David's Astronomy Pages Notes - Session 698 (2019-09-21)

Notes (S697)

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Notes (S699)

	Session Aims & Highlights
	- Observing Result  - Night Summary Plot  - Session Event Log
	Operational Issues
	- Critical Issues (0),  Major Issues (1),  Minor Issues (8),  Continuous Improvement (8)
	Images from 2019-09-21  >>

Session Aims & Highlights (2019-09-21)

Main aims

1. Centering Chart: Test out fixes to 'Centering Charts' (AstroMain 3.11.6)
2. Mixed Target - Image a selection of targets, but mainly Open Clusters, Variable Stars and Nearby Star Targets due to bright moonlit sky conditions
3. Software & Systems  - Check stability of software and presence of any side effects following ongoing enhancements to AstroMain and associated support programs.

 
Equipment & Software

• 12" LX200 and ST-10XME
•  80mm APO and ZWO ASI 178MC
•  CCDApp2, TheSky6, CCDSoft5, PHD2,  POTH Hub
•   Pegasus UPB & Motor Focus, TCF-S
   
• AstroMain 3.11.7,  Astroguard 1.2.4,   AstroPlan 1.10.5,  AstroVOE 1.3.1, UPB 1.4.17  (AstroWeather 1.7.8, AstroAllSky 3.4.9 )

Highlights

• None

Lowlights

• System hung whilst performing image link (CCDSoft & TheSky6)

Summary Plots & Logs

Observing Plan

Observing Result

Slew/Centering Performance

Night Sky Summary Plot Top axis: Sky Brightness at Zenith (in ADU/s) Lefthand axis: Local Time (hh LT). Righthand axis: Sun Altitude (degs)

Pre-Session Weather Forecast (AstroWeather 1.7.8) Cloudy for most of night with skies potentially clearing at 03:00,  low probability of any significant rain (As it turned out the evolving forecast through the late evening extended the cloud further and further through the night, and indeed it was cloudy for the the whole night, only clearing at around 06:30 after the sun has risen. A few spots of rain occurred at around 00:45 and 02:40)

Session Event Log

Time     Event Detail 20:00:54 Session Created Live Session Created (2019-09-21 S00698, ImageSaveNum: 698001) 20:03:23   Obs.Manager Started Obs.Manager started 20:03:30   Services Started Observatory Services started 20:04:29 Observatory (Auto) Observatory placed in Fully-Automated Mode 20:04:31 Session Pending Session pending (2019-09-21) 20:04:33 Session Initiating Session initiating (2019-09-21) 20:04:35   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 20:05:15   Plan Loaded Observing Plan loaded to queue (2019-09-21 V1 BEST PLAN, Plan ID: 357) 20:05:33   Camera1 Connected SBIG Camera Connected (set point -10°C) 20:05:35   Telescope Connected Telescope Connected (TheSky6) 20:05:48 Session Equilibration Session ready for dome & camera equilibration 20:18:44   Shutter Opened Shutter opened (opening time 45s) 20:18:47   Equilibration Started Dome Equilibration started 20:26:00   Equilibration Ended Dome Equilibration ended (7.3 mins total) 20:26:02 Session Running Session running 20:26:04   Queue Started Observing Queue started (12 targets selected) 20:26:06     Target Started (1/12) Target started (1/12, GCVS CI Cyg) 20:28:39       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:31:06       Focusing Completed Foc1 AutoFocus Completed (Profile No 1) 20:34:48     Target Completed Target completed (1/12, GCVS CI Cyg) 20:34:50     Target Started (2/12) Target started (2/12, GCVS WZ Sge) 20:37:03       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:39:28       Focusing Completed Foc1 AutoFocus Completed (Profile No 2) 20:45:15     Target Completed Target completed (2/12, GCVS WZ Sge) 20:45:17     Target Started (3/12) Target started (3/12, GCVS FG Sge) 20:47:11       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:49:39       Focusing Completed Foc1 AutoFocus Completed (Profile No 3) 20:52:10     Target Completed Target completed (3/12, GCVS FG Sge) 20:52:12     Target Started (4/12) Target started (4/12, GCVS EV Lac) 20:54:08       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:56:10       Focusing Completed Foc1 AutoFocus Completed (Profile No 4) 20:58:30     Target Completed Target completed (4/12, GCVS EV Lac) 20:58:32     Target Started (5/12) Target started (5/12, NGC 5278) 21:02:49       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:04:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 5) 21:20:44     Target Completed Target completed (5/12, NGC 5278) 21:20:47     Target Started (6/12) Target started (6/12, GCVS U Her) 21:25:13       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:26:57       Focusing Completed Foc1 AutoFocus Completed (Profile No 6) 21:35:21     Target Completed Target completed (6/12, GCVS U Her) 21:35:23     Target Started (7/12) Target started (7/12, GCVS SS Her) 21:42:26     Target Completed Target completed (7/12, GCVS SS Her) 21:42:28     Target Started (8/12) Target started (8/12, NGC 5218) 21:45:59       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:48:12       Focusing Completed Foc1 AutoFocus Completed (Profile No 7) 22:04:21     Target Completed Target completed (8/12, NGC 5218) 22:04:23     Target Started (9/12) Target started (9/12, NGC 5693) 22:07:44       Focusing Failed Foc1 Focusing Failed - unable to find a star (TCF-S) 22:23:49     Target Completed Target completed (9/12, NGC 5693) 22:23:51     Target Started (10/12) Target started (10/12, GCVS R CrB) 22:26:57       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:28:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 8) 22:31:30     Target Completed Target completed (10/12, GCVS R CrB) 22:31:33     Target Started (11/12) Target started (11/12, HIP 87937) 22:35:28       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:37:25       Focusing Completed Foc1 AutoFocus Completed (Profile No 9) 22:39:47     Target Completed Target completed (11/12, HIP 87937) 22:39:49     Target Started (12/12) Target started (12/12, GCVS V Sge) 22:42:20       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:44:22       Focusing Completed Foc1 AutoFocus Completed (Profile No 10) 22:52:21     Target Completed Target completed (12/12, GCVS V Sge) 22:52:24   Queue Completed Job Queue completed 22:52:26 Session Initiating Session initiating (2019-09-21) 22:52:29   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 22:52:49   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 22:53:04   Plan Loaded Observing Plan loaded to queue (2019-09-21 V3 BEST PLAN, Plan ID: 359) 22:53:12   Camera1 Connected SBIG Camera Connected (set point -10°C) 22:53:14   Telescope Connected Telescope Connected (TheSky6) 22:53:26 Session Equilibration Session ready for dome & camera equilibration 22:53:29   Equilibration Started Dome Equilibration started 22:53:31   Equilibration Skipped Dome Equilibration skipped by user 22:53:33 Session Running Session running 22:53:35   Queue Started Observing Queue started (4 targets selected) 22:55:49     Target Started (1/4) Target started (1/4, GCVS CI Cyg) 22:58:01       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:59:58       Focusing Completed Foc1 AutoFocus Completed (Profile No 11) 23:03:42     Target Completed Target completed (1/4, GCVS CI Cyg) 23:03:44     Target Started (2/4) Target started (2/4, GCVS WZ Sge) 23:06:06       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:07:55       Focusing Completed Foc1 AutoFocus Completed (Profile No 12) 23:13:20     Target Completed Target completed (2/4, GCVS WZ Sge) 23:15:00     Target Started (3/4) Target started (3/4, GCVS FG Sge) 23:17:18       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:19:10       Focusing Completed Foc1 AutoFocus Completed (Profile No 13) 23:21:39     Target Completed Target completed (3/4, GCVS FG Sge) 23:22:21     Target Started (4/4) Target started (4/4, GCVS V Sge) 23:24:32       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:26:35       Focusing Completed Foc1 AutoFocus Completed (Profile No 14) 23:34:56     Target Completed Target completed (4/4, GCVS V Sge) 23:34:59   Queue Completed Job Queue completed 23:35:01 Session Initiating Session initiating (2019-09-21) 23:35:06   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 23:35:21   Plan Loaded Observing Plan loaded to queue (2019-09-21 V4 BEST PLAN, Plan ID: 360) 23:35:29   Camera1 Connected SBIG Camera Connected (set point -10°C) 23:35:31   Telescope Connected Telescope Connected (TheSky6) 23:35:42 Session Equilibration Session ready for dome & camera equilibration 23:35:45   Equilibration Started Dome Equilibration started 23:35:47   Equilibration Skipped Dome Equilibration skipped by user 23:35:49 Session Running Session running 23:35:51   Queue Started Observing Queue started (3 targets selected) 23:38:06     Target Started (1/3) Target started (1/3, GCVS CI Cyg) 23:40:35       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:42:27       Focusing Completed Foc1 AutoFocus Completed (Profile No 15) 23:46:12     Target Completed Target completed (1/3, GCVS CI Cyg) 23:46:15     Target Started (2/3) Target started (2/3, GCVS WZ Sge) 23:49:10       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:51:08       Focusing Completed Foc1 AutoFocus Completed (Profile No 16) 23:56:45     Target Completed Target completed (2/3, GCVS WZ Sge) 23:57:17     Target Started (3/3) Target started (3/3, GCVS V Sge) 23:59:20       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:01:21       Focusing Completed Foc1 AutoFocus Completed (Profile No 17) 00:09:20     Target Completed Target completed (3/3, GCVS V Sge) 00:09:23   Queue Completed Job Queue completed 00:09:26 Session Initiating Session initiating (2019-09-21) 00:09:32   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 00:09:46   Plan Loaded Observing Plan loaded to queue (2019-09-21 V5 BEST PLAN, Plan ID: 361) 00:09:54   Camera1 Connected SBIG Camera Connected (set point -10°C) 00:09:57   Telescope Connected Telescope Connected (TheSky6) 00:10:08 Session Equilibration Session ready for dome & camera equilibration 00:10:11   Equilibration Started Dome Equilibration started 00:10:13   Equilibration Skipped Dome Equilibration skipped by user 00:10:15 Session Running Session running 00:10:17   Queue Started Observing Queue started (3 targets selected) 00:12:32     Target Started (1/3) Target started (1/3, GCVS CI Cyg) 00:15:35       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:17:31       Focusing Completed Foc1 AutoFocus Completed (Profile No 18) 00:21:14     Target Completed Target completed (1/3, GCVS CI Cyg) 00:21:16     Target Started (2/3) Target started (2/3, GCVS WZ Sge) 00:24:10       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:26:46       Focusing Completed Foc1 AutoFocus Completed (Profile No 19) 00:32:25     Target Completed Target completed (2/3, GCVS WZ Sge) 00:32:27     Target Started (3/3) Target started (3/3, GCVS V Sge) 00:34:51       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:37:16       Focusing Completed Foc1 AutoFocus Completed (Profile No 20) 00:45:15     Target Completed Target completed (3/3, GCVS V Sge) 00:45:18   Queue Completed Job Queue completed 00:45:20 Session Initiating Session initiating (2019-09-21) 00:45:23   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 00:45:43   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 00:45:59   Plan Loaded Observing Plan loaded to queue (2019-09-21 V7 BEST PLAN, Plan ID: 363) 00:46:06   Camera1 Connected SBIG Camera Connected (set point -10°C) 00:46:08   Telescope Connected Telescope Connected (TheSky6) 00:46:19 Session Equilibration Session ready for dome & camera equilibration 00:46:22   Equilibration Started Dome Equilibration started 00:46:24   Equilibration Skipped Dome Equilibration skipped by user 00:46:26 Session Running Session running 00:46:28   Queue Started Observing Queue started (2 targets selected) 00:48:43     Target Started (1/2) Target started (1/2, GCVS CI Cyg) 00:50:46       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:52:39       Focusing Completed Foc1 AutoFocus Completed (Profile No 21) 00:56:22     Target Completed Target completed (1/2, GCVS CI Cyg) 00:56:36     Target Started (2/2) Target started (2/2, GCVS V Sge) 00:59:30       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:02:25       Focusing Completed Foc1 AutoFocus Completed (Profile No 22) 01:10:34     Target Completed Target completed (2/2, GCVS V Sge) 01:10:37   Queue Completed Job Queue completed 01:10:40 Session Initiating Session initiating (2019-09-21) 01:10:43   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 01:10:58   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 01:11:08   Plan Loaded Observing Plan loaded to queue (2019-09-21 V9 BEST PLAN, Plan ID: 365) 01:11:16   Camera1 Connected SBIG Camera Connected (set point -10°C) 01:11:18   Telescope Connected Telescope Connected (TheSky6) 01:11:28 Session Equilibration Session ready for dome & camera equilibration 01:11:31   Equilibration Started Dome Equilibration started 01:11:33   Equilibration Skipped Dome Equilibration skipped by user 01:11:35 Session Running Session running 01:11:37   Queue Started Observing Queue started (1 targets selected) 01:13:58     Target Started (1/1) Target started (1/1, GCVS V Sge) 01:16:38       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:19:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 23) 01:27:44     Target Completed Target completed (1/1, GCVS V Sge) 01:27:47   Queue Completed Job Queue completed 01:27:51 Session Initiating Session initiating (2019-09-21) 01:27:56   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 01:28:06   Plan Loaded Observing Plan loaded to queue (2019-09-21 V10 BEST PLAN, Plan ID: 366) 01:28:14   Camera1 Connected SBIG Camera Connected (set point -10°C) 01:28:16   Telescope Connected Telescope Connected (TheSky6) 01:28:26 Session Equilibration Session ready for dome & camera equilibration 01:28:29   Equilibration Started Dome Equilibration started 01:28:31   Equilibration Skipped Dome Equilibration skipped by user 01:28:33 Session Running Session running 01:28:35   Queue Started Observing Queue started (1 targets selected) 01:30:56     Target Started (1/1) Target started (1/1, GCVS V Sge) 01:33:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:36:41       Focusing Completed Foc1 AutoFocus Completed (Profile No 24) 01:44:55     Target Completed Target completed (1/1, GCVS V Sge) 01:44:58   Queue Completed Job Queue completed 01:45:01 Session Initiating Session initiating (2019-09-21) 01:45:04   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 01:45:14   Plan Loaded Observing Plan loaded to queue (2019-09-21 V11 BEST PLAN, Plan ID: 367) 01:45:22   Camera1 Connected SBIG Camera Connected (set point -10°C) 01:45:24   Telescope Connected Telescope Connected (TheSky6) 01:45:36 Session Equilibration Session ready for dome & camera equilibration 01:45:39   Equilibration Started Dome Equilibration started 01:45:41   Equilibration Skipped Dome Equilibration skipped by user 01:45:43 Session Running Session running 01:45:45   Queue Started Observing Queue started (1 targets selected) 01:48:04     Target Started (1/1) Target started (1/1, GCVS V Sge) 01:50:53       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:55:28 Critical Cloud Alert Critical Cloud Alert (Obs.Manager will close the Shutter) 01:55:30   HardSuspend Called Hard Suspend is called due to Critical Conditions (cloud) 01:55:40       Focusing Aborted Foc1 Focusing Aborted 01:55:43       Focusing Aborted Foc1 Focusing Aborted 01:55:45     Target Aborted (1/1) Target aborted (1/1, GCVS V Sge) due to cloud 01:55:47   Queue Paused Queue pausing for HardSuspend 01:57:34 Session Suspended Session suspended 01:58:23   Shutter Closed Shutter closed (closing time 49s) 01:58:25     Queue Resumed Queue resumed after HardSuspend (163s) 01:58:27   Queue Completed Job Queue completed 01:58:30 Session Initiating Session initiating (2019-09-21) 01:58:33   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 01:59:13   Plan Loaded Observing Plan loaded to queue (2019-09-21 V12 BEST PLAN, Plan ID: 368) 01:59:21   Camera1 Connected SBIG Camera Connected (set point -10°C) 01:59:23   Telescope Connected Telescope Connected (TheSky6) 01:59:34 Session Equilibration Session ready for dome & camera equilibration 01:59:36 Wait on Weather Waiting for acceptable weather conditions 02:04:36 Session Suspended Session suspended 02:04:38   Queue Started Observing Queue started (2 targets selected) 02:12:11     Target Cancelled Target cancelled (1/2, GCVS V Sge) due to cloud 02:17:32   Shutter Opened Shutter opened (opening time 45s) 02:17:34 Session Running Session running 02:17:37   Queue Resumed Observing Queue resumed 02:17:39     Target Started (2/2) Target started (2/2, GCVS V Sge) 02:29:42     Target Completed Target completed (2/2, GCVS V Sge) 02:29:45   Queue Completed Job Queue completed 02:29:48 Session Initiating Session initiating (2019-09-21) 02:29:53   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 02:30:08   Plan Loaded Observing Plan loaded to queue (2019-09-21 V13 BEST PLAN, Plan ID: 369) 02:30:16   Camera1 Connected SBIG Camera Connected (set point -10°C) 02:30:18   Telescope Connected Telescope Connected (TheSky6) 02:30:30 Session Equilibration Session ready for dome & camera equilibration 02:30:33   Equilibration Started Dome Equilibration started 02:30:35   Equilibration Skipped Dome Equilibration skipped by user 02:30:37 Session Running Session running 02:30:39   Queue Started Observing Queue started (6 targets selected) 02:32:53     Target Started (1/6) Target started (1/6, GCVS FO Ori) 02:37:31       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:39:31       Focusing Completed Foc1 AutoFocus Completed (Profile No 26) 02:43:33     Target Completed Target completed (1/6, GCVS FO Ori) 02:43:35     Target Started (2/6) Target started (2/6, GCVS U Gem) 02:43:37     Target Failed Target failed due to airmass limit (2/6, GCVS U Gem) 02:50:04     Target Started (3/6) Target started (3/6, C/2019 Q4 (Borisov)) 02:55:01       Focusing Failed Foc1 Focusing Failed - unable to find a star (TCF-S) 03:01:04 Critical Cloud Alert Critical Cloud Alert (Obs.Manager will close the Shutter) 03:01:06   HardSuspend Called Hard Suspend is called due to Critical Conditions (cloud) 03:01:07     Target Aborted (3/6) Target aborted (3/6, C/2019 Q4 (Borisov)) due to cloud 03:01:09   Queue Paused Queue pausing for HardSuspend 03:03:06 Session Suspended Session suspended 03:03:54   Shutter Closed Shutter closed (closing time 48s) 03:03:57     Queue Resumed Queue resumed after HardSuspend (167s) 03:19:45 Session Resuming Session resuming 03:20:31   Shutter Opened Shutter opened (opening time 45s) 03:20:33 Session Running Session running 03:20:35   Queue Resumed Observing Queue resumed 03:20:37     Target Started (4/6) Target started (4/6, GCVS RZ LMi) 03:20:39     Target Failed Target failed due to airmass limit (4/6, GCVS RZ LMi) 03:21:41 Critical Cloud Alert Critical Cloud Alert (Obs.Manager will close the Shutter) 03:21:43   HardSuspend Called Hard Suspend is called due to Critical Conditions (cloud) 03:21:45   Queue Paused Queue pausing for HardSuspend 03:23:48 Session Suspended Session suspended 03:24:36   Shutter Closed Shutter closed (closing time 48s) 03:24:38   Queue Resumed Queue resumed after HardSuspend (175s) 03:45:14     Target Cancelled Target cancelled (5/6, NGC 4157) due to cloud 03:45:18   Queue Paused Queue paused for SoftSuspend 03:45:20   Queue Resumed Queue resumed after SoftSuspend (0s) 04:05:48     Target Cancelled Target cancelled (6/6, GCVS NV Ori) due to cloud 04:05:52   Queue Paused Queue paused for SoftSuspend 04:05:55   Queue Resumed Queue resumed after SoftSuspend (0s) 04:05:57   Queue Completed Job Queue completed 04:06:00 Session Initiating Session initiating (2019-09-21) 04:06:05   Plan Requested Observing Plan requested from AstroPlan (1.10.5) 04:06:15   Plan Loaded Observing Plan loaded to queue (2019-09-21 V14 BEST PLAN, Plan ID: 370) 04:06:23   Camera1 Connected SBIG Camera Connected (set point -10°C) 04:06:25   Telescope Connected Telescope Connected (TheSky6) 04:06:35 Session Equilibration Session ready for dome & camera equilibration 04:06:37 Wait on Weather Waiting for acceptable weather conditions 04:06:45 Session Closing Session closing 04:06:50   Shutter Closed Shutter already closed (closed at 03:24, closing time 48s) 04:07:06   Dome Parked Dome parked (parking time 11s) 04:07:56   Telescope Parked Telescope parked (parking time 46s) 04:08:47 Session Housekeeping Housekeeping Started (Cleanup FITS, Create Fits Summary, Transfer Files) 04:09:14 Session Finished Session Finished

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Operational Issues (2019-09-21, S698)

• Critical Issues (0)
• Major Issues (1)
• Minor Issues (8)
  
• Continuous Improvement (8)

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Critical Issues

• None

Major Issues

• AstroPlan produced and executed an exceeding large number of generally very short plans for the night (11 in fact). Between the 01:18 and 01:53 the plans had as few as 1 target per plan (V Sge).  Each plan had to be separately generated, loaded and session reinitiated, leading to unnecessary extra session events, log messages, and reduced imaging time. It is suspected that target database is very depleted and there are few C3/P3 constraint objects above the horizon/above airmass limits for this particular LST time interval.  Need to increase depth and breadth of objects in the Targets database, especially those with C3/P3 constraints. (Targets DB).  Partly resolved 2019-09-22. (Targets DB). Airmass constraint for C1 and C2 targets relaxed to allow around 40 extra targets to be accessed. More fully resolved 2019-10-06 by fixing the issue that Regular Targets ('monitor') were being set to Completed which had the effect of deactivating them from following sessions. effectively Need to add more targets before next full moon.
  Resolved 2019-10-06  (Database & AstroMain). Still need ensure that targets database is well stocked with active targets.

Minor Issues

• AstroPlan produced 3 plans during the night that were seemingly not uploaded to the job queue and used.  3 plans were produced at 23:00, 00:53 and 01:18 that weren't used and instead other plans produced at the same times were used. ie they were 'rejected' or otherwise passed over for some unknown reason. This is the first time this has been seen. Interestingly their names where found to be EXECUTED PLAN but without the Session number suffix.  They each contained 2-5 targets marked as 'Scheduled' (ie never executed).  This is the first time that this has been seen. It may have something to do with  problem of having very short plans (14 generated in total for the night) or to introduction of new features relating to creating Plan/Session Charts
  
  Examing the code it is clear that the 3 plans get passed over (and new plans made in each case) because their names are saved to the database with the description EXECUTED PLAN, rather than BASE PLAN (which is the norm).    It appears to have happened because SessionEvents.LoadResultEvents wasn't using a local variable for PlanType and sets the global variable PlanType to EXECUTED after ScheduleBuilder had set it to BEST and before the Plan was saved to the database
  Fixed 2019-09-22  (AstroPlan 1.10.6/ AstroMain 3.11.8).    (Changes made:   local variable is renamed PlanTypeX  and some delays are inserted in AstroMain between operations that could cause a conflict back in AstroPlan)
   
• AstroPlan's Composite Plan Plotter unable to display 14 plans produced during the night. This is far in excess of the number it has previously been tested with, and may point to an array size limit.   Checking code  showing that the CP, Composite Plan, array was hard coded to a size of 10.  This was a reasonable to use but it didn't allow for cases where there is some issue that generates multiple plans in particular situations.
  Fixed 2019-09-22 (AstroPlan 1.10.6). Array size increased to 30
   
• Plan names/versions on Composite Plan chart are can being overposting when the length of plans are very short.
  Fixed 2019-09-22 (AstroPlan 1.10.6).
   
• Composite Plan charts display an incorrect Session Number. Charts are showing session number S685 regardless of actual session number corresponding to the date of the plans being plotted. (S685 corresponds to 2018-08-26, which is used as a hard code live session test date on Development Computer)
  Fixed 2019-09-22 (AstroPlan 1.10.6).
   
• A framework Centering Chart was made at start of session and saved to the Session log folder but wasn't copied to the Live Folder.  Issue closed as problem no longer occuring and is considered to have been resolved
  Closed 2020-05-11 . (AstroMain/AstroPlan)
   
• Latest Session webpage shows a formatting issue in contents after hidden elements are raised with ''block' feature. Problem only occurs with IPad Safari not on Windows Explorer 11.
  Fixed 2019-09-24 (Website). 
   
• Two points on Right Hand (Center) graph of Centering Charts with anomalously large N errors.  Code is correctly plotting the available data, the two points both have the larger N errors that are indicated by the plot. They show up as being anomalous as poor conditions allowed only 1 out of 4 locate images to link, so there was no chance for recentering improvements to show. One issue uncovered is that one of the two data points didn't link on 1st locate frame and therefore doesn't appear on the 'slew' graph.  This requires a small fix.
  Fixed 2019-09-22. (AstroMain 3.11.8)
   
• Plan End for Active Plan shown at Schedule.NightEnd rather than at the end time of the last observation in the plan
  >> Review/Modify code (AstroPlan) 

Continuous Improvement

• Investigate how many 'stranded' C1 constraint targets there are. These are targets which have a 1.5 airmass limit (C1) limit but have declinations which are too low to ever archieve this.  Airmass of <1.5 (with 1 hour tolerance around LST) requires a Declination  > 10 at my site.  Using Targets List form and using the SQL qualifying query  "ConstraintID = "C1" AND Dec2000<10" reveals 56 targets which are stranded and can't be scheduled.  Relaxing the C1 airmass limit to 2.5 requires a Declination of > -8.    This would still leave 22 targets stranded.   In addition there are 37 targets that are stranded by the C2 contraint with airmass limit of 3.0.  Probably need to have a constraint that was airmass<x or  LST within +/-y hour of target RA, in order to get target as high as possible. For the time being the C1 airmass limit will be reduced to 2.5, the C2 airmass limit relaxed to 3.5  and a CI item added for incorporating hour angle constraints
  Done 2019-09-22
   
• When extending the session with a new plan, it is appropriate to have a shorter initiating/equilbration process.
  This is so that Dome / Telescope / PHD2 etc don't have to be reconnected or at least affirmative messages are hidden.
  This was implemented by using a new Session State 'Continuing'
  Done 2019-10-07 (AstroMain 3.13.5). 
   
• Session's slew/centering performance chart to be renamed as CenteringChart.yyyyMMdd.png
  (instead of yyyy-MM-dd S00xxx CenteringChart.png). This is to simplify housekeeping/website records.
  Done 2019-09-22 (AstroMain 3.11.8)
   
• Add Colour Legend to Centering Chart, adjust thresholds and tie in with SU.AcceptablePointingError
  Done 2019-09-22 (AstroMain 3.11.8)
   
• Show the total MB uploaded since last New Session call on AstroPlan Main Form.
  Fixed 2019-09-22 (AstroPlan 1.10.6).
   
• Move the WriteSessionHeaderJs routine into a separate thread independant of the Obs.Manager main loop. Might make it part of a wider function independant of Job Queue and Obs.Manager
  Done 2019-09-25. (AstroMain 3.12)  New background processes ObsOverseer and ObsWorker.
    
• Extend target constraints to include option of an hour angle constraint (to allow inclusion of targets when they are at their highest in the sky). The hour angle of a planned target observation is now included in the AstroPlan's Schedule Builder.  It isn't used as a constraint, but is used to disable airmass contraint when hour angle in the range -2 to +2. This is to allow low Dec targets to be imaged when they are at their highest with out compromising airmass limits for higher Dec targets.
  Done 2024-10-08 (AstroPlan 1.42.2)
   
• Modify Plan Saver so that the EndTime of the last planned target is saved as the Plan's EndTime
  >> Review system implications of this change.   (Nov 2020 - need to check if this has since been resolved).

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