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AMBER Science Demontration Data

Alf Ara

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Abstract

Alpha Arae (HD 158427)

The observations of alpha Arae were acquired during a Science Demonstration Time (SDT) run, on the nights of 23 and 24 February 2005, using the AMBER instrument on the VLTI in medium-resolution mode (R=1500). On the night of 23 February, the observations were made with two UT telescopes, i.e. one interferometric baseline only, and consist of six exposure files, each containing 500 frames of 100 ms. On the following night, the three telescopes were available and three-baselines data was taken in a serie of three exposure files and another serie of two, each containing 500 frames of 70 ms. Without a fringe tracker, the integration time per frame must be short enough to minimize the smearing of the fringe visibility due to the beams jitter, while still having enough photons over the elementary exposure. Its specific value is chosen depending on the atmospheric conditions. Immediately after observing alpha Arae, a nearby calibrator object was observed (HD165024; HD124454). Note that the data package includes observations of 31 Ori, another calibrator, which however was recorded on the following night: these observations are included here by mistake, and should not be used in the context of Alpha Arae.

Description of the data set:
- Instrument: AMBER
- Configuration: 2 and 3 telescopes, medium resolution centered on Br Gamma line
- DIT: 100ms and 70ms

Table 1: AMBER Science Demonstration Data

PackageDescription
File ListView all files in the package (76)
AMBER01.SD.074.A-9026A AMBER Data (76 files)

Files Description for alfara, and associated calibrators

       File Name                   Target  Science/Calibrator   Category
alfara, object, DIT=100ms, 6 files
AMBER.2005-02-24T08:30:36.617.fits
AMBER.2005-02-24T08:32:25.635.fits
AMBER.2005-02-24T08:34:11.380.fits
AMBER.2005-02-24T08:44:06.234.fits
AMBER.2005-02-24T08:46:02.226.fits
AMBER.2005-02-24T08:47:42.514.fits

alfara, sky, DIT=100ms, 2 files
AMBER.2005-02-24T08:36:25.324.fits
AMBER.2005-02-24T08:49:51.293.fits

alfara, dark, DIT=100ms, 2 files
AMBER.2005-02-24T08:28:43.524.fits
AMBER.2005-02-24T08:42:18.161.fits

hd165024, calibrator, DIT=100ms, 5 files
AMBER.2005-02-24T07:44:25.223.fits
AMBER.2005-02-24T07:47:57.885.fits
AMBER.2005-02-24T07:56:25.530.fits
AMBER.2005-02-24T08:05:08.722.fits
AMBER.2005-02-24T08:06:59.032.fits

hd165024, sky, DIT=100ms, 2 files
AMBER.2005-02-24T07:51:47.499.fits
AMBER.2005-02-24T08:09:01.266.fits

hd165024, dark, DIT=100ms, 2 files
AMBER.2005-02-24T07:57:22.401.fits
AMBER.2005-02-24T08:03:21.383.fits

hd165024, calibration, DIT=150ms, 10 files
AMBER.2005-02-24T07:12:55.990.fits
AMBER.2005-02-24T07:13:35.821.fits
AMBER.2005-02-24T07:13:47.450.fits
AMBER.2005-02-24T07:13:55.798.fits
AMBER.2005-02-24T07:14:34.769.fits
AMBER.2005-02-24T07:14:50.752.fits
AMBER.2005-02-24T07:14:51.752.fits
AMBER.2005-02-24T07:15:04.054.fits
AMBER.2005-02-24T07:15:18.905.fits
AMBER.2005-02-24T07:15:32.004.fits


alfara, object, DIT=70ms, 5 files
AMBER.2005-02-25T09:24:22.488.fits
AMBER.2005-02-25T09:26:02.281.fits
AMBER.2005-02-25T09:27:39.957.fits
AMBER.2005-02-25T09:38:46.349.fits
AMBER.2005-02-25T09:40:23.100.fits

alfara, sky, DIT=70ms, 2 files
AMBER.2005-02-25T09:29:45.946.fits
AMBER.2005-02-25T09:42:17.400.fits

alfara, dark, DIT=70ms, 2 files
AMBER.2005-02-25T09:22:40.696.fits
AMBER.2005-02-25T09:37:14.383.fits

alfara, dark, DIT=100ms, 1 files
AMBER.2005-02-25T09:20:43.945.fits

HD124454, calibrator, DIT=34ms, 6 files
AMBER.2005-02-25T08:30:48.767.fits
AMBER.2005-02-25T08:31:33.707.fits
AMBER.2005-02-25T08:32:19.547.fits
AMBER.2005-02-25T08:36:38.779.fits
AMBER.2005-02-25T08:37:23.252.fits
AMBER.2005-02-25T08:38:08.932.fits

HD124454, sky, DIT=34ms, 2 files
AMBER.2005-02-25T08:33:28.465.fits
AMBER.2005-02-25T08:39:22.120.fits

HD124454, dark, DIT=34ms, 3 files
AMBER.2005-02-25T08:26:34.920.fits
AMBER.2005-02-25T08:30:00.587.fits
AMBER.2005-02-25T08:35:43.534.fits


hd165024, calibrator, DIT=70ms, 6 files
AMBER.2005-02-25T10:04:10.020.fits
AMBER.2005-02-25T10:05:45.944.fits
AMBER.2005-02-25T10:07:19.877.fits
AMBER.2005-02-25T10:13:59.045.fits
AMBER.2005-02-25T10:15:27.491.fits
AMBER.2005-02-25T10:17:03.562.fits

hd165024, sky, DIT=70ms, 2 files
AMBER.2005-02-25T10:09:20.178.fits
AMBER.2005-02-25T10:18:32.740.fits

hd165024, dark, DIT=70ms, 2 files
AMBER.2005-02-25T10:02:35.241.fits
AMBER.2005-02-25T10:12:13.268.fits

31Ori, calibration, DIT=187ms, 16 files
AMBER.2005-02-25T23:37:17.615.fits
AMBER.2005-02-25T23:38:12.360.fits
AMBER.2005-02-25T23:38:28.016.fits
AMBER.2005-02-25T23:38:47.209.fits
AMBER.2005-02-25T23:39:01.018.fits
AMBER.2005-02-25T23:39:46.854.fits
AMBER.2005-02-25T23:40:08.033.fits
AMBER.2005-02-25T23:40:09.034.fits
AMBER.2005-02-25T23:40:26.391.fits
AMBER.2005-02-25T23:40:44.520.fits
AMBER.2005-02-25T23:41:03.340.fits
AMBER.2005-02-25T23:41:21.300.fits
AMBER.2005-02-25T23:41:39.261.fits
AMBER.2005-02-25T23:42:03.163.fits
AMBER.2005-02-25T23:42:21.064.fits
AMBER.2005-02-25T23:42:37.981.fits 

 






      






  

    
      

    		
  

  

    
      

        

          
            
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               Last update: December 6, 2005

          		
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