David's Astronomy Pages Notes - Session 840 (2020-12-20)

Notes (S839)

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Notes (S841)

	Session Aims & Highlights
	- Observing Result  - Night Summary Plot  - Session Event Log
	Operational Issues
	- Critical Issues (0),  Major Issues (0),  Minor Issues (0),  Continuous Improvement (0)
	Images from 2020-12-20 >>

Session Aims & Highlights (2020-12-20)

Main aims

1. Targets. Acquire images of a selection of variable stars, nearby stars, comets and deep sky targets as allowed by conditions.
2. Shutter. Ensure observcatoryu shutter is operating correctly following recent repair and design improvment.

Equipment & Software

• 12" LX200 and ST-10XME
• 80mm APO and ZWO ASI 178MC
• CCDApp2, TheSky6, CCDSoft5, PHD2,  DeviceHub 4.5.0.1, UPB 1.5 
• Pegasus UPB & Motor Focus, TCF-S
• SharpCap 3.2, PHD2  2.6.9
   
• AstroMain 3.32.15,  AstroGuard 1.4.6,   AstroPlan 1.18  AstroShCap 1.3.6, AstroVOE 1.5.2, AstroSN 1.1,  AstroProtect 1.4.1
  (AstroWeather 1.10.13, AstroAllSky 3.6)

Highlights

• Shutter System.  The Shutter system which had failed during the session operated successfully following its repair and design improvment. 

Summary Plots & Logs

Observing Plan

Observing Result

Dome & Scope Slewing Performance

Slew/Centering Performance

Guiding Performance

Sky Conditions (Locate Frames)

Chart unavailable for this session

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 (API data from darksky.net) Pre-Session Weather forecast showed clear interval in middle of evening (14-29% cloud cover) and later in night (10-39% cloud cover) patchy cloud conditions in first part of night (27-73% cloud cover) with minium tempertaure of 5 degC and wind up to 22 mph . In the event skies there were clear for much of the night, with cloudy intervals at 22:30 and 23:30 to 00:15 and thin cloud & poorer transparency gradually developing from 03:40 onwards

Session Event Log

Time     Event Detail 16:58:15 Session Monitoring AutoStart monitoring for Live Session opportunity starting between 16:58 & 06:35 16:58:16 Session AutoStarting Session autostarting (16:58) 16:58:47 Session Created Live Session Created (2020-12-20 S00840, ImageSaveNum: 840001) 16:58:49   Scope Switched On Telescope Power has been switched on via UPB Powerbox. 17:00:44   Services Started Observatory Services started 17:00:53 Observatory (Auto) Observatory placed in Fully-Automated Mode 17:00:57 Session Pending Session pending (2020-12-20) 17:00:59 Session Initiating Session initiating (2020-12-20) 17:01:01   Plan Requested Observing Plan requested from AstroPlan (1.18) 17:01:37   Plan Loaded Observing Plan loaded to queue (2020-12-20 V1 BEST PLAN, Plan ID: 575) 17:01:49   Camera1 Connected SBIG Camera Connected (set point -20°C) 17:01:55   Telescope Connected Telescope Connected (TheSky6) 17:02:05 Session Equilibration Session ready for dome & camera equilibration 17:03:42   Dome Opened Dome opened (opening time 45s) 17:03:58   Equilibration Started Dome Equilibration started 17:08:57   Equilibration Ended Dome Equilibration ended (5.0 mins total) 17:08:59 Session Running Session running 17:09:01   Queue Started Observing Queue started (44 targets selected) 17:10:05       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 17:12:55       Focusing Completed Foc1 AutoFocus Completed (Profile No 1) 17:14:46       Focusing Completed Foc1 AutoFocus Completed (Profile No 1) 17:14:48       Focusing Started-Foc2 Foc2 Focusing Started (Secondary Scope, using ShCap) 17:17:02       Focusing Completed Foc2 AutoFocus Completed (Profile No 2, wide) 17:18:49       Focusing Completed Foc2 AutoFocus Completed (Profile No 2) 17:19:05       Focusing Checked Foc2 Focusing Check Succeeded 17:20:57     Target Started (1/44) Target started (1/44, WDS GRB 34) 17:23:21       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 17:25:05       Focusing Completed Foc1 AutoFocus Completed (Profile No 3) 17:26:57     Target Completed Target completed (1/44, WDS GRB 34) 17:29:12     Target Started (2/44) Target started (2/44, UGC 678 w/AT2020abjq) 17:32:02       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 17:49:13     Target Completed Target completed (2/44, UGC 678 w/AT2020abjq) 17:51:04     Target Started (3/44) Target started (3/44, NGC 514 w/AT2020uxz) 17:53:55       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 17:55:50       Focusing Completed Foc1 AutoFocus Completed (Profile No 4) 18:06:18     Target Completed Target completed (3/44, NGC 514 w/AT2020uxz) 18:08:26     Target Started (4/44) Target started (4/44, GCVS SS Cyg) 18:11:06       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 18:12:57       Focusing Completed Foc1 AutoFocus Completed (Profile No 5) 18:16:34     Target Completed Target completed (4/44, GCVS SS Cyg) 18:23:37     Target Started (5/44) Target started (5/44, UGC 1161 w/SN2020acch) 18:25:58       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 18:28:04       Focusing Completed Foc1 AutoFocus Completed (Profile No 6) 18:43:37     Target Completed Target completed (5/44, UGC 1161 w/SN2020acch) 18:45:59     Target Started (6/44) Target started (6/44, GCVS U And) 18:47:49       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 18:49:30       Focusing Completed Foc1 AutoFocus Completed (Profile No 7) 18:59:18     Target Completed Target completed (6/44, GCVS U And) 19:00:05     Target Started (7/44) Target started (7/44, NGC 848) 19:00:16     Target Failed Target failed due to slew error (7/44, NGC 848) 19:22:27     Target Started (8/44) Target started (8/44, AT2020adfc) 19:25:17       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 19:27:26       Focusing Completed Foc1 AutoFocus Completed (Profile No 8) 19:33:07     Target Completed Target completed (8/44, AT2020adfc) 19:34:49     Target Started (9/44) Target started (9/44, AT2020acxk) 19:37:08       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 19:39:26       Focusing Completed Foc1 AutoFocus Completed (Profile No 9) 19:45:23     Target Completed Target completed (9/44, AT2020acxk) 19:47:11     Target Started (10/44) Target started (10/44, UGC1191A) 19:50:31       Focusing Skipped Foc1 focusing skipped - star is lost (TCF-S) 20:08:00     Target Completed Target completed (10/44, UGC1191A) 20:09:33     Target Started (11/44) Target started (11/44, AT2020adcx) 20:12:29       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:14:19       Focusing Completed Foc1 AutoFocus Completed (Profile No 10) 20:20:21     Target Completed Target completed (11/44, AT2020adcx) 20:21:55     Target Started (12/44) Target started (12/44, M31 w/AT2020abjr) 20:24:24       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:26:33       Focusing Completed Foc1 AutoFocus Completed (Profile No 11) 20:42:07     Target Completed Target completed (12/44, M31 w/AT2020abjr) 20:43:47     Target Started (13/44) Target started (13/44, SN 2020aagy) 20:45:35       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:47:38       Focusing Completed Foc1 AutoFocus Completed (Profile No 12) 21:03:32     Target Completed Target completed (13/44, SN 2020aagy) 21:05:39     Target Started (14/44) Target started (14/44, UGC 2069) 21:07:47       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:09:43       Focusing Completed Foc1 AutoFocus Completed (Profile No 13) 21:26:00     Target Completed Target completed (14/44, UGC 2069) 21:28:01     Target Started (15/44) Target started (15/44, NGC 7640) 21:30:36       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:32:51       Focusing Completed Foc1 AutoFocus Completed (Profile No 14) 21:52:09     Target Completed Target completed (15/44, NGC 7640) 21:53:25     Target Started (16/44) Target started (16/44, PGC 3792) 21:55:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:57:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 15) 22:13:48     Target Completed Target completed (16/44, PGC 3792) 22:15:47     Target Started (17/44) Target started (17/44, AT2020ablw) 22:18:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:21:23       Focusing Completed Foc1 AutoFocus Completed (Profile No 16) 22:28:27   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (reducing clarity) 22:29:32 Critical Cloud Alert Critical Cloud Alert (Obs.Manager will close the Shutter) 22:29:34   HardSuspend Called Hard Suspend is called due to Critical Conditions (cloud) 22:29:36     Target Aborted (17/44) Target aborted (17/44, AT2020ablw) due to cloud 22:29:38   Queue Paused Queue paused for Session Suspension 22:29:40 Session Suspended Session suspended 22:30:27   Dome Closed Dome closed (closing time 49s) 22:30:39     Target Cancelled Target cancelled (17/44, AT2020ablw) due to cloud 22:42:33 Session Resuming Session resuming 22:43:18   Dome Opened Dome opened (opening time 45s) 22:43:20 Session Running Session running 22:43:22   Queue Resumed Observing Queue resumed 22:43:24     Target Started (18/44) Target started (18/44, VV 94) 22:59:37     Target Completed Target partially completed (18/44, VV 94) 22:59:39     Target Started (19/44) Target started (19/44, AT2020abap) 23:01:41       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:03:43       Focusing Completed Foc1 AutoFocus Completed (Profile No 17) 23:12:17     Target Completed Target completed (19/44, AT2020abap) 23:12:19     Target Started (20/44) Target started (20/44, C/2020 M3 (Atlas)) 23:14:15       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:16:18       Focusing Completed Foc1 AutoFocus Completed (Profile No 18) 23:22:03     Target Completed Target completed (20/44, C/2020 M3 (Atlas)) 23:22:05     Target Started (21/44) Target started (21/44, GCVS RR Tau) 23:24:06       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:25:58       Focusing Completed Foc1 AutoFocus Completed (Profile No 19) 23:29:18   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 23:31:57     Target Completed Target completed (21/44, GCVS RR Tau) 23:31:59   Queue Paused Queue paused for Session Suspension 23:32:01 Session Suspended Session suspended 23:32:48   Dome Closed Dome closed (closing time 50s) 23:37:49     Target Cancelled Target cancelled (22/45, AT2020ablw, ToO) due to cloud 23:51:24     Target Cancelled Target cancelled (23/45, GCVS CM Tau) due to cloud 00:08:01 Session Resuming Session resuming 00:08:46   Dome Opened Dome opened (opening time 45s) 00:08:48 Session Running Session running 00:08:50     Target Started (24/45) Target started (24/45, UGC 4148) 00:08:52   Queue Resumed Observing Queue resumed 00:18:38     Target Completed Target partially completed (24/45, UGC 4148) 00:18:40     Target Started (25/45) Target started (25/45, GCVS SY Cnc) 00:20:57       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:23:03       Focusing Completed Foc1 AutoFocus Completed (Profile No 20) 00:26:05     Target Completed Target completed (25/45, GCVS SY Cnc) 00:26:07     Target Started (26/45) Target started (26/45, AT2020abgp) 00:29:22       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 00:46:36     Target Completed Target completed (26/45, AT2020abgp) 00:46:39     Target Started (27/45) Target started (27/45, AT2020aavs) 00:49:34       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 01:07:28     Target Completed Target completed (27/45, AT2020aavs) 01:08:10     Target Started (28/45) Target started (28/45, GCVS U Mon) 01:10:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:12:33       Focusing Completed Foc1 AutoFocus Completed (Profile No 21) 01:18:16     Target Completed Target completed (28/45, GCVS U Mon) 01:18:52     Target Started (29/45) Target started (29/45, UGCA 188) 01:21:11       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:23:05       Focusing Completed Foc1 AutoFocus Completed (Profile No 22) 01:38:36     Target Completed Target completed (29/45, UGCA 188) 01:41:14     Target Started (30/45) Target started (30/45, UGC 4043) 01:43:16       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 02:00:38     Target Completed Target completed (30/45, UGC 4043) 02:03:36     Target Started (31/45) Target started (31/45, PGC 23319) 02:05:20       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:07:12       Focusing Completed Foc1 AutoFocus Completed (Profile No 23) 02:26:18     Target Completed Target completed (31/45, PGC 23319) 02:29:00     Target Started (32/45) Target started (32/45, PGC 25871) 02:30:43       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 02:48:18     Target Completed Target completed (32/45, PGC 25871) 02:51:22     Target Started (33/45) Target started (33/45, UGCA 337) 02:54:36       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 03:11:23     Target Completed Target completed (33/45, UGCA 337) 03:13:44     Target Started (34/45) Target started (34/45, NGC 3697 w/AT2020aavb) 03:15:55       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 03:17:57       Focusing Completed Foc1 AutoFocus Completed (Profile No 24) 03:33:29     Target Completed Target completed (34/45, NGC 3697 w/AT2020aavb) 03:36:06     Target Started (35/45) Target started (35/45, GCVS AM CVn) 03:38:19       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 03:38:36   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 03:40:05       Focusing Completed Foc1 AutoFocus Completed (Profile No 25) 03:43:03     Target Completed Target completed (35/45, GCVS AM CVn) 03:43:05   Queue Paused Queue paused for Session Suspension 03:43:07 Session Suspended Session suspended 03:43:52   Dome Closed Dome closed (closing time 45s) 03:44:54     Target Cancelled Target cancelled (35/45, GCVS AM CVn) due to cloud 03:54:57     Target Cancelled Target cancelled (36/45, GCVS ER UMa) due to cloud 04:15:19     Target Cancelled Target cancelled (37/45, UGCA 211) due to cloud 04:34:11 Session Resuming Session resuming 04:34:56   Dome Opened Dome opened (opening time 45s) 04:34:58 Session Running Session running 04:35:00     Target Started (38/45) Target started (38/45, UGC 6791) 04:35:02   Queue Resumed Observing Queue resumed 04:39:07   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 04:42:12   SoftSuspend Cancelled Soft Suspend is cancelled due to Improved Conditions 04:45:33     Target Completed Target partially completed (38/45, UGC 6791) 04:45:36     Target Started (39/45) Target started (39/45, UGC 9340 w/SN2020acac) 04:47:57       Focusing Skipped Foc1 focusing skipped - unable to find a star (TCF-S) 04:52:33   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 04:56:13   SoftSuspend Cancelled Soft Suspend is cancelled due to Improved Conditions 05:05:14     Target Completed Target completed (39/45, UGC 9340 w/SN2020acac) 05:05:16     Target Started (40/45) Target started (40/45, UGC 9625 w/SN2020acai) 05:05:44   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 05:08:09       Focusing Skipped Foc1 focusing skipped - unable to find a star (TCF-S) 05:23:41     Target Completed Target completed (40/45, UGC 9625 w/SN2020acai) 05:23:43   Queue Paused Queue paused for Session Suspension 05:23:45 Session Suspended Session suspended 05:24:26   Dome Closed Dome closed (closing time 45s) 05:44:48     Target Cancelled Target cancelled (41/45, NGC 3664) due to cloud 06:07:09     Target Cancelled Target cancelled (42/45, NGC 4277 w/SN2020ftl) due to cloud 06:23:46   Camera1 SetPoint -15°C SBIG Camera Set Point Temperature Updated (new set point -15°C) 06:29:01     Target Cancelled Target cancelled (43/45, NGC 4454 w/SN2020abgq) due to cloud 06:50:53     Target Cancelled Target cancelled (44/45, NGC 5331 w/AT2020abir) due to cloud 07:12:19     Target Cancelled Target cancelled (45/45, GCVS R CrB) due to other condition 07:12:24   Queue Completed Job Queue completed 07:12:26 Session Closing Session closing 07:12:31   Dome Closed Dome already closed (closed at 05:24, closing time 45s) 07:12:57   Dome Parked Dome parked (parking time 18s), Az: 90.1 deg 07:13:39   Telescope Parked Telescope parked (parking time 34s) 07:14:09   Telescope Switched Off Telescope Power has been switched off via UPB Switch. 07:14:58   Services Stopped Night Services stopped 07:15:00 Session Housekeeping Housekeeping Started (Cleanup FITS, Create Fits Summary, Transfer Files) 07:15:21 Session Finished Session Finished

Session Alerts

Time     Alert Detail 20:44:37 Dome Discrepency Difference between Telescope Az and Dome Az is > 8 deg (SN 2020aagy) 01:42:18 Dome Discrepency Difference between Telescope Az and Dome Az is > 8 deg (UGC 4043)

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Operational Issues (2020-12-20 S840)

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

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Critical Issues

• None

Major Issues

• None

Minor Issues

• None

Continuous Improvement

• None

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