Exposure
ID
GRAVI.2025-06-23T07:41:41.276_1
Header ID
GRAVI.2025-06-23T07:41:41.276
Date updated
2025-06-23 07:50:51 UTC+0000
Release date
2026-06-23 07:50:51 UTC+0000
UTC Start
2025-06-23 07:41:41.276
UTC End
2025-06-23 07:44:21.276
MJD Start
60849.32061662
MJD End
60849.32246847186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.00383
Ambient temperature (°C)
9.5
Seeing (arcsec)
0.43999999999999995
Observation
ID
68175
Category
science
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
50678
Name
W_Sgr
RA
271.255137
DEC
-29.58012
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 54.1530 53.7370 298.3000 298.9000
K0-D0 73.3530 72.6500 272.0000 272.3000
K0-J3 56.2280 56.2240 356.5950 357.0330
G2-D0 34.5130 34.3420 227.9000 228.0000
G2-J3 53.8270 53.4940 55.5030 55.6260
D0-J3 88.1560 87.6520 52.5390 52.6550
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60849.32061662
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME gam01 Sgr
HIERARCH ESO INS SOBJ NAME W_Sgr
RA 271.255137
DEC -29.58012
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 54.153
HIERARCH ESO ISS PBL12 END 53.737
HIERARCH ESO ISS PBLA12 START 298.3
HIERARCH ESO ISS PBLA12 END 298.9
HIERARCH ESO ISS PBL13 START 73.353
HIERARCH ESO ISS PBL13 END 72.65
HIERARCH ESO ISS PBLA13 START 272.0
HIERARCH ESO ISS PBLA13 END 272.3
HIERARCH ESO ISS PBL14 START 56.228
HIERARCH ESO ISS PBL14 END 56.224
HIERARCH ESO ISS PBLA14 START 356.595
HIERARCH ESO ISS PBLA14 END 357.033
HIERARCH ESO ISS PBL23 START 34.513
HIERARCH ESO ISS PBL23 END 34.342
HIERARCH ESO ISS PBLA23 START 227.9
HIERARCH ESO ISS PBLA23 END 228.0
HIERARCH ESO ISS PBL24 START 53.827
HIERARCH ESO ISS PBL24 END 53.494
HIERARCH ESO ISS PBLA24 START 55.503
HIERARCH ESO ISS PBLA24 END 55.626
HIERARCH ESO ISS PBL34 START 88.156
HIERARCH ESO ISS PBL34 END 87.652
HIERARCH ESO ISS PBLA34 START 52.539
HIERARCH ESO ISS PBLA34 END 52.655
HIERARCH ESO ISS AMBI TAU0 START 0.004437
HIERARCH ESO ISS AMBI TAU0 END 0.003223
HIERARCH ESO ISS AMBI TEMP 9.5
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.47