Exposure
ID
GRAVI.2025-06-23T07:35:02.259_1
Header ID
GRAVI.2025-06-23T07:35:02.259
Date updated
2025-06-23 07:45:42 UTC+0000
Release date
2026-06-23 07:45:42 UTC+0000
UTC Start
2025-06-23 07:35:02.259
UTC End
2025-06-23 07:37:42.259
MJD Start
60849.31599837
MJD End
60849.31785022186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0044915
Ambient temperature (°C)
9.41
Seeing (arcsec)
0.485
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 55.0690 54.6600 296.9000 297.5000
K0-D0 74.8860 74.2040 271.1000 271.5000
K0-J3 56.2380 56.2330 355.6220 356.0580
G2-D0 34.8830 34.7190 227.7000 227.8000
G2-J3 54.5520 54.2300 55.2140 55.3460
D0-J3 89.2500 88.7640 52.2650 52.3910
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 60849.31599837
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 55.069
HIERARCH ESO ISS PBL12 END 54.66
HIERARCH ESO ISS PBLA12 START 296.9
HIERARCH ESO ISS PBLA12 END 297.5
HIERARCH ESO ISS PBL13 START 74.886
HIERARCH ESO ISS PBL13 END 74.204
HIERARCH ESO ISS PBLA13 START 271.1
HIERARCH ESO ISS PBLA13 END 271.5
HIERARCH ESO ISS PBL14 START 56.238
HIERARCH ESO ISS PBL14 END 56.233
HIERARCH ESO ISS PBLA14 START 355.622
HIERARCH ESO ISS PBLA14 END 356.058
HIERARCH ESO ISS PBL23 START 34.883
HIERARCH ESO ISS PBL23 END 34.719
HIERARCH ESO ISS PBLA23 START 227.7
HIERARCH ESO ISS PBLA23 END 227.8
HIERARCH ESO ISS PBL24 START 54.552
HIERARCH ESO ISS PBL24 END 54.23
HIERARCH ESO ISS PBLA24 START 55.214
HIERARCH ESO ISS PBLA24 END 55.346
HIERARCH ESO ISS PBL34 START 89.25
HIERARCH ESO ISS PBL34 END 88.764
HIERARCH ESO ISS PBLA34 START 52.265
HIERARCH ESO ISS PBLA34 END 52.391
HIERARCH ESO ISS AMBI TAU0 START 0.0046
HIERARCH ESO ISS AMBI TAU0 END 0.004383
HIERARCH ESO ISS AMBI TEMP 9.41
HIERARCH ESO ISS AMBI FWHM START 0.54
HIERARCH ESO ISS AMBI FWHM END 0.43