SPIRE Spectrometer Daily Dark Sky Observations

Observations of an area of dark sky are made with the SPIRE Spectrometer for every day it is operating. The number of repetitions in these observations is set to match the longest science observation on that day, although sometimes when two consecutive SPIRE days are observed, the long dark sky observation may be on the day before or after the science observation. The location of the dark sky field is 17h40m12.00s, 69d00'00.00''.

The following table shows the dark sky observations that have been made in the normal observing mode (not the bright source mode). The mean instrument temperature is given for the dark sky observation. The final columns show the range of telescope temperatures over the entire day for the primary (M1) and secondary (M2) mirrors.

These observations are all publically available in the Herschel Science Archive.

OD Num	Date	Start Time	End Time	OBSID	Num Reps	Instrument (SCAL) Temp	Telescope M1 Temp (min-max)	Telescope M2 Temp (min-max)
438	26-07-2010	00:30:10	00:50:36	1342201203 (0x50005D73)	4	4.540	88.024 - 88.026	84.085 - 84.091
423	11-07-2010	00:48:06	01:41:09	1342200178 (0x50005972)	16	4.408	87.919 - 87.943	84.086 - 84.095
368	17-05-2010	02:48:59	03:33:43	1342196611 (0x50004B83)	16	4.728	88.442 - 88.446	84.502 - 84.504
423	11-07-2010	02:23:20	03:07:57	1342200184 (0x50005978)	16	4.433	87.919 - 87.943	84.086 - 84.095
189	19-11-2009	02:26:30	04:39:49	1342187086 (0x5000264E)	50	4.438	0.000 - 0.000	0.000 - 0.000
209	09-12-2009	01:57:24	04:24:44	1342187890 (0x50002972)	50	4.426	87.886 - 87.894	84.158 - 84.161
495	21-09-2010	03:35:30	04:12:40	1342204934 (0x50006C06)	10	4.606	88.790 - 88.824	84.786 - 84.809
466	23-08-2010	04:51:17	06:43:22	1342204035 (0x50006883)	40	4.650	88.504 - 88.507	84.484 - 84.489
572	07-12-2010	05:28:32	06:03:58	1342210863 (0x5000832F)	5	4.719	89.022 - 89.032	84.908 - 84.915
625	29-01-2011	02:16:59	06:54:20	1342213378 (0x50008D02)	105	4.739	89.420 - 89.421	85.192 - 85.199
683	28-03-2011	06:21:30	06:49:06	1342216912 (0x50009AD0)	5	4.802	89.010 - 89.021	84.810 - 84.830
824	16-08-2011	04:28:34	06:53:42	1342227459 (0x5000C403)	45	4.789	88.423 - 88.443	84.339 - 84.349
654	27-02-2011	03:18:15	07:47:52	1342214832 (0x500092B0)	100	4.591	89.111 - 89.117	84.961 - 84.966
571	06-12-2010	05:25:36	09:56:17	1342210850 (0x50008322)	100	4.694	89.000 - 89.010	84.927 - 84.932
601	05-01-2011	04:51:31	09:41:08	1342212320 (0x500088E0)	110	4.700	89.351 - 89.356	85.155 - 85.160
602	06-01-2011	09:26:22	09:51:15	1342212348 (0x500088FC)	5	4.663	89.402 - 89.414	85.196 - 85.212
837	29-08-2011	08:49:31	09:30:56	1342227790 (0x5000C54E)	16	4.740	88.773 - 88.804	84.586 - 84.595
288	26-02-2010	09:42:11	10:38:58	1342191216 (0x50003670)	16	4.820	88.718 - 88.736	84.808 - 84.812
451	08-08-2010	10:36:37	10:54:01	1342202267 (0x5000619B)	4	4.783	88.422 - 88.453	84.457 - 84.466
655	28-02-2011	09:44:55	10:13:00	1342214859 (0x500092CB)	5	4.640	89.173 - 89.198	84.968 - 84.989
767	20-06-2011	09:58:51	10:22:29	1342222873 (0x5000B219)	5	4.662	88.146 - 88.161	84.128 - 84.135
302	12-03-2010	10:54:29	11:13:35	1342192189 (0x50003A3D)	6	4.859	88.756 - 88.761	84.831 - 84.833
410	28-06-2010	11:51:53	12:50:32	1342199255 (0x500055D7)	16	4.694	88.074 - 88.077	84.160 - 84.162
803	26-07-2011	08:38:45	12:20:19	1342224758 (0x5000B976)	80	4.709	88.174 - 88.180	84.072 - 84.076
804	27-07-2011	12:18:37	12:39:10	1342224770 (0x5000B982)	5	4.804	88.218 - 88.225	84.099 - 84.111
836	28-08-2011	08:07:24	12:38:16	1342227521 (0x5000C441)	100	4.727	88.782 - 88.788	84.584 - 84.586
857	18-09-2011	11:46:47	12:09:29	1342228746 (0x5000C90A)	5	4.812	88.968 - 88.986	84.767 - 84.786
240	09-01-2010	11:33:59	13:20:35	1342189120 (0x50002E40)	40	4.897	88.281 - 88.313	84.486 - 84.493
250	19-01-2010	11:27:12	13:39:21	1342189541 (0x50002FE5)	50	5.099	88.582 - 88.589	84.687 - 84.705
261	30-01-2010	10:58:14	13:10:24	1342189892 (0x50003144)	50	4.902	88.745 - 88.774	84.846 - 84.857
404	22-06-2010	13:06:04	13:50:41	1342198928 (0x50005490)	16	4.606	88.185 - 88.196	84.280 - 84.282
428	16-07-2010	12:35:36	13:03:07	1342201496 (0x50005E98)	4	4.770	87.921 - 87.933	84.026 - 84.036
856	17-09-2011	11:03:26	13:46:47	1342228707 (0x5000C8E3)	60	4.812	89.044 - 89.051	84.800 - 84.803
886	17-10-2011	13:03:36	13:33:32	1342231086 (0x5000D22E)	5	4.797	89.095 - 89.114	84.850 - 84.854
227	27-12-2009	13:07:28	14:54:04	1342188673 (0x50002C81)	40	5.016	88.170 - 88.176	84.367 - 84.376
327	06-04-2010	13:16:21	14:00:59	1342193682 (0x50004012)	16	4.714	88.230 - 88.239	84.334 - 84.345
395	13-06-2010	13:15:33	14:00:11	1342198277 (0x50005205)	16	4.920	88.243 - 88.264	84.316 - 84.326
543	08-11-2010	14:00:51	14:55:54	1342208391 (0x50007987)	20	4.773	88.650 - 88.656	84.614 - 84.616
682	27-03-2011	13:09:23	14:54:14	1342216889 (0x50009AB9)	35	4.816	88.984 - 88.987	84.768 - 84.775
885	16-10-2011	10:49:00	14:02:16	1342231052 (0x5000D20C)	70	4.762	89.123 - 89.131	84.835 - 84.838
908	08-11-2011	13:51:19	14:10:32	1342231995 (0x5000D5BB)	5	4.687	89.194 - 89.239	84.883 - 84.914
217	17-12-2009	13:14:36	15:26:58	1342188195 (0x50002AA3)	50	4.917	88.022 - 88.034	84.248 - 84.260
342	21-04-2010	14:56:27	15:41:15	1342195329 (0x50004681)	16	5.093	88.167 - 88.179	84.253 - 84.274
557	22-11-2010	10:31:46	15:20:44	1342209858 (0x50007F42)	110	4.800	89.079 - 89.083	84.969 - 84.970
907	07-11-2011	10:43:10	15:02:26	1342231982 (0x5000D5AE)	100	4.650	89.133 - 89.138	84.866 - 84.868
275	13-02-2010	15:56:45	16:50:02	1342190675 (0x50003453)	16	4.750	88.688 - 88.697	84.775 - 84.784
354	03-05-2010	15:59:16	16:43:56	1342195764 (0x50004834)	16	4.926	88.376 - 88.446	84.505 - 84.529
710	24-04-2011	14:22:09	18:47:01	1342219556 (0x5000A524)	100	4.716	88.582 - 88.587	84.420 - 84.428
317	27-03-2010	18:56:06	19:52:25	1342192838 (0x50003CC6)	16	4.730	88.424 - 88.448	84.579 - 84.591
626	29-01-2011	19:51:06	20:23:25	1342213446 (0x50008D46)	5	4.766	89.438 - 89.448	85.216 - 85.228
741	25-05-2011	19:03:29	20:15:35	1342221688 (0x5000AD78)	25	4.577	88.524 - 88.710	80.197 - 84.351
383	31-05-2010	19:05:57	21:20:32	1342197456 (0x50004ED0)	50	4.837	88.184 - 88.195	84.284 - 84.289
711	25-04-2011	22:36:26	22:58:20	1342219576 (0x5000A538)	5	4.740	88.638 - 88.640	84.468 - 84.490
742	26-05-2011	21:57:31	22:15:26	1342221717 (0x5000AD95)	5	4.608	88.559 - 88.590	84.401 - 84.425
879	09-10-2011	20:38:12	23:10:55	1342230416 (0x5000CF90)	55	4.881	88.973 - 88.980	84.735 - 84.737