[Comm2011] Dome lamp shutting off after 10 minutes during Gain?

Mon Aug 8 22:30:26 CEST 2011

Hi John,

Andrea implemented the default lamp keyword, as I had written to you. We 
can discuss again the issue of the individual lamp keywords with Andrea, 
at the time we agreed that this was low priority during OCAM3 since it 
is not lacking information as such. The permanent inclusion of this 
keywords with values either T/F is something I can also ask Paranal 
Software to implement after OCAM3, so no need for Andrea to do this now.

The gain template issue is reaaaally strange, I will include it again in 
tomorrow's calibration.

I first thought that the lamp switches off because there is some 
integration with EXPTIME=0 sec, some bias inbetween. But this should not 
the case according to the below content of the gain template that is 
used for the daily calibrations. Can you confirm that those are the 
integration times that you see in the normal case (the data from August 
3 are not here anymore, so I cannot check)?

# calib template OMEGACAM_img_cal_gain
TPL.ID                   "OMEGACAM_img_cal_gain";
TPL.NAME                 "Use Dome FF to check gain";
TPL.MODE                 "FLAT";
DET1.WIN1.UIT1           "0.2 4.3 4.0 0.3 0.7 3.5 2.7 0.1 1.4 2.1 2.1 
1.4 0.1 2.7 3.5 0.7 0.3 4.0 4.3 0.2";
SEQ.NEXPO                "20";
INS.FILT.NAME            "z_SDSS";
INS.LAMP.SET             "Default";

Cheers,
Steffen

On 08/08/11 15:14, John P. McFarland wrote:
> Hi Ewout,
>
> I have asked Steffen to discuss with Andrea the logic of how the lamp 
> keywords are included.  If the logic is affecting the ingest we need 
> to either adapt or adjust the logic.
>
> Andrea and Steffen, have you come to any resolution concerning the 
> lamp keywords?  It seems to me that removal of the keywords is a poor 
> way to indicate the lamp is off.  I assume that is what the state 
> keyword (e.g., INS.LAMP1.ST) is meant to indicate.  Please tell us of 
> your ideas regarding this.  Thanks!
>
> Cheers,
>
>
> -=John
>
>
> On Mon, 8 Aug 2011, Ewout M. Helmich wrote:
>
>> Hi Bernard,
>>
>> It looks like all the gain templates for OCAM3 taken up to this point
>> are wrong. After about 10 minutes, in the middle of the gain template,
>> the lamp appears to shut down. Lamp header items then disappear, which
>> resulted in errors during ingest here (note to Danny).
>>
>> Also, the first gain template taken during OCAM3 has strange exposure
>> times (see below). The exposure times for the 2nd and 3rd template 
>> are ok.
>>
>> Ewout
>>
>> ---------------------------------------------------------------------
>>
>> # Filename, template.start, template.type, EXPTIME
>>
>> OMEGACAM.2011-08-03T13:22:00.734.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN -0.704
>> OMEGACAM.2011-08-03T13:30:39.989.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN -0.604
>> OMEGACAM.2011-08-03T13:19:06.032.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN -0.504
>> OMEGACAM.2011-08-03T13:27:45.437.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN -0.104
>> OMEGACAM.2011-08-03T13:24:54.515.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 0.596
>> OMEGACAM.2011-08-03T13:25:37.206.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 0.904
>> OMEGACAM.2011-08-03T13:16:51.761.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 1.004
>> OMEGACAM.2011-08-03T13:28:30.448.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 1.104
>> OMEGACAM.2011-08-03T13:23:28.225.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 1.296
>> OMEGACAM.2011-08-03T13:19:50.152.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 1.504
>> OMEGACAM.2011-08-03T13:26:17.436.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 1.896
>> OMEGACAM.2011-08-03T13:22:41.584.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 2.204
>> OMEGACAM.2011-08-03T13:20:30.803.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 2.696
>> OMEGACAM.2011-08-03T13:24:11.945.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 2.904
>> OMEGACAM.2011-08-03T13:29:11.268.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 3.196
>> OMEGACAM.2011-08-03T13:17:32.721.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 3.496
>> OMEGACAM.2011-08-03T13:21:14.223.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 3.504
>> OMEGACAM.2011-08-03T13:27:01.517.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 4.304
>> OMEGACAM.2011-08-03T13:18:20.842.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 4.804
>> OMEGACAM.2011-08-03T13:29:55.428.fits 2011-08-03 13:12:39
>> FLAT,DOME,DETGAIN 5.104
>>
>>
>> awe> q = (RawFitsData.template.start ==
>> dateutil.parser.parse('2011-08-05 15:17:32'))
>> awe> for f in q.order_by('DATE_OBS'): print f.filename,
>> len(RawDomeFlatFrame.raw_fits_data == f)
>> ...
>> OMEGACAM.2011-08-05T15:19:26.683.fits 32
>> OMEGACAM.2011-08-05T15:20:10.644.fits 32
>> OMEGACAM.2011-08-05T15:20:55.594.fits 32
>> OMEGACAM.2011-08-05T15:21:41.954.fits 32
>> OMEGACAM.2011-08-05T15:22:41.965.fits 32
>> OMEGACAM.2011-08-05T15:23:23.495.fits 32
>> OMEGACAM.2011-08-05T15:24:07.366.fits 32
>> OMEGACAM.2011-08-05T15:24:50.316.fits 32
>> OMEGACAM.2011-08-05T15:25:34.247.fits 32
>> OMEGACAM.2011-08-05T15:26:15.407.fits 32
>> OMEGACAM.2011-08-05T15:27:00.868.fits 32
>> OMEGACAM.2011-08-05T15:27:42.958.fits 32
>> OMEGACAM.2011-08-05T15:28:26.899.fits 32
>> OMEGACAM.2011-08-05T15:29:10.329.fits 32
>> OMEGACAM.2011-08-05T15:29:52.919.fits 0
>> OMEGACAM.2011-08-05T15:30:40.200.fits 0
>> OMEGACAM.2011-08-05T15:31:23.560.fits 0
>> OMEGACAM.2011-08-05T15:32:03.781.fits 0
>> OMEGACAM.2011-08-05T15:32:47.751.fits 0
>> OMEGACAM.2011-08-05T15:33:34.692.fits 0
>>
>> awe> q = (RawFitsData.template.start ==
>> dateutil.parser.parse('2011-08-05 13:38:18'))
>> awe> len(q)
>> 20
>> awe> for f in q.order_by('DATE_OBS'): print f.filename,
>> len(RawDomeFlatFrame.raw_fits_data == f)
>> ...
>> OMEGACAM.2011-08-05T13:40:12.904.fits 32
>> OMEGACAM.2011-08-05T13:40:56.774.fits 32
>> OMEGACAM.2011-08-05T13:41:41.684.fits 32
>> OMEGACAM.2011-08-05T13:42:25.385.fits 32
>> OMEGACAM.2011-08-05T13:43:05.425.fits 32
>> OMEGACAM.2011-08-05T13:43:45.766.fits 32
>> OMEGACAM.2011-08-05T13:44:28.766.fits 32
>> OMEGACAM.2011-08-05T13:45:11.576.fits 32
>> OMEGACAM.2011-08-05T13:45:51.587.fits 32
>> OMEGACAM.2011-08-05T13:46:36.537.fits 32
>> OMEGACAM.2011-08-05T13:47:18.658.fits 32
>> OMEGACAM.2011-08-05T13:48:03.278.fits 32
>> OMEGACAM.2011-08-05T13:48:44.649.fits 32
>> OMEGACAM.2011-08-05T13:49:24.999.fits 32
>> OMEGACAM.2011-08-05T13:50:10.539.fits 0
>> OMEGACAM.2011-08-05T13:50:56.480.fits 0
>> OMEGACAM.2011-08-05T13:51:41.590.fits 0
>> OMEGACAM.2011-08-05T13:52:25.761.fits 0
>> OMEGACAM.2011-08-05T13:53:12.371.fits 0
>> OMEGACAM.2011-08-05T13:53:59.232.fits 0
>>
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>>

-- 
Dr. Steffen Mieske
European Southern Observatory
Alonso de Cordova 3107
Vitacura, Santiago
CHILE
Tel.: +56 2 463 3118
Fax: +56 2 463 3001