Exposure
ID
GRAVI.2022-04-26T08:03:56.098_1
Header ID
GRAVI.2022-04-26T08:03:56.098
Date updated
2022-04-26 08:16:02 UTC+0000
Release date
2023-04-26 08:16:02 UTC+0000
UTC Start
2022-04-26 08:03:56.098
UTC End
2022-04-26 08:09:16.098
MJD Start
59695.33606595
MJD End
59695.3397696537
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.003134
Ambient temperature (°C)
10.97
Seeing (arcsec)
2.08
Observation
ID
50602
Category
science
Program ID
109.22ZA.001
Program Title
THE GALACTIC CENTER WITH GRAVITY - PROBING EVENT HORIZON SCALE PHYSICS WITH STARS AND FLARES
Program Type
GTO
PI / COI
EISENHAUER/ GILLESSEN/ GENZEL/ OTT/ STRAUBMEIER/ ROUSSELET-PERRAUT/ BRANDNER/ GARCIA/ ECKART/ DE ZEEUW/ STADLER/ VON FELLENBERG/ WIDMANN/ PERRIN/ PAUMARD/ HORROBIN/ VINCENT/ HEIßEL/ DRESCHER/ BOURDAROT/ STRAUB/ CAO
Target
ID
37791
Name
S2
RA
266.416815
DEC
-29.00698
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
LOW-SPLIT
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 56.4700 56.4380 25.3000 25.9000
U1-U3 102.3100 102.2450 31.6000 32.3000
U1-U4 130.1990 130.1440 59.5950 60.2750
U2-U3 46.6030 46.5730 39.3000 40.0000
U2-U4 89.4160 89.4280 80.4510 81.1460
U3-U4 62.3800 62.4360 109.8950 110.5700
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 109.22ZA.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59695.33606595
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416815
DEC -29.00698
HIERARCH ESO INS SPEC RES LOW
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 U1
HIERARCH ESO ISS CONF STATION2 U2
HIERARCH ESO ISS CONF STATION3 U3
HIERARCH ESO ISS CONF STATION4 U4
EXPTIME 342.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 32
HIERARCH ESO ISS PBL12 START 56.47
HIERARCH ESO ISS PBL12 END 56.438
HIERARCH ESO ISS PBLA12 START 25.3
HIERARCH ESO ISS PBLA12 END 25.9
HIERARCH ESO ISS PBL13 START 102.31
HIERARCH ESO ISS PBL13 END 102.245
HIERARCH ESO ISS PBLA13 START 31.6
HIERARCH ESO ISS PBLA13 END 32.3
HIERARCH ESO ISS PBL14 START 130.199
HIERARCH ESO ISS PBL14 END 130.144
HIERARCH ESO ISS PBLA14 START 59.595
HIERARCH ESO ISS PBLA14 END 60.275
HIERARCH ESO ISS PBL23 START 46.603
HIERARCH ESO ISS PBL23 END 46.573
HIERARCH ESO ISS PBLA23 START 39.3
HIERARCH ESO ISS PBLA23 END 40.0
HIERARCH ESO ISS PBL24 START 89.416
HIERARCH ESO ISS PBL24 END 89.428
HIERARCH ESO ISS PBLA24 START 80.451
HIERARCH ESO ISS PBLA24 END 81.146
HIERARCH ESO ISS PBL34 START 62.38
HIERARCH ESO ISS PBL34 END 62.436
HIERARCH ESO ISS PBLA34 START 109.895
HIERARCH ESO ISS PBLA34 END 110.57
HIERARCH ESO ISS AMBI TAU0 START 0.003134
HIERARCH ESO ISS AMBI TAU0 END 0.003134
HIERARCH ESO ISS AMBI TEMP 10.97
HIERARCH ESO ISS AMBI FWHM START 2.08
HIERARCH ESO ISS AMBI FWHM END 2.08
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5310