Exposure
ID
GRAVI.2025-07-24T04:15:34.471_1
Header ID
GRAVI.2025-07-24T04:15:34.471
Date updated
2025-07-24 04:25:53 UTC+0000
Release date
2025-07-24 04:15:34 UTC+0000
UTC Start
2025-07-24 04:15:34.471
UTC End
2025-07-24 04:18:14.471
MJD Start
60880.1774823
MJD End
60880.17933415186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0021785
Ambient temperature (°C)
12.74
Seeing (arcsec)
0.64
Observation
ID
68945
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
51297
Name
HD156227
RA
259.175819
DEC
-6.24502
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 70.3080 69.7250 127.3000 127.7000
A0-J2 103.7010 102.7130 97.9000 98.1000
A0-C1 17.5740 17.4280 127.2830 127.7290
G1-J2 54.6390 54.4150 58.8000 58.8000
G1-C1 52.7350 52.2970 307.2600 307.7060
J2-C1 88.8030 87.9900 272.3630 272.4650
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 60880.1774823
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 156227
HIERARCH ESO INS SOBJ NAME HD156227
RA 259.175819
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 70.308
HIERARCH ESO ISS PBL12 END 69.725
HIERARCH ESO ISS PBLA12 START 127.3
HIERARCH ESO ISS PBLA12 END 127.7
HIERARCH ESO ISS PBL13 START 103.701
HIERARCH ESO ISS PBL13 END 102.713
HIERARCH ESO ISS PBLA13 START 97.9
HIERARCH ESO ISS PBLA13 END 98.1
HIERARCH ESO ISS PBL14 START 17.574
HIERARCH ESO ISS PBL14 END 17.428
HIERARCH ESO ISS PBLA14 START 127.283
HIERARCH ESO ISS PBLA14 END 127.729
HIERARCH ESO ISS PBL23 START 54.639
HIERARCH ESO ISS PBL23 END 54.415
HIERARCH ESO ISS PBLA23 START 58.8
HIERARCH ESO ISS PBLA23 END 58.8
HIERARCH ESO ISS PBL24 START 52.735
HIERARCH ESO ISS PBL24 END 52.297
HIERARCH ESO ISS PBLA24 START 307.26
HIERARCH ESO ISS PBLA24 END 307.706
HIERARCH ESO ISS PBL34 START 88.803
HIERARCH ESO ISS PBL34 END 87.99
HIERARCH ESO ISS PBLA34 START 272.363
HIERARCH ESO ISS PBLA34 END 272.465
HIERARCH ESO ISS AMBI TAU0 START 0.002229
HIERARCH ESO ISS AMBI TAU0 END 0.002128
HIERARCH ESO ISS AMBI TEMP 12.74
HIERARCH ESO ISS AMBI FWHM START 0.65
HIERARCH ESO ISS AMBI FWHM END 0.63