Exposure
ID
GRAVI.2025-06-22T05:51:49.329_1
Header ID
GRAVI.2025-06-22T05:51:49.329
Date updated
2025-06-22 06:00:49 UTC+0000
Release date
2026-06-22 06:00:49 UTC+0000
UTC Start
2025-06-22 05:51:49.329
UTC End
2025-06-22 05:54:29.329
MJD Start
60848.24432094
MJD End
60848.246172791856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002483
Ambient temperature (°C)
11.81
Seeing (arcsec)
0.5549999999999999
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 66.2670 66.0780 280.0000 280.4000
K0-D0 92.4860 92.1980 258.7000 259.1000
K0-J3 56.5490 56.5440 340.6740 341.0570
G2-D0 38.9810 38.9150 220.7000 221.0000
G2-J3 62.6280 62.4960 48.0170 48.2760
D0-J3 101.4150 101.2170 45.2250 45.4820
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 60848.24432094
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 66.267
HIERARCH ESO ISS PBL12 END 66.078
HIERARCH ESO ISS PBLA12 START 280.0
HIERARCH ESO ISS PBLA12 END 280.4
HIERARCH ESO ISS PBL13 START 92.486
HIERARCH ESO ISS PBL13 END 92.198
HIERARCH ESO ISS PBLA13 START 258.7
HIERARCH ESO ISS PBLA13 END 259.1
HIERARCH ESO ISS PBL14 START 56.549
HIERARCH ESO ISS PBL14 END 56.544
HIERARCH ESO ISS PBLA14 START 340.674
HIERARCH ESO ISS PBLA14 END 341.057
HIERARCH ESO ISS PBL23 START 38.981
HIERARCH ESO ISS PBL23 END 38.915
HIERARCH ESO ISS PBLA23 START 220.7
HIERARCH ESO ISS PBLA23 END 221.0
HIERARCH ESO ISS PBL24 START 62.628
HIERARCH ESO ISS PBL24 END 62.496
HIERARCH ESO ISS PBLA24 START 48.017
HIERARCH ESO ISS PBLA24 END 48.276
HIERARCH ESO ISS PBL34 START 101.415
HIERARCH ESO ISS PBL34 END 101.217
HIERARCH ESO ISS PBLA34 START 45.225
HIERARCH ESO ISS PBLA34 END 45.482
HIERARCH ESO ISS AMBI TAU0 START 0.002498
HIERARCH ESO ISS AMBI TAU0 END 0.002468
HIERARCH ESO ISS AMBI TEMP 11.81
HIERARCH ESO ISS AMBI FWHM START 0.48
HIERARCH ESO ISS AMBI FWHM END 0.63