLA14 START 352.855
HIERARCH ESO ISS PBLA14 END 353.342
HIERARCH ESO ISS PBL23 START 39.334
HIERARCH ESO ISS PBL23 END 39.271
HIERARCH ESO ISS PBLA23 START 221.5
HIERARCH ESO ISS PBLA23 END 221.4
HIERARCH ESO ISS PBL24 START 62.29
HIERARCH ESO ISS PBL24 END 62.131
HIERARCH ESO ISS PBLA24 START 47.001
HIERARCH ESO ISS PBLA24 END 46.945
HIERARCH ESO ISS PBL34 START 101.512
HIERARCH ESO ISS PBL34 END 101.291
HIERARCH ESO ISS PBLA34 START 44.858
HIERARCH ESO ISS PBLA34 END 44.815
HIERARCH ESO ISS AMBI TAU0 START 0.005984
HIERARCH ESO ISS AMBI TAU0 END 0.004329
HIERARCH ESO ISS AMBI TEMP 13.29
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.45