Sky transparency — night of 14–15 June 2026

No cloud onset detected. The transparency index held at 100 (IQR 93–100) across 19 light frames.

Transparency index

100 · IQR 93–100

Light frames

Autofocus runs

Failures

25 · solve + PHD2

Normalised transparency index, by filter

100 = that target and filter's own clear‑sky median (this night's own pre-cloud median). Shaded columns are autofocus runs; the first target is named at the top left and dashed vertical rules mark each target change; ticks along the base are errors.

H α O III S II ▲ Plate solve failed ◆ PHD2 error

All‑sky background brightness

Mean luminance of the upper sky per all‑sky still — independent of anything N.I.N.A. recorded. The camera auto‑exposes, so this is an instrumental number, not photometry.

Clear‑sky reference medians

The divisors behind the index — median detected stars per light sub.

Target	Filter	Median stars	Frames
IC 4604	H	332	3
IC 4604	O	174	5
IC 4604	S	500	1
NGC 6523	H	123	4
NGC 6523	O	259	4
NGC 6523	S	812	2

Event timeline

All observatory events with their attributed causes.

18:25:18AF failedautofocus run started 18:23:05 did not completeunexplained

18:25:46solve failedASTAP plate solve failedunexplained

18:26:26solve failedASTAP plate solve failedunexplained

18:36:19AF failedautofocus run started 18:33:06 did not completeunexplained

18:37:25solve failedASTAP plate solve failedunexplained

18:37:35solve failedASTAP plate solve failedunexplained

18:39:59solve failedASTAP plate solve failedunexplained

18:40:11solve failedASTAP plate solve failedunexplained

18:42:21solve failedASTAP plate solve failedunexplained

18:42:47solve failedASTAP plate solve failedunexplained

18:46:39PHD2failed to find a suitable guide starunexplained

18:53:42PHD2timed-out waiting for guider to settleunexplained

18:59:25PHD2timed-out waiting for guider to settleunexplained

19:00:22AF failedautofocus run started 18:59:26 did not completeunexplained

19:01:32PHD2timed-out waiting for guider to settleunexplained

19:07:09PHD2timed-out waiting for guider to settleunexplained

19:10:16AF failedautofocus run started 19:07:10 did not completeunexplained

19:11:35PHD2timed-out waiting for guider to settleunexplained

19:17:26AF failedautofocus run started 19:16:28 did not completeunexplained

19:18:41AF failedautofocus run started 19:18:31 did not completeunexplained

19:18:54PHD2timed-out waiting for guider to settleunexplained

19:23:01AF rejectednew focus point HFR 18.00902759159021 significantly worse than originalunexplained

19:23:01AF failedautofocus run started 19:20:34 did not completeunexplained

19:28:03AF failedautofocus run started 19:26:02 did not completeunexplained

19:38:53AF failedautofocus run started 19:37:04 did not completeunexplained

20:00:33solve failedASTAP plate solve failedunexplained

20:00:41solve failedASTAP plate solve failedunexplained

20:02:48solve failedASTAP plate solve failedunexplained

20:02:56solve failedASTAP plate solve failedunexplained

20:05:04solve failedASTAP plate solve failedunexplained

20:05:12solve failedASTAP plate solve failedunexplained

20:07:19solve failedASTAP plate solve failedunexplained

20:07:28solve failedASTAP plate solve failedunexplained

20:27:01AF rejectednew focus point HFR 3.5372843535315046 significantly worse than originalunexplained

20:27:01AF failedautofocus run started 20:25:08 did not completeunexplained

20:48:15AF rejectednew focus point HFR 4.4577255144607415 significantly worse than originalunexplained

20:48:15AF failedautofocus run started 20:46:19 did not completeunexplained

21:08:07AF rejectednew focus point HFR 6.493862925608574 significantly worse than originalunexplained

21:08:07AF failedautofocus run started 21:06:02 did not completeunexplained

21:14:52PHD2timed-out waiting for guider to settleunexplained

21:22:05AF rejectednew focus point HFR 4.9855523069325365 significantly worse than originalunexplained

21:22:05AF failedautofocus run started 21:20:05 did not completeunexplained

21:29:53AF rejectednew focus point HFR 7.01845019706985 significantly worse than originalunexplained

21:29:53AF failedautofocus run started 21:27:58 did not completeunexplained

21:35:05AF rejectednew focus point HFR 4.056775616496485 significantly worse than originalunexplained

21:35:05AF failedautofocus run started 21:32:53 did not completeunexplained

21:38:27AF rejectednew focus point HFR 5.719124267865658 significantly worse than originalunexplained

21:38:27AF failedautofocus run started 21:36:33 did not completeunexplained

21:48:45PHD2Guiding stoppedpost_slew

22:00:59AF rejectednew focus point HFR 3.621307232241104 significantly worse than originalunexplained

22:00:59AF failedautofocus run started 21:59:07 did not completeunexplained

07:24:39flats failedflat auto-exposure search never convergedunexplained

All 245 frames

Time	Class	Target	Filter	Exp	Stars	HFR	Index
18:23:18	other	IC 4604	H	4s	36	3.61	—
18:23:33	other	IC 4604	H	4s	2	5.25	—
18:23:53	other	IC 4604	H	4s	2	17.25	—
18:24:05	other	IC 4604	H	4s	4	15.85	—
18:24:18	other	IC 4604	H	4s	42	3.05	—
18:24:30	other	IC 4604	H	4s	3	17.50	—
18:25:06	other	IC 4604	H	4s	4	2.39	—
18:33:15	other	IC 4604	H	4s	45	3.06	—
18:33:40	other	IC 4604	H	4s	2	2.55	—
18:33:50	other	IC 4604	H	4s	3	4.63	—
18:34:02	other	IC 4604	H	4s	3	18.18	—
18:34:14	other	IC 4604	H	4s	46	3.06	—
18:34:26	other	IC 4604	H	4s	3	16.19	—
18:34:52	other	IC 4604	H	4s	3	3.48	—
18:35:34	other	IC 4604	H	4s	5	3.83	—
18:35:52	other	IC 4604	H	4s	8	3.02	—
18:36:06	other	IC 4604	H	4s	12	2.89	—
18:36:18	other	IC 4604	H	4s	12	2.53	—
18:58:47	light	IC 4604	H	300s	381	3.66	115%
18:59:35	other	IC 4604	H	4s	25	3.99	—
19:06:31	light	IC 4604	H	300s	332	4.05	100%
19:07:18	other	IC 4604	H	4s	26	4.02	—
19:07:34	other	IC 4604	H	4s	2	3.02	—
19:07:44	other	IC 4604	H	4s	2	2.62	—
19:08:04	other	IC 4604	H	4s	3	20.85	—
19:08:16	other	IC 4604	H	4s	23	4.29	—
19:08:28	other	IC 4604	H	4s	4	12.88	—
19:08:52	other	IC 4604	H	4s	5	4.18	—
19:09:30	other	IC 4604	H	4s	5	3.09	—
19:09:46	other	IC 4604	H	4s	3	3.97	—
19:10:02	other	IC 4604	H	4s	13	2.90	—
19:10:16	other	IC 4604	H	4s	10	2.74	—
19:16:30	light	IC 4604	H	300s	133	6.80	40%
19:16:41	other	IC 4604	H	4s	10	7.61	—
19:18:39	other	IC 4604	H	4s	9	8.20	—
19:19:10	centering	IC 4604	L	3s	71	5.36	—
19:19:52	centering	IC 4604	L	3s	73	4.89	—
19:20:25	centering	IC 4604	L	3s	86	4.53	—
19:20:38	centering	IC 4604	L	1s	57	5.17	—
19:20:51	centering	IC 4604	L	1s	4	3.94	—
19:21:07	centering	IC 4604	L	1s	2	21.31	—
19:21:15	centering	IC 4604	L	1s	7	3.30	—
19:21:25	centering	IC 4604	L	1s	51	5.47	—
19:21:35	centering	IC 4604	L	1s	15	6.92	—
19:21:45	centering	IC 4604	L	1s	4	27.60	—
19:21:55	centering	IC 4604	L	1s	3	4.80	—
19:22:13	centering	IC 4604	L	1s	9	3.86	—
19:22:25	centering	IC 4604	L	1s	6	4.32	—
19:22:37	centering	IC 4604	L	1s	5	3.02	—
19:22:47	centering	IC 4604	L	1s	8	2.84	—
19:23:01	centering	IC 4604	L	1s	5	18.01	—
19:26:07	centering	IC 4604	L	1s	21	8.46	—
19:26:19	centering	IC 4604	L	1s	3	2.47	—
19:26:35	centering	IC 4604	L	1s	4	3.63	—
19:26:43	centering	IC 4604	L	1s	4	25.97	—
19:26:53	centering	IC 4604	L	1s	16	9.07	—
19:27:03	centering	IC 4604	L	1s	66	3.60	—
19:27:13	centering	IC 4604	L	1s	10	3.48	—
19:27:31	centering	IC 4604	L	1s	2	11.69	—
19:27:43	centering	IC 4604	L	1s	6	3.03	—
19:27:53	centering	IC 4604	L	1s	5	2.78	—
19:28:03	centering	IC 4604	L	1s	7	3.44	—
19:37:09	centering	IC 4604	L	1s	7	13.52	—
19:37:19	centering	IC 4604	L	1s	4	2.89	—
19:37:27	centering	IC 4604	L	1s	2	25.67	—
19:37:35	centering	IC 4604	L	1s	3	25.80	—
19:37:43	centering	IC 4604	L	1s	21	8.35	—
19:37:53	centering	IC 4604	L	1s	44	5.29	—
19:38:03	centering	IC 4604	L	1s	4	25.94	—
19:38:17	centering	IC 4604	L	1s	2	2.86	—
19:38:27	centering	IC 4604	L	1s	5	3.81	—
19:38:37	centering	IC 4604	L	1s	6	3.35	—
19:38:45	centering	IC 4604	L	1s	10	2.89	—
19:38:53	centering	IC 4604	L	1s	6	3.02	—
19:39:25	centering	IC 4604	L	3s	94	3.86	—
19:40:25	autofocus	IC 4604	L	1s	84	3.94	—
19:40:33	autofocus	IC 4604	L	1s	6	11.65	—
19:40:39	autofocus	IC 4604	L	1s	7	11.76	—
19:40:45	autofocus	IC 4604	L	1s	7	11.37	—
19:40:51	autofocus	IC 4604	L	1s	8	11.28	—
19:41:01	autofocus	IC 4604	L	1s	9	10.02	—
19:41:11	autofocus	IC 4604	L	1s	36	6.00	—
19:41:21	autofocus	IC 4604	L	1s	52	5.82	—
19:41:31	autofocus	IC 4604	L	1s	83	4.46	—
19:41:41	autofocus	IC 4604	L	1s	105	3.30	—
19:41:51	autofocus	IC 4604	L	1s	142	2.93	—
19:42:01	autofocus	IC 4604	L	1s	152	2.92	—
19:42:11	autofocus	IC 4604	L	1s	146	2.95	—
19:42:21	autofocus	IC 4604	L	1s	139	2.96	—
19:42:31	autofocus	IC 4604	L	1s	76	3.42	—
19:42:41	autofocus	IC 4604	L	1s	64	3.70	—
19:42:51	autofocus	IC 4604	L	1s	65	3.82	—
19:43:28	autofocus	IC 4604	L	1s	66	3.40	—
19:43:35	autofocus	IC 4604	L	1s	111	3.19	—
19:43:41	autofocus	IC 4604	L	1s	114	3.28	—
19:43:47	autofocus	IC 4604	L	1s	126	3.11	—
19:43:53	autofocus	IC 4604	L	1s	157	2.86	—
19:44:01	autofocus	IC 4604	L	1s	144	2.95	—
19:44:09	autofocus	IC 4604	L	1s	123	3.12	—
19:44:17	autofocus	IC 4604	L	1s	72	4.16	—
19:44:26	autofocus	IC 4604	L	1s	50	4.92	—
19:44:35	autofocus	IC 4604	L	1s	16	9.30	—
19:44:45	autofocus	IC 4604	L	1s	10	11.16	—
19:44:55	autofocus	IC 4604	L	1s	77	3.93	—
19:45:05	autofocus	IC 4604	L	1s	138	3.00	—
19:50:15	light	IC 4604	O	300s	622	2.99	357%
19:55:18	light	IC 4604	O	300s	174	2.98	100%
20:00:20	light	IC 4604	O	300s	177	3.02	102%
20:25:15	other	IC 4604	H	4s	49	2.78	—
20:25:29	other	IC 4604	H	4s	13	5.73	—
20:25:39	other	IC 4604	H	4s	17	5.46	—
20:25:47	other	IC 4604	H	4s	20	5.13	—
20:25:57	other	IC 4604	H	4s	29	3.66	—
20:26:07	other	IC 4604	H	4s	52	2.87	—
20:26:17	other	IC 4604	H	4s	43	3.21	—
20:26:27	other	IC 4604	H	4s	34	3.58	—
20:26:37	other	IC 4604	H	4s	19	4.49	—
20:26:47	other	IC 4604	H	4s	13	4.58	—
20:27:01	other	IC 4604	H	4s	35	3.54	—
20:33:24	light	IC 4604	O	300s	100	3.90	57%
20:38:25	light	IC 4604	O	300s	14	7.91	8%
20:43:28	light	IC 4604	S	300s	500	3.83	100%
20:46:28	other	NGC 6523	H	4s	152	3.20	—
20:46:41	other	NGC 6523	H	4s	70	5.82	—
20:46:51	other	NGC 6523	H	4s	73	5.32	—
20:47:01	other	NGC 6523	H	4s	78	5.35	—
20:47:11	other	NGC 6523	H	4s	110	3.74	—
20:47:21	other	NGC 6523	H	4s	163	2.89	—
20:47:31	other	NGC 6523	H	4s	183	2.87	—
20:47:41	other	NGC 6523	H	4s	136	3.55	—
20:47:51	other	NGC 6523	H	4s	97	4.21	—
20:48:01	other	NGC 6523	H	4s	44	8.43	—
20:48:15	other	NGC 6523	H	4s	86	4.46	—
20:55:27	light	NGC 6523	H	300s	119	3.34	97%
21:00:41	light	NGC 6523	H	300s	123	3.26	100%
21:05:52	light	NGC 6523	H	300s	120	3.31	98%
21:06:10	other	NGC 6523	H	4s	154	3.18	—
21:06:23	other	NGC 6523	H	4s	67	5.61	—
21:06:33	other	NGC 6523	H	4s	73	5.23	—
21:06:43	other	NGC 6523	H	4s	84	4.66	—
21:06:53	other	NGC 6523	H	4s	113	3.74	—
21:07:03	other	NGC 6523	H	4s	155	3.17	—
21:07:13	other	NGC 6523	H	4s	174	2.89	—
21:07:23	other	NGC 6523	H	4s	144	3.15	—
21:07:33	other	NGC 6523	H	4s	105	3.91	—
21:07:43	other	NGC 6523	H	4s	51	7.78	—
21:07:53	other	NGC 6523	H	4s	30	10.18	—
21:08:07	other	NGC 6523	H	4s	66	6.49	—
21:13:51	light	NGC 6523	H	300s	123	3.19	100%
21:19:55	light	NGC 6523	O	300s	259	3.58	100%
21:20:13	other	NGC 6523	O	4s	219	3.31	—
21:20:27	other	NGC 6523	O	4s	180	4.02	—
21:20:37	other	NGC 6523	O	4s	176	4.12	—
21:20:47	other	NGC 6523	O	4s	192	3.90	—
21:20:57	other	NGC 6523	O	4s	245	3.13	—
21:21:09	other	NGC 6523	O	4s	297	2.87	—
21:21:19	other	NGC 6523	O	4s	258	3.01	—
21:21:29	other	NGC 6523	O	4s	184	3.83	—
21:21:39	other	NGC 6523	O	4s	122	5.12	—
21:21:49	other	NGC 6523	O	4s	56	10.17	—
21:22:05	other	NGC 6523	O	4s	121	4.99	—
21:27:49	light	NGC 6523	O	300s	261	3.58	101%
21:28:06	other	NGC 6523	O	4s	223	3.29	—
21:28:19	other	NGC 6523	O	4s	217	3.81	—
21:28:29	other	NGC 6523	O	4s	215	3.60	—
21:28:39	other	NGC 6523	O	4s	225	3.61	—
21:28:49	other	NGC 6523	O	4s	279	2.94	—
21:28:59	other	NGC 6523	O	4s	311	2.79	—
21:29:09	other	NGC 6523	O	4s	278	3.03	—
21:29:19	other	NGC 6523	O	4s	206	3.44	—
21:29:29	other	NGC 6523	O	4s	168	4.05	—
21:29:39	other	NGC 6523	O	4s	80	8.12	—
21:29:53	other	NGC 6523	O	4s	102	7.02	—
21:33:02	other	NGC 6523	O	4s	233	3.23	—
21:33:11	other	NGC 6523	O	4s	218	3.48	—
21:33:23	other	NGC 6523	O	4s	230	3.31	—
21:33:35	other	NGC 6523	O	4s	235	3.56	—
21:33:47	other	NGC 6523	O	4s	267	3.22	—
21:34:01	other	NGC 6523	O	4s	304	2.97	—
21:34:15	other	NGC 6523	O	4s	267	3.22	—
21:34:29	other	NGC 6523	O	4s	179	3.95	—
21:34:41	other	NGC 6523	O	4s	153	4.32	—
21:34:53	other	NGC 6523	O	4s	96	7.24	—
21:35:05	other	NGC 6523	O	4s	155	4.06	—
21:36:41	other	NGC 6523	O	4s	195	3.86	—
21:36:51	other	NGC 6523	O	4s	131	5.26	—
21:37:01	other	NGC 6523	O	4s	128	5.77	—
21:37:11	other	NGC 6523	O	4s	154	4.80	—
21:37:21	other	NGC 6523	O	4s	232	3.41	—
21:37:31	other	NGC 6523	O	4s	313	2.90	—
21:37:43	other	NGC 6523	O	4s	285	2.98	—
21:37:53	other	NGC 6523	O	4s	173	3.74	—
21:38:05	other	NGC 6523	O	4s	91	7.57	—
21:38:15	other	NGC 6523	O	4s	55	10.80	—
21:38:27	other	NGC 6523	O	4s	119	5.72	—
21:41:01	autofocus	NGC 6523	O	4s	229	3.35	—
21:41:11	autofocus	NGC 6523	O	4s	97	6.50	—
21:41:19	autofocus	NGC 6523	O	4s	119	6.14	—
21:41:29	autofocus	NGC 6523	O	4s	175	4.37	—
21:41:39	autofocus	NGC 6523	O	4s	252	3.25	—
21:41:49	autofocus	NGC 6523	O	4s	313	2.94	—
21:41:59	autofocus	NGC 6523	O	4s	272	2.93	—
21:42:09	autofocus	NGC 6523	O	4s	183	3.78	—
21:42:19	autofocus	NGC 6523	O	4s	73	8.19	—
21:42:31	autofocus	NGC 6523	O	4s	38	11.85	—
21:42:43	autofocus	NGC 6523	O	4s	158	3.41	—
21:48:19	light	NGC 6523	O	300s	171	5.28	66%
21:48:53	autofocus	NGC 6523	O	4s	143	4.55	—
21:48:58	autofocus	NGC 6523	O	4s	141	5.12	—
21:49:09	autofocus	NGC 6523	O	4s	218	3.54	—
21:49:14	autofocus	NGC 6523	O	4s	235	3.39	—
21:49:23	autofocus	NGC 6523	O	4s	211	3.46	—
21:49:28	autofocus	NGC 6523	O	4s	238	3.49	—
21:49:37	autofocus	NGC 6523	O	4s	227	3.46	—
21:49:42	autofocus	NGC 6523	O	4s	245	3.48	—
21:49:51	autofocus	NGC 6523	O	4s	297	3.11	—
21:49:57	autofocus	NGC 6523	O	4s	302	3.05	—
21:50:07	autofocus	NGC 6523	O	4s	248	3.55	—
21:50:13	autofocus	NGC 6523	O	4s	257	3.42	—
21:50:23	autofocus	NGC 6523	O	4s	168	4.20	—
21:50:28	autofocus	NGC 6523	O	4s	180	4.06	—
21:50:39	autofocus	NGC 6523	O	4s	100	7.11	—
21:50:44	autofocus	NGC 6523	O	4s	93	7.35	—
21:50:55	autofocus	NGC 6523	O	4s	63	9.83	—
21:51:01	autofocus	NGC 6523	O	4s	58	9.48	—
21:51:11	autofocus	NGC 6523	O	4s	35	12.46	—
21:51:16	autofocus	NGC 6523	O	4s	35	12.60	—
21:51:29	autofocus	NGC 6523	O	4s	154	4.55	—
21:51:34	autofocus	NGC 6523	O	4s	152	4.61	—
21:51:45	autofocus	NGC 6523	O	4s	309	2.79	—
21:51:50	autofocus	NGC 6523	O	4s	303	2.76	—
21:59:15	other	NGC 6523	O	4s	254	2.74	—
21:59:25	other	NGC 6523	O	4s	218	3.13	—
21:59:35	other	NGC 6523	O	4s	236	2.93	—
21:59:45	other	NGC 6523	O	4s	252	2.90	—
21:59:55	other	NGC 6523	O	4s	247	2.91	—
22:00:05	other	NGC 6523	O	4s	170	3.31	—
22:00:15	other	NGC 6523	O	4s	132	3.82	—
22:00:25	other	NGC 6523	O	4s	62	7.71	—
22:00:35	other	NGC 6523	O	4s	36	11.54	—
22:00:47	other	NGC 6523	O	4s	163	3.73	—
22:00:59	other	NGC 6523	O	4s	163	3.62	—
22:10:56	light	NGC 6523	O	300s	241	3.88	93%
22:16:13	light	NGC 6523	S	300s	795	3.69	98%
22:21:14	light	NGC 6523	S	300s	812	3.62	100%

Star counts come from Hocus Focus detection on each saved sub, tagged with the filter in place at exposure start and the target then being imaged. Frames inside completed autofocus runs are excluded. Still capture times come from the AllSky filenames. All times are local.