David's Astronomy Pages
Notes - Session 1409 (2026-03-19)

 
Bullet Session Aims & Highlights
 - Observing Result
 - Night Summary Plot
 - Session Event Log
Bullet Operational Issues
- Critical Issues (0),  Major Issues (0),  Minor Issues (2),  Small Defects (5),  Continuous Improvement (5)
- Figures (2)
   
Bullet Images from 2026-03-19  >>           
   
   

Session Aims & Highlights (2026-03-19)

Main aims

  1. Targets.  Acquire images of a selection of variable stars, nearby stars, comets & deep sky targets as allowed by sky conditions.
  2. ShCap Imaging/Processing.   Continue testing of AstroMain/AstroShCap routines and workflow including Siril scripts

 Equipment & Software

Highlights

Notes

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)
Note:  The NorthCam Star Count line is unreliable and should be ignored
(The AstroNorthCam 'Find' Star method is producing many false positives from clouds)
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Actual Weather vs Pre-Session Weather Forecast
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Session Event Log
Time     Event Detail
20:04:03 Session Monitoring AutoStart monitoring for Live Session opportunity between 20:04 & 04:23
20:04:04 Session AutoStarting Session autostarting (20:04)
20:04:11 Session Created Session Created (Live, 2026-03-19 S01409)
20:04:13   CCDSoft Restarting CCDSoft being restarted (to set AutoSave No.)
20:04:32   Scope Switched On Telescope Power has been switched on via UPB Switch
20:06:18   Services Started Observatory Services started
20:06:28 Observatory (Auto) Observatory placed in Fully-Automated Mode
20:06:30 Session Pending Session pending (2026-03-19)
20:06:32 Session Initiating Session initiating (2026-03-19)
20:06:54   Camera1 Connected SBIG Camera connected (Set point -20°C)
20:06:57   Plan Requested Observing Plan requested from AstroPlan (1.46.2)
20:07:28   Plan Loaded Observing Plan loaded to queue (PlanID: 1207)
20:08:09   Telescope Connected Telescope connected (TheSky6)
20:08:34 Session Equilibration Session ready to Open Dome
20:09:19   Dome Opened Dome opened (Opening time 45s, Zigbee 41s)
20:09:59 Session Running Session running
20:10:02   Queue Started Observing Queue started (27 targets selected)
20:10:09     Target Started (NrZen) Target started (Focus Field 8, HIP 39357)
20:10:22       Dome Unparked Dome unparked
20:15:00       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
20:17:04       Focusing Completed Foc1 AutoFocus Completed (Profile No 1, wide)
20:19:06       Focusing Completed Foc1 AutoFocus Completed (Profile No 1)
20:19:14       Focusing Started-Foc2 Foc2 Focusing Started (Secondary Scope, using ShCap)
20:21:03       Focusing Completed Foc2 AutoFocus Completed (Profile No 2, wide)
20:22:45       Focusing Completed Foc2 AutoFocus Completed (Profile No 2)
20:23:06     Target Completed (NrZen) Target completed (Focus Field 8, HIP 39357)
20:23:25     Target Started (1/27) Target started (1/27, C/2024 E1 (Wierzchos))
20:30:10       Focusing Skipped Foc1 focusing skipped - star is lost (TCF-LSI)
20:38:38     Target Completed Target completed (1/27, C/2024 E1 (Wierzchos))
20:38:42     Target Started (2/27) Target started (2/27, AT2026eva)
20:42:08       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
20:44:24       Focusing Completed Foc1 AutoFocus Completed (Profile No 3)
21:00:24     Target Completed Target completed (2/27, AT2026eva)
21:00:28     Target Started (3/27) Target started (3/27, UGC 622 w/AT2026epv)
21:05:16       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
21:07:24       Focusing Completed Foc1 AutoFocus Completed (Profile No 4)
21:23:23     Target Completed Target completed (3/27, UGC 622 w/AT2026epv)
21:23:27     Target Started (4/27) Target started (4/27, AT2026evo (CV))
21:28:06       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-LSI)
21:44:13     Target Completed Target completed (4/27, AT2026evo (CV))
21:44:37     Target Started (5/27) Target started (5/27, C/2022 N2 (PANSTARRS))
21:48:38       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
21:50:45       Focusing Completed Foc1 AutoFocus Completed (Profile No 5)
21:59:02     Target Completed Target completed (5/27, C/2022 N2 (PANSTARRS))
21:59:06     Target Started (6/28) Target started (6/28, M76, ToO). Using SharpCap
22:01:48       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
22:04:13       Focusing Completed Foc1 AutoFocus Completed (Profile No 6)
22:23:27       Camera1 Connected SBIG Camera connected (Set point -20°C)
22:23:30     Target Completed Target completed (6/28, M76, ToO)
22:23:32     Target Started (7/29) Target started (7/29, M108, ToO). Using SharpCap
22:28:06       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-LSI)
22:46:43       Camera1 Connected SBIG Camera connected (Set point -20°C)
22:46:45     Target Completed Target completed (7/29, M108, ToO)
22:46:47     Target Missed (8/29) Target's time slot was missed (8/29, 240P/NEAT)
22:46:49     Target Missed (9/29) Target's time slot was missed (9/29, GCVS SY Cnc)
22:46:51     Target Missed (10/29) Target's time slot was missed (10/29, PCG 1045+4931)
22:47:50     Target Started (11/29) Target started (11/29, PCG 0928+6347)
22:53:08       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-LSI)
23:09:18     Target Completed Target completed (11/29, PCG 0928+6347)
23:10:11     Target Started (12/29) Target started (12/29, GCVS RZ LMi)
23:14:07       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
23:16:12       Focusing Completed Foc1 AutoFocus Completed (Profile No 7)
23:21:25     Target Completed Target completed (12/29, GCVS RZ LMi)
23:21:48     Target Started (13/29) Target started (13/29, GCVS CN Leo)
23:25:47       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
23:27:56       Focusing Completed Foc1 AutoFocus Completed (Profile No 8)
23:35:28     Target Completed Target completed (13/29, GCVS CN Leo)
23:35:32     Target Started (14/29) Target started (14/29, 29P/Schwassmann-Wachmann)
23:39:39       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
23:42:00       Focusing Completed Foc1 AutoFocus Completed (Profile No 9)
23:53:45     Target Completed Target completed (14/29, 29P/Schwassmann-Wachmann)
23:53:50     Target Started (15/29) Target started (15/29, PCG 0922+2855)
23:57:06       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
23:59:42       Focusing Completed Foc1 AutoFocus Completed (Profile No 10)
00:15:43     Target Completed Target completed (15/29, PCG 0922+2855)
00:15:47     Target Started (16/29) Target started (16/29, M95). Using SharpCap
00:18:04       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
00:20:20       Focusing Completed Foc1 AutoFocus Completed (Profile No 11)
00:39:27       Camera1 Connected SBIG Camera connected (Set point -20°C)
00:39:29     Target Completed Target completed (16/29, M95)
00:43:28     Target Started (17/29) Target started (17/29, SHK 57)
00:46:42       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
00:48:53       Focusing Completed Foc1 AutoFocus Completed (Profile No 12)
01:04:51     Target Completed Target completed (17/29, SHK 57)
01:05:48     Target Started (18/29) Target started (18/29, IC 700 w/SN2025aico)
01:09:13       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
01:11:21       Focusing Completed Foc1 AutoFocus Completed (Profile No 13)
01:27:18     Target Completed Target completed (18/29, IC 700 w/SN2025aico)
01:27:48     Target Started (19/29) Target started (19/29, SHK 113)
01:31:30       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
01:33:49       Focusing Completed Foc1 AutoFocus Completed (Profile No 14)
01:49:45     Target Completed Target completed (19/29, SHK 113)
01:50:08     Target Started (20/29) Target started (20/29, SHK 55)
01:56:17       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
01:59:01       Focusing Completed Foc1 AutoFocus Completed (Profile No 15)
02:15:35     Target Completed Target completed (20/29, SHK 55)
02:15:39     Target Started (21/29) Target started (21/29, NGC 4914 w/SN2026fjc)
02:19:46       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
02:21:48       Focusing Completed Foc1 AutoFocus Completed (Profile No 16)
02:37:46     Target Completed Target completed (21/29, NGC 4914 w/SN2026fjc)
02:37:50     Target Started (22/29) Target started (22/29, T CrB)
02:41:23       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
02:43:31       Focusing Completed Foc1 AutoFocus Completed (Profile No 17)
02:47:50     Target Completed Target completed (22/29, T CrB)
02:47:54     Target Started (23/29) Target started (23/29, UGC 11058 w/SN2026ewd)
02:51:10       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
02:53:20       Focusing Completed Foc1 AutoFocus Completed (Profile No 18)
03:10:06     Target Completed Target completed (23/29, UGC 11058 w/SN2026ewd)
03:10:10     Target Started (24/29) Target started (24/29, M27). Using SharpCap
03:12:17       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
03:14:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 19)
03:20:18       Dome Unparked Dome unparked
03:25:45       Camera1 Connected SBIG Camera connected (Set point -20°C)
03:25:48     Target Completed Target completed (24/29, M27)
03:25:50     Target Started (25/29) Target started (25/29, GCVS BL Lac)
03:31:31       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-LSI)
03:35:43     Target Completed Target completed (25/29, GCVS BL Lac)
03:35:47     Target Started (26/29) Target started (26/29, NGC 7292 w/SN2026fov)
03:39:29       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-LSI)
03:55:37     Target Completed Target completed (26/29, NGC 7292 w/SN2026fov)
03:57:42     Target Started (27/29) Target started (27/29, NGC 6070 w/SN2026ejy)
04:01:33       Focusing Skipped Foc1 focusing skipped - star is lost (TCF-LSI)
04:17:42     Target Completed Target completed (27/29, NGC 6070 w/SN2026ejy)
04:20:02     Target Started (28/29) Target started (28/29, GCVS AM Her)
04:23:04       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
04:25:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 20)
04:31:27     Target Completed Target completed (28/29, GCVS AM Her)
04:31:43     Target Started (29/29) Target started (29/29, KIC 8462852)
04:35:10       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S)
04:38:02       Focusing Completed Foc1 AutoFocus Completed (Profile No 21)
04:42:03     Target Completed Target completed (29/29, KIC 8462852)
04:42:05   Queue Completed Job Queue completed
04:42:07 Session Closing Session closing
04:42:55   Dome Closed Dome closed (Closing time 49s, Zigbee 44s)
04:43:12   Dome Parked Dome parked (parking time 10s), Az: 90.0 deg
04:43:57   Telescope Parked Telescope parked (parking time 41s total)
04:44:21   Telescope State Handbox reads 'Scope parked Turn scope off.'
04:45:18   Telescope Switched Off Telescope Power has been switched off via UPB Switch.
04:46:42   Services Stopped Night Services stopped
04:46:45 Session Finishing Session Finishing started (Create Fits Summary, Transfer Files)
04:47:33     Dome (Find Park) Find Park started (Search Az 80.0 to 100.0°, Step 1.0°, Wide)
04:48:32     Dome Find Park found (Best Park Az 91.0°)
04:48:38     Dome (Find Park) Find Park started (Search Az 89.0 to 93.0°, Step 0.2°, Narrow)
04:49:25     Dome Find Park found (Best Park Az 90.8°)
04:49:31     Dome Dome has been synced at park position (Az 90.0°, Adjustment: -0.8°)
04:49:33   Dome Parked Dome parked
04:49:41   Dome Charging Dome is parked and re-charging Ok (18mA)
04:49:43 Session Finished Session Finished
 
Session Alerts & Alarms
Time     Type       Name Detail
04:49:41 Green Clear Dome Charging Dome is parked and re-charging Ok (18mA)
 

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Operational Issues (2026-03-19 S1409)

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Critical Issues

Major Issues

Minor Issues

Small Defects

Continuous Improvement

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Fig 1.  Camera 2 temperature graph from S1409 Session

The gaps in graph line correspond to periods when the camera has been released from PHD2 and is attached to SharpCap.

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Fig 2.  Jpg Picture of M76 taken with TS80/178MC and generated by AstroMain's ConvertZwoPngToJpg() routine

Fig 2a. Original runtime shown with North-Down orientation. This is due to a legacy operation that rotates the  source picture by 180°. This is hangover from earlier workflow where the source image generated by SharpCap was North-Down which requires rotating by 180° when making the JPG picture.  This is no longer appropriate for the current workflow where the source image is generated by Siril scripts which are already in North-Up orientation and don't need rotating by 180°.
Image

Fig 2b. New picture are removing the no longer appropriate rotate by 180° from the ConvertZwoPngToJpg() . The picture now honours the North-Up orientation of the Source File that is generated by Siril scripts.
Image

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