David's Astronomy Pages
Notes - Session 831 (2020-11-21)

 
Bullet Session Aims & Highlights
 - Observing Result
 - Night Summary Plot
 - Session Event Log
 
Bullet Operational Issues
  - Critical Issues (0),  Major Issues (0),  Minor Issues (4),  Continuous Improvement (4)
Bullet Images from 2020-11-21 >>
Bullet Foc2 Wide Search Auto-Focusing Issue (S831)
 

Session Aims & Highlights (2020-11-21)

Main aims -

  1. Comet C/2020 M3 (Atlas). Take images of new comet currently pasisng through Orion
  2. Targets.  Acquire images of a selection of deep sky targets
  3. Bug fixes.  Check that bugs discovered in last session in AstroMain 3.31.2 have been fixed, and that recent new features are working ok

Equipment & Software

Highlights

Summary Plots & Logs

Observing Plan
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Observing Result
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Dome & Scope Slewing Performance
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Slew/Centering Performance
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Guiding Performance
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Sky Conditions (Locate Frames)
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Night Sky Summary Plot
Top axis: Sky Brightness at Zenith (in ADU/s)
Lefthand axis: Local Time (hh LT). Righthand axis: Sun Altitude (degs)
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Pre-Session Weather Forecast (API data from darksky.net)
Pre-Session Weather forecast showed a clear spell in middle of evening (cloud cover 0-23%) but clouding at 22:00 to 02:00 (cloud cover 54-78%) ,
becoming totally overcast from 02:00 onwards.  Minimum temperature 6 degC.
Wind becoming strong onwards dawn with potential rain (heavy rain forecast from 08:00 onwards)

In the event there was a clear spell from 18:00 to 20:10 but transparency and seeing were fairly poor, and sky
was bright due to moonlight and cloud reflection. Cloud thickened at 21:45 and session suspended.  
User intervention made to finish session at 23:30 due to  cloud and rain risk.
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Session Event Log
Time     Event Detail
16:21:58 Session Monitoring AutoStart monitoring for Live Session opportunity starting between 16:47 & 06:02
16:47:09   AutoStart Waiting AutoStart waiting till earliest start time at 16:47
16:47:10   AutoStart Delayed Session delayed due to cloud
17:20:02 Session AutoStarting Session autostarting (17:20)
17:20:32 Session Created Live Session Created (2020-11-21 S00831, ImageSaveNum: 831001)
17:20:34   Scope Switched On Telescope Power has been switched on via UPB Powerbox.
17:22:27   Services Started Observatory Services started
17:22:35 Observatory (Auto) Observatory placed in Fully-Automated Mode
17:22:37 Session Pending Session pending (2020-11-21)
17:22:39 Session Initiating Session initiating (2020-11-21)
17:22:41   Plan Requested Observing Plan requested from AstroPlan (1.17.5)
17:23:08   Plan Loaded Observing Plan loaded to queue (2020-11-21 V1 BEST PLAN, Plan ID: 566)
17:23:20   Camera1 Connected SBIG Camera Connected (set point -20°C)
17:23:26   Telescope Connected Telescope Connected (TheSky6)
17:23:36 Session Equilibration Session ready for dome & camera equilibration
17:25:23   Dome Opened Dome opened (opening time 45s)
17:25:38 Session Running Session running
17:25:39   Queue Started Observing Queue started (47 targets selected)
17:26:55       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
17:30:08       Focusing Completed Foc1 AutoFocus Completed (Profile No 1)
17:32:46       Focusing Completed Foc1 AutoFocus Completed (Profile No 1)
17:32:48       Focusing Started-Foc2 Foc2 Focusing Started (Secondary Scope, using ShCap)
17:36:04       Focusing Completed Foc2 AutoFocus Completed (Profile No 2, wide)
17:37:58       Focusing Completed Foc2 AutoFocus Completed (Profile No 2)
17:38:15       Focusing Checked Foc2 Focusing Check Succeeded
17:38:22     Target Started (1/47) Target started (1/47, UGCA 105)
17:42:01       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
17:44:45       Focusing Completed Foc1 AutoFocus Completed (Profile No 3)
18:00:49     Target Completed Target completed (1/47, UGCA 105)
18:00:51     Target Started (2/47) Target started (2/47, C/2019 L3 (ATLAS))
18:03:23       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
18:06:24       Focusing Completed Foc1 AutoFocus Completed (Profile No 4)
18:13:06     Target Completed Target completed (2/47, C/2019 L3 (ATLAS))
18:13:08     Target Started (3/47) Target started (3/47, GCVS BL Lac)
18:13:10   Dome Running test to see Dome Driver is stalled
18:13:26   Dome Dome Driver/Dome Slaving found to be ok.
18:16:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
18:19:43       Focusing Completed Foc1 AutoFocus Completed (Profile No 5)
18:23:25     Target Completed Target completed (3/47, GCVS BL Lac)
18:23:28     Target Started (4/47) Target started (4/47, WDS GRB 34)
18:26:05       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
18:28:52       Focusing Completed Foc1 AutoFocus Completed (Profile No 6)
18:30:34     Target Completed Target completed (4/47, WDS GRB 34)
18:31:13     Target Started (5/47) Target started (5/47, 61 Cyg)
18:34:25       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
18:37:27       Focusing Completed Foc1 AutoFocus Completed (Profile No 7)
18:38:45     Target Completed Target completed (5/47, 61 Cyg)
18:38:47     Target Started (6/47) Target started (6/47, GCVS CI Cyg)
18:41:15       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
18:44:05       Focusing Completed Foc1 AutoFocus Completed (Profile No 8)
18:47:41     Target Completed Target completed (6/47, GCVS CI Cyg)
18:47:43     Target Started (7/47) Target started (7/47, GCVS S Cyg)
18:50:24       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
18:53:09       Focusing Completed Foc1 AutoFocus Completed (Profile No 9)
19:02:55     Target Completed Target completed (7/47, GCVS S Cyg)
19:02:57     Target Started (8/47) Target started (8/47, 184P/Lovas)
19:06:23       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
19:16:24     Target Completed Target completed (8/47, 184P/Lovas)
19:16:26     Target Started (9/47) Target started (9/47, UGC 12506)
19:18:41       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
19:21:44       Focusing Completed Foc1 AutoFocus Completed (Profile No 10)
19:37:50     Target Completed Target completed (9/47, UGC 12506)
19:38:37     Target Started (10/47) Target started (10/47, GCVS HH And)
19:40:43       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
19:43:32       Focusing Completed Foc1 AutoFocus Completed (Profile No 11)
19:45:16     Target Completed Target completed (10/47, GCVS HH And)
19:46:52     Target Started (11/47) Target started (11/47, GCVS SS Cyg)
19:49:25       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
19:52:32       Focusing Completed Foc1 AutoFocus Completed (Profile No 12)
19:56:08     Target Completed Target completed (11/47, GCVS SS Cyg)
20:02:04     Target Started (12/47) Target started (12/47, NGC 932)
20:04:51       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
20:22:08     Target Completed Target completed (12/47, NGC 932)
20:24:26     Target Started (13/47) Target started (13/47, NGC 615)
20:28:22       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
20:31:13       Focusing Completed Foc1 AutoFocus Completed (Profile No 13)
20:46:58     Target Completed Target completed (13/47, NGC 615)
20:47:00     Target Started (14/47) Target started (14/47, NGC 514)
20:48:58       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
20:51:48       Focusing Completed Foc1 AutoFocus Completed (Profile No 14)
21:02:41     Target Completed Target completed (14/47, NGC 514)
21:04:10     Target Started (15/47) Target started (15/47, GCVS Z And)
21:07:15       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
21:10:23       Focusing Completed Foc1 AutoFocus Completed (Profile No 15)
21:14:05     Target Completed Target completed (15/47, GCVS Z And)
21:14:07     Target Started (16/47) Target started (16/47, NGC 720)
21:16:52       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
21:29:32     Target Completed Target completed (16/47, NGC 720)
21:30:21     Target Started (17/47) Target started (17/47, GCVS RX And)
21:33:07       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
21:36:19       Focusing Completed Foc1 AutoFocus Completed (Profile No 16)
21:38:52     Target Completed Target completed (17/47, GCVS RX And)
21:38:54     Target Started (18/47) Target started (18/47, GCVS U And)
21:40:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
21:43:34       Focusing Completed Foc1 AutoFocus Completed (Profile No 17)
21:53:16     Target Completed Target completed (18/47, GCVS U And)
21:53:18     Target Started (19/47) Target started (19/47, GCVS DY Per)
21:56:14       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
21:59:04       Focusing Completed Foc1 AutoFocus Completed (Profile No 18)
22:03:27     Target Completed Target completed (19/47, GCVS DY Per)
22:03:29     Target Started (20/47) Target started (20/47, GCVS GK Per)
22:05:23       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
22:08:12       Focusing Completed Foc1 AutoFocus Completed (Profile No 19)
22:11:10     Target Completed Target completed (20/47, GCVS GK Per)
22:11:36     Target Started (21/47) Target started (21/47, UGC 6930)
22:15:45       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
22:28:25     Target Completed Target completed (21/47, UGC 6930)
22:28:58     Target Started (22/47) Target started (22/47, GCVS RR Tau)
22:31:32       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
22:34:31       Focusing Completed Foc1 AutoFocus Completed (Profile No 20)
22:40:27     Target Completed Target completed (22/47, GCVS RR Tau)
22:40:30     Target Started (23/47) Target started (23/47, GCVS CM Tau)
22:42:33       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
22:45:29       Focusing Completed Foc1 AutoFocus Completed (Profile No 21)
22:59:14     Target Completed Target completed (23/47, GCVS CM Tau)
23:00:02     Target Started (24/47) Target started (24/47, UGC 4299)
23:03:06       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
23:20:20     Target Completed Target completed (24/47, UGC 4299)
23:22:24     Target Started (25/47) Target started (25/47, NGC 2782)
23:24:47       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
23:27:44       Focusing Completed Foc1 AutoFocus Completed (Profile No 22)
23:43:18     Target Completed Target completed (25/47, NGC 2782)
23:44:46     Target Started (26/47) Target started (26/47, UGC 4872)
23:47:00       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
23:50:13       Focusing Completed Foc1 AutoFocus Completed (Profile No 23)
00:06:03     Target Completed Target completed (26/47, UGC 4872)
00:06:05     Target Started (27/48) Target started (27/48, C/2020 M3 (Atlas), ToO)
00:08:03       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
00:10:53       Focusing Completed Foc1 AutoFocus Completed (Profile No 24)
01:09:54     Target Completed Target completed (27/48, C/2020 M3 (Atlas), ToO)
01:09:56     Target Missed (28/48) Target's time slot was missed (28/48, UGCA 47)
01:09:58     Target Missed (29/48) Target's time slot was missed (29/48, IC 402)
01:10:00     Target Started (30/48) Target started (30/48, NGC 1843)
01:16:47     Target Completed Target partially completed (30/48, NGC 1843)
01:16:49     Target Started (31/48) Target started (31/48, UGCA 102)
01:19:08       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
01:22:39       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
01:38:14     Target Completed Target completed (31/48, UGCA 102)
01:38:16     Target Started (32/48) Target started (32/48, C/2020 M3 (Atlas))
01:40:57       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
01:44:44     Target Completed Target completed (32/48, C/2020 M3 (Atlas))
01:45:47     Target Started (33/48) Target started (33/48, UGCA 116)
01:47:47       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
02:05:29     Target Completed Target completed (33/48, UGCA 116)
02:08:09     Target Started (34/48) Target started (34/48, GCVS FU Ori)
02:09:49       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
02:12:59       Focusing Completed Foc1 AutoFocus Completed (Profile No 26)
02:15:37     Target Completed Target completed (34/48, GCVS FU Ori)
02:16:29     Target Started (35/48) Target started (35/48, UGCA 127)
02:19:30       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
02:22:31       Focusing Completed Foc1 AutoFocus Completed (Profile No 27)
02:38:10     Target Completed Target completed (35/48, UGCA 127)
02:38:51     Target Started (36/48) Target started (36/48, Scholz's Star)
02:41:33       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
02:44:35       Focusing Completed Foc1 AutoFocus Completed (Profile No 28)
02:59:50     Target Completed Target completed (36/48, Scholz's Star)
03:00:17     Target Started (37/48) Target started (37/48, UGCA 164)
03:02:20       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
03:17:13 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
03:17:15   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
03:17:17     Target Aborted (37/48) Target aborted (37/48, UGCA 164) due to wind
03:17:19   Queue Paused Queue paused for Session Suspension
03:17:21 Session Suspended Session suspended
03:18:03   Dome Closed Dome closed (closing time 45s)
03:19:39     Target Cancelled Target cancelled (37/48, UGCA 164) due to wind
03:20:13 Session Resuming Session resuming
03:20:58   Dome Opened Dome opened (opening time 45s)
03:21:00 Session Running Session running
03:21:02   Queue Resumed Observing Queue resumed
03:22:39     Target Started (38/48) Target started (38/48, UGC 4332)
03:24:36       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
03:27:38       Focusing Completed Foc1 AutoFocus Completed (Profile No 29)
03:43:21     Target Completed Target completed (38/48, UGC 4332)
03:45:01     Target Started (39/48) Target started (39/48, GCVS U Gem)
03:47:04       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
03:50:23       Focusing Completed Foc1 AutoFocus Completed (Profile No 30)
03:53:07     Target Completed Target completed (39/48, GCVS U Gem)
03:54:34     Target Started (40/48) Target started (40/48, GCVS RZ LMi)
03:56:40       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
03:59:21       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
04:04:10     Target Completed Target completed (40/48, GCVS RZ LMi)
04:06:22     Target Started (41/48) Target started (41/48, UGCA 201)
04:08:15       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
04:11:23       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
04:12:03 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
04:12:05   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
04:12:08     Target Aborted (41/48) Target aborted (41/48, UGCA 201) due to wind
04:12:10   Queue Paused Queue paused for Session Suspension
04:12:12 Session Suspended Session suspended
04:12:53   Dome Closed Dome closed (closing time 40s)
04:14:13 Session Resuming Session resuming
04:14:58   Dome Opened Dome opened (opening time 45s)
04:15:00 Session Running Session running
04:15:02   Queue Resumed Observing Queue resumed
04:15:04     Target Started (41/48) Target started (41/48, UGCA 201)
04:22:14 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
04:22:16   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
04:22:19     Target Aborted (41/48) Target aborted (41/48, UGCA 201) due to wind
04:22:21   Queue Paused Queue paused for Session Suspension
04:22:23 Session Suspended Session suspended
04:23:09   Dome Closed Dome closed (closing time 50s)
04:24:24 Session Resuming Session resuming
04:25:09   Dome Opened Dome opened (opening time 45s)
04:25:11 Session Running Session running
04:25:13   Queue Resumed Observing Queue resumed
04:25:15     Target Started (41/48) Target started (41/48, UGCA 201)
04:31:03     Target Completed Target partially completed (41/48, UGCA 201)
04:31:05     Target Started (42/48) Target started (42/48, GCVS DX Cnc)
04:32:56       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
04:36:20       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
04:40:49     Target Completed Target completed (42/48, GCVS DX Cnc)
04:40:51     Target Started (43/48) Target started (43/48, GCVS SY Cnc)
04:42:33       Focusing Failed Foc1 Focusing Failed - star is too dim (TCF-S)
04:47:08     Target Completed Target completed (43/48, GCVS SY Cnc)
04:49:05     Target Started (44/48) Target started (44/48, UGCA 188)
04:51:08       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
04:53:57       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
04:55:52 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
04:55:54   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
04:55:57     Target Aborted (44/48) Target aborted (44/48, UGCA 188) due to wind
04:55:59   Queue Paused Queue paused for Session Suspension
04:56:01 Session Suspended Session suspended
04:56:47   Dome Closed Dome closed (closing time 45s)
05:02:58 Session Resuming Session resuming
05:03:43   Dome Opened Dome opened (opening time 45s)
05:03:45 Session Running Session running
05:03:47   Queue Resumed Observing Queue resumed
05:03:49     Target Started (44/48) Target started (44/48, UGCA 188)
05:06:58 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
05:07:00   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
05:07:19   Camera1 Connected SBIG Camera Connected (set point -20°C)
05:07:21   CCDSoft Restarted CCDSoft Restarted in attempt to fix image save issue [0000]
05:08:59 Session Suspended Session suspended
05:09:48   Dome Closed Dome closed (closing time 45s)
05:10:29     Target Aborted (44/48) Target aborted (44/48, UGCA 188) due to wind
05:10:31   Queue Paused Queue paused for Session Suspension
05:11:08 Session Resuming Session resuming
05:11:54   Dome Opened Dome opened (opening time 45s)
05:11:56 Session Running Session running
05:11:58   Queue Resumed Observing Queue resumed
05:12:00     Target Started (45/48) Target started (45/48, UGC 5459)
05:14:02       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
05:16:09 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
05:16:11   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
05:16:18       Focusing Aborted Foc1 Focusing Aborted
05:16:21     Target Aborted (45/48) Target aborted (45/48, UGC 5459) due to wind
05:16:23   Queue Paused Queue paused for Session Suspension
05:16:25 Session Suspended Session suspended
05:17:09   Dome Closed Dome closed (closing time 45s)
05:20:14 Session Resuming Session resuming
05:20:59   Dome Opened Dome opened (opening time 45s)
05:21:01 Session Running Session running
05:21:03   Queue Resumed Observing Queue resumed
05:21:05     Target Started (45/48) Target started (45/48, UGC 5459)
05:29:20 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
05:29:22   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
05:29:25     Target Aborted (45/48) Target aborted (45/48, UGC 5459) due to wind
05:29:27   Queue Paused Queue paused for Session Suspension
05:29:30 Session Suspended Session suspended
05:30:15   Dome Closed Dome closed (closing time 45s)
05:30:49     Target Cancelled Target cancelled (45/48, UGC 5459) due to wind
05:31:35 Session Resuming Session resuming
05:32:20   Dome Opened Dome opened (opening time 45s)
05:32:23 Session Running Session running
05:32:25   Queue Resumed Observing Queue resumed
05:33:26 Critical Wind Alert Critical Wind Alert (Obs.Manager will close the Shutter)
05:33:28   HardSuspend Called Hard Suspend is called due to Critical Conditions (wind)
05:33:30   Queue Paused Queue pausing for Session Suspension
05:33:31 Session Suspended Session suspended
05:34:16   Dome Closed Dome closed (closing time 45s)
05:35:36 Session Resuming Session resuming
05:36:21   Dome Opened Dome opened (opening time 45s)
05:36:23 Session Running Session running
05:36:25     Target Started (46/48) Target started (46/48, NGC 4559)
05:36:27   Queue Resumed Observing Queue resumed
05:38:38       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
05:42:10       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
05:57:59     Target Completed Target completed (46/48, NGC 4559)
05:58:01     Target Started (47/48) Target started (47/48, UGC 5760)
06:00:44       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
06:03:34       Focusing Failed Foc1 Focusing Failed - failed QC check (Quadratic)
06:18:45   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars)
06:19:37     Target Completed Target completed (47/48, UGC 5760)
06:19:39   Queue Paused Queue paused for Session Suspension
06:19:40 Session Suspended Session suspended
06:20:30   Dome Closed Dome closed (closing time 50s)
06:41:25     Target Cancelled Target cancelled (48/48, GCVS CN Leo) due to other condition
06:41:30   Queue Completed Job Queue completed
06:41:32 Session Closing Session closing
06:41:37   Dome Closed Dome already closed (closed at 06:20, closing time 50s)
06:42:27   Dome Parked Dome parked (parking time 41s), Az: 90.0 deg
06:43:06   Telescope Parked Telescope parked (parking time 31s)
06:43:36   Telescope Switched Off Telescope Power has been switched off via UPB Powerbox.
06:44:24   Services Stopped Night Services stopped
06:44:26 Session Housekeeping Housekeeping Started (Cleanup FITS, Create Fits Summary, Transfer Files)
06:44:58 Session Finished Session Finished
 
Session Alerts
Time     Alert Detail
18:13:07 Dome Dome has been unexpectedly stationary for more than 12 mins
18:13:22 Dome Dome Movements have begun again (outage 12.3 mins)
18:13:26 Dome Dome Driver/Dome Slaving found to be ok following Slew Tests.
21:55:01 Dome Discrepency Difference between Telescope Az and Dome Az is > 8 deg (GCVS DY Per)
05:06:59 CCDSoft Image file [0000] hasn't been saved to disk, possible CCDSoft issue
05:13:04 Dome Discrepency Difference between Telescope Az and Dome Az is > 8 deg (UGC 5459)

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Operational Issues (2020-11-21 S831)

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Critical Issues

Major Issues

Minor Issues

Continuous Improvement 

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Foc2 Wide Search Auto-Focusing Issue (S831)

Whilst Foc2 Automated Focusing for the TS80 Secondary Scope has improved considerably,  a continuing potential issue was highlighted by the S831 session whereby a near-miss was avoide but only just.  

Wide Search focus algorithum works by scanning a relatively wide focusing range at the start of the session looking for the rough position where the focus is best, it order to set a smaller search range for more detailed auto-focusing.  This typcally work well, but occasionally a rogue point (a point giving an unexpectedly low FWHM value as low as the FWHM associted with the accepted best focus) could cause the algorithum to give pass on an inappropriate 'best focus' position for the narrow search standard focusing, which may prevent the detection of best focus. leading to autoguding failures.

In this session after reaching a best focus position at DRO 8810 (point 7/16 , FWHM 3.22") the profile found a later point with similar apparent focus at DRO 8410 (point 15/16, FWHM 3.45").     Fortunately the former point at 8810 had a lower FWHM value and was chosen as the best focus point and the operation successfully went on to confirm the eventual best focus at 8816 during standard focusing.  See table and graph below.

| Image                     | Result    | DRO   | FWHM  | HFD   | Temp  | Max   | Mag    | SN   | Elong |
| Taking ShCap Frame   1/16   Ok        |  9110 | 28.51 |     - |   4.9 |  1612 | -10.09 |   42 |  1.04 | 
| Taking ShCap Frame   2/16   Ok        |  9060 | 21.84 |     - |   4.9 |  1964 | -10.41 |   55 |  1.05 | 
| Taking ShCap Frame   3/16   Ok        |  9010 | 16.58 |     - |   4.8 |  3244 | -10.96 |   86 |  1.06 | 
| Taking ShCap Frame   4/16   Ok        |  8960 | 11.21 |     - |   4.8 |  5928 | -11.70 |  149 |  1.05 | 
| Taking ShCap Frame   5/16   Ok        |  8910 |  7.20 |     - |   4.8 | 10980 | -12.32 |  226 |  1.07 | 
| Taking ShCap Frame   6/16   Ok        |  8860 |  4.56 |     - |   4.8 | 22684 | -13.04 |  351 |  1.02 | 
| Taking ShCap Frame   7/16   Ok        |  8810 |  3.22 |     - |   4.8 | 35768 | -13.56 |  469 |  1.03 | 
  Moving TS80 Focuser...      Fail      Timed Out
| Taking ShCap Frame   8/16   Ok        |   869 |     - |     - |   4.8 |   524 |      - |    - |     - | 
| Taking ShCap Frame   9/16   Ok        |  8710 |  8.43 |     - |   4.9 | 11948 | -12.69 |  287 |  1.13 | 
| Taking ShCap Frame  10/16   Ok        |  8660 | 15.16 |     - |   4.9 |  5308 | -11.62 |  144 |  1.09 | 
| Taking ShCap Frame  11/16   Ok        |  8610 | 28.75 |     - |   4.9 |  3480 | -11.11 |   99 |  1.04 | 
| Taking ShCap Frame  12/16   Ok        |  8560 | 39.26 |     - |   4.9 |  2356 | -10.40 |   57 |  1.05 | 
| Taking ShCap Frame  13/16   Ok        |  8510 | 47.49 |     - |   4.9 |  1720 |  -9.92 |   38 |  1.03 | 
| Taking ShCap Frame  14/16   Ok        |  8460 | 54.58 |     - |   4.9 |  1420 |  -9.38 |   23 |  1.06 | 
| Taking ShCap Frame  15/16   Ok        |  8410 |  3.45 |     - |   4.9 |  1224 |  -8.56 |   11 |  1.30 | 
| Taking ShCap Frame  16/16   Ok        |  8360 | 58.07 |     - |   4.9 |  1048 |  -7.74 |    5 |  1.29 | 

Wide Search Focus profile (S831)
Profile has picked point of best focus at 8810,
but the rogue point at 8410 had very similar FWHM and was thus very close to being 'picked'.
   Image
  
Standard Focus profile (S831)
Profile has picked position of best focus at 8816.
(its unclear why the graph hasn't been saved to log folder with
graph points/curve - This is a bug as the Graph uploaded to website (now overwritten) was ok !
   Image
  

Although the point at 8410 has a similar, though slightly poorer FWHM (3.45" vs 3.22") it has a significantly lower maximum pixel value (1224 vs 35768) and its adjacent points are clearly indicating poorer focus (FWHM  54.58" - 58.07" vs FWHM 4.56" - 8.43").  This inspection shows that the point is clearly a rogue point but how can this be codified so that such points can be definitively rejected ?

It is worth noting that 'smart' wide search focusing which has been raised as a continuous improvement item would have recognised at c. 11/16 or 12/16 that point of best focus had been definitively passed and would have skipped the remaining points including the rogue point (15/16 ) and would have been faster.

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