Exposure
- ID
- GRAVI.2022-04-22T00:21:00.226_1
- Header ID
- GRAVI.2022-04-22T00:21:00.226
- Date updated
- 2022-04-22 00:35:36 UTC+0000
- Release date
- 2022-04-22 00:21:00 UTC+0000
- UTC Start
- 2022-04-22 00:21:00.226
- UTC End
- 2022-04-22 00:27:00.226
- MJD Start
- 59691.01458595
- MJD End
- 59691.0187526167
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002782
- Ambient temperature (°C)
- 10.31
- Seeing (arcsec)
- 1.015
Observation
- ID
- 50505
- Category
- calibrator
- Program ID
- 109.23KQ.001
- Program Title
- FEASIBILITY STUDY OF RESOLVING THE NUCLEAR REGIONS OF EHT TARGETS
- Program Type
- Normal
- PI / COI
- RAMAKRISHNAN/ TRISTRAM
Target
- ID
- 37745
- Name
- HD_110171
- RA
- 190.088033
- DEC
- -12.43462
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 52.2240 | 52.2540 | 2.5000 | 3.5000 |
| U1-U3 | 91.6600 | 91.8410 | 8.0000 | 9.1000 |
| U1-U4 | 99.1400 | 100.5280 | 37.4510 | 38.8100 |
| U2-U3 | 39.9840 | 40.1590 | 15.1000 | 16.4000 |
| U2-U4 | 63.7700 | 65.2900 | 65.4180 | 66.3660 |
| U3-U4 | 49.0530 | 50.0450 | 104.2490 | 104.3010 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 109.23KQ.001 |
| HIERARCH ESO DPR CATG | CALIB |
| HIERARCH ESO DPR TYPE | STD,SINGLE |
| MJD-OBS | 59691.01458595 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 110171 |
| HIERARCH ESO INS SOBJ NAME | HD_110171 |
| RA | 190.088033 |
| DEC | -12.43462 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | COMBINED |
| 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 | 376.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 52.224 |
| HIERARCH ESO ISS PBL12 END | 52.254 |
| HIERARCH ESO ISS PBLA12 START | 2.5 |
| HIERARCH ESO ISS PBLA12 END | 3.5 |
| HIERARCH ESO ISS PBL13 START | 91.66 |
| HIERARCH ESO ISS PBL13 END | 91.841 |
| HIERARCH ESO ISS PBLA13 START | 8.0 |
| HIERARCH ESO ISS PBLA13 END | 9.1 |
| HIERARCH ESO ISS PBL14 START | 99.14 |
| HIERARCH ESO ISS PBL14 END | 100.528 |
| HIERARCH ESO ISS PBLA14 START | 37.451 |
| HIERARCH ESO ISS PBLA14 END | 38.81 |
| HIERARCH ESO ISS PBL23 START | 39.984 |
| HIERARCH ESO ISS PBL23 END | 40.159 |
| HIERARCH ESO ISS PBLA23 START | 15.1 |
| HIERARCH ESO ISS PBLA23 END | 16.4 |
| HIERARCH ESO ISS PBL24 START | 63.77 |
| HIERARCH ESO ISS PBL24 END | 65.29 |
| HIERARCH ESO ISS PBLA24 START | 65.418 |
| HIERARCH ESO ISS PBLA24 END | 66.366 |
| HIERARCH ESO ISS PBL34 START | 49.053 |
| HIERARCH ESO ISS PBL34 END | 50.045 |
| HIERARCH ESO ISS PBLA34 START | 104.249 |
| HIERARCH ESO ISS PBLA34 END | 104.301 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002529 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003035 |
| HIERARCH ESO ISS AMBI TEMP | 10.31 |
| HIERARCH ESO ISS AMBI FWHM START | 1.01 |
| HIERARCH ESO ISS AMBI FWHM END | 1.02 |