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

Steffen Mieske smieske at eso.org
Wed Aug 10 11:30:50 CEST 2011 

Hi Ewout,

the 1hr limit was still in place this morning, so you will see some of 
the V-band domeflats with 0.2s integration without the lamp. But it will 
be fixed very soon.

Cheers,
Steffen

On 08/10/11 05:18, Ewout M. Helmich wrote:
> Hi Steffen,
>
> Just to confirm: the 2 gain sequences where the lamp shut off are 
> after a long sequence of dome flats in u, g, r, i, z and composite, 
> with no dark in between. Indeed, the 1 hr. mark is in the middle of 
> both gain templates.
>
> Ewout
>
> On 08/09/2011 06:16 AM, Steffen Mieske wrote:
>> Hi John,
>>
>> the reason for the strange exposure times was a 1 day 'glitch' in the 
>> FIERA software, which occured presumably due to a non 100% clean 
>> installation of a new FIERA software version. In particular, it is 
>> due to a wrong sign in the time recorded for the Shutter 
>> Opening/Closing. As a matter of fact, you will notice that all images 
>> taken between roughly 20:00 UT on August 2 and 3 have the exposure 
>> times wrong by +-0.804 s, which is the time of the shutter motion.
>>
>> As of August 4 the situation is stable, due to a clean restart of the 
>> software.
>>
>> Regarding the lamp switch off: this would up to today have happened 
>> every time that the lamp is in operation for more than one hour. 
>> There is an automatic time-out of 1hr, which is only reset when the 
>> lamp is switched on for the first time, but not if you take a 
>> sequence of flat images. Having said this, in normal daytime 
>> calibrations it should not have occured anyway, since the automatic 
>> calibrations would do a 1.5hr dark before the gain. It may be that 
>> the calibration OB was edited by hand on that day, omiting the darks, 
>> and resulting in a very long sequence of dome flats + gain, > 1h.
>>
>> Andrea has increased the timeout to 3 hrs, so I think we are fine.
>>
>> Cheers,
>> Steffen
>>
>>
>>
>> On 08/08/11 18:23, John P. McFarland wrote:
>>> Hi Steffen,
>>>
>>> The keyword treatment can wait unless the ingest problems can't be 
>>> fixed (highly unlikely that they can't).
>>>
>>> The integration times for 3 out of the last 5 gain templates have 
>>> those exact time sequences.  The exceptions are on the 3rd of August 
>>> as Ewout reported and the one for 1st July where the times look 
>>> good, just much longer (1-60 seconds).
>>>
>>> Cheers,
>>>
>>>
>>> -=John
>>>
>>>
>>> On Mon, 8 Aug 2011, Steffen Mieske wrote:
>>>
>>>> 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
>>>>>>
>>>>>> _______________________________________________
>>>>>> Comm2011 mailing list
>>>>>> Comm2011 at astro-wise.org
>>>>>> http://listman.astro-wise.org/mailman/listinfo/comm2011
>>>>>>
>>>>>>
>>>>
>>>>
>>>> -- 
>>>> Dr. Steffen Mieske
>>>> European Southern Observatory
>>>> Alonso de Cordova 3107
>>>> Vitacura, Santiago
>>>> CHILE
>>>> Tel.: +56 2 463 3118
>>>> Fax: +56 2 463 3001
>>>>
>>>>
>>
>>


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

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