David's Astronomy Pages Notes - Session 1341 (2025-07-11)

Notes (S1340)

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Notes (S1342)

	Session Aims & Highlights
	- Observing Result  - Night Summary Plot  - Session Event Log
	Operational Issues
	- Critical Issues (0),  Major Issues (0),  Minor Issues (5),  Small Defects (2),  Continuous Improvement (8)
	- Figures (6)
	Images from 2025-07-11  >>
	2025-07-13
	New Powerbox - Pegasus Astro UPB V3

Session Aims & Highlights (2025-07-11)

Main aims

1. Targets.  Acquire images of a selection of variable stars, nearby stars, comets & deep sky targets as allowed by sky conditions and the short summer night.
2. CCD Camera. Test if major CCD Camera issues during recent have been resolved or not

 Equipment & Software

• 12" LX200 and ST-10XME
• 80mm APO and ZWO ASI 178MC
• TheSky6, CCDSoft5, DeviceHub 7.0.3 RC3.4694, MeadeGeneric 1.3.12.522 , UPB 1.5,  Pulsar Dome Firmware 1.51 & Driver 6.3.10
• Pegasus UPB & Motor Focus, TCF-S 6.0.6
• SharpCap 3.2, PHD2  2.6.13, Siril 1.0.6, deCONZ 1.18.2, ASCOM 7.0.3 RC3
• [ DomeLink 1.0 / 1.1 - not used ]
   
• AstroMain 3.75.12,  AstroPlan 1.43.14, AstroShCap 1.3.15, AstroGuard 1.11  (any new items or versions in bold)
  AstroMag 1.5.2, AstroVOE 1.15.1,  AstroSN 1.14,  AstroProtect 1.10.6,  AstroMove 1.16.1
  AstroWeather 1.27.9, AstroAllSky 3.24.4,  AstroObsCam 1.11.4 (not 1.11.5), AstroNorthCam 1.5.3, AstroLaunch 1.13.1

Highlights

• Targets.  10/10 planned target were completed. 
• CCD Camera. There were a number of issues with the CCDSoft / CCDCamera during the first part of the session, but were automatically resolved.
•  Dome. There was no issues opening/closing the shutter during the session. Dome closed and parked at end of session ok.

Notes

Summary Plots & Logs

Observing Plan

Observing Result

Dome & Scope Slewing Performance

Slew/Centering Performance

Guiding Performance

Sky Conditions (Locate Frames)

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)

Actual Weather vs Pre-Session Weather Forecast

Session Event Log

Time     Event Detail 23:04:29 Session Monitoring AutoStart monitoring for Live Session opportunity between 23:14 & 02:03 23:04:29   AutoStart Waiting AutoStart waiting till earliest start time at 23:14 23:14:55 Session AutoStarting Session autostarting (23:14) 23:15:16   CCDSoft Restarting CCDSoft being restarted (to set AutoSave No.) 23:15:44   Camera1 Connected SBIG Camera connected (Set point -10°C) 23:15:47 Session Created Session Created (Live, 2025-07-11 S01341, ImageSaveNum: 1341001) 23:15:52   Scope Switched On Telescope Power has been switched on via UPB Switch 23:16:46   CcdCamera Frozen CcdCamera appears to be frozen at around 23:16 in section 'GetProperty / Temperature' 23:17:54   Services Started Observatory Services started 23:18:03   CCDSoft Restarting CCDSoft being restarted (attempt to fix frozen CcdCamera) 23:18:11   SBIG Camera Reset SBIG Camera being power-cycled 23:19:12   Camera1 Connected SBIG Camera connected (Set point -10°C) 23:19:15 Observatory (Auto) Observatory placed in Fully-Automated Mode 23:19:16 Session Pending Session pending (2025-07-11) 23:19:18 Session Initiating Session initiating (2025-07-11) 23:19:27   Camera1 Connected SBIG Camera connected (Set point -5°C) 23:19:34   Plan Requested Observing Plan requested from AstroPlan (1.43.14) 23:20:31   CcdCamera Frozen CcdCamera appears to be frozen at around 23:20 in section 'GetProperty / FilterIndexZeroBased' 23:20:49   Plan Loaded Observing Plan loaded to queue (Plan ID: 1126) 23:21:03   CCDSoft Restarting CCDSoft being restarted (attempt to fix frozen CcdCamera) 23:21:11   SBIG Camera Reset SBIG Camera being power-cycled 23:22:12   Camera1 Connected SBIG Camera connected (Set point -5°C) 23:22:21   Telescope Connected Telescope connected (TheSky6) 23:22:46 Session Equilibration Session ready to Open Dome 23:31:17   Dome Opened Dome opened (Opening time 45s, Zigbee 40s) 23:31:33   Equilibration Started Dome Equilibration started 23:36:28   Equilibration Skipped Dome Equilibration skipped by user 23:36:30 Session Running Session running 23:36:33   Queue Started Observing Queue started (10 targets selected) 23:36:35     Target Started (NrZen) Target started (Focus Field 18, HIP 88232) 23:36:48       Dome Unparked Dome unparked 23:40:06       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:43:02       Focusing Completed Foc1 AutoFocus Completed (Profile No 1, wide) 23:44:02       SBIG Camera Take Image failed (Command timed-out) 23:44:04       CCDSoft Restarting CCDSoft being restarted (attempt to fix Camera Exception) 23:44:13       SBIG Camera Reset SBIG Camera being power-cycled 23:45:14       Camera1 Connected SBIG Camera connected (Set point -5°C) 23:45:20       SBIG Camera Take Image successfully completed (earlier flags are reset) 23:46:34       SBIG Camera Take Image failed (Command timed-out) 23:46:36       CCDSoft Restarting CCDSoft being restarted (attempt to fix frozen CcdCamera) 23:46:44       SBIG Camera Reset SBIG Camera being power-cycled 23:47:45       Camera1 Connected SBIG Camera connected (Set point -5°C) 23:47:50       SBIG Camera Take Image successfully completed (earlier flags are reset) 23:48:34       Focusing Completed Foc1 AutoFocus Completed (Profile No 1) 23:48:37       Focusing Started-Foc2 Foc2 Focusing Started (Secondary Scope, using ShCap) 23:50:37       Focusing Completed Foc2 AutoFocus Completed (Profile No 2, wide) 23:52:17       Focusing Completed Foc2 AutoFocus Completed (Profile No 2) 23:52:33     Target Completed (NrZen) Target completed (Focus Field 18, HIP 88232) 23:52:37     Target Started (1/10) Target started (1/10, UGC 10058 w/SN2025gvs) 23:56:23       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:59:10       Focusing Completed Foc1 AutoFocus Completed (Profile No 3) 00:15:55     Target Completed Target completed (1/10, UGC 10058 w/SN2025gvs) 00:15:59     Target Started (2/10) Target started (2/10, T CrB) 00:24:54     Target Completed Target completed (2/10, T CrB) 00:24:58     Target Started (3/10) Target started (3/10, SN 2024aeey) 00:28:40       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:31:48       Focusing Completed Foc1 AutoFocus Completed (Profile No 4) 00:47:49     Target Completed Target completed (3/10, SN 2024aeey) 00:47:53     Target Started (4/10) Target started (4/10, AT2024wys (CV)) 00:52:42       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 00:55:06       Focusing Completed Foc1 AutoFocus Completed (Profile No 5) 00:58:51     Target Completed Target completed (4/10, AT2024wys (CV)) 00:58:56     Target Started (5/10) Target started (5/10, GCVS BL Lac) 01:03:00       SBIG Camera Take Image failed (Command timed-out) 01:03:02       CCDSoft Restarting CCDSoft being restarted (attempt to fix frozen CcdCamera) 01:03:10       SBIG Camera Reset SBIG Camera being power-cycled 01:04:12       Camera1 Connected SBIG Camera connected (Set point -10°C) 01:05:41       SBIG Camera Take Image successfully completed (earlier flags are reset) 01:08:08     Target Completed Target completed (5/10, GCVS BL Lac) 01:08:12     Target Started (6/10) Target started (6/10, UGC 12793 w/AT2025kjx) 01:12:34       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:15:25       Focusing Completed Foc1 AutoFocus Completed (Profile No 6) 01:31:52     Target Completed Target completed (6/10, UGC 12793 w/AT2025kjx) 01:31:56     Target Started (7/10) Target started (7/10, UGC 386 w/SN2025kno) 01:35:28       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:37:51       Focusing Completed Foc1 AutoFocus Completed (Profile No 7) 01:54:09     Target Completed Target completed (7/10, UGC 386 w/SN2025kno) 01:54:13     Target Started (8/10) Target started (8/10, AT2025kej (CV)) 01:58:13       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:00:38       Focusing Completed Foc1 AutoFocus Completed (Profile No 8) 02:09:10     Target Completed Target completed (8/10, AT2025kej (CV)) 02:09:14     Target Started (9/10) Target started (9/10, AT2023acib) 02:21:32     Target Completed Target completed (9/10, AT2023acib) 02:21:36     Target Started (10/10) Target started (10/10, KIC 8462852) 02:25:04       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:27:48       Focusing Completed Foc1 AutoFocus Completed (Profile No 9) 02:31:49     Target Completed Target completed (10/10, KIC 8462852) 02:31:51   Queue Completed Job Queue completed 02:31:53 Session Closing Session closing 02:32:41   Dome Closed Dome closed (Closing time 45s, Zigbee 42s) 02:33:40   Dome Parked Dome parked (parking time 52s), Az: 90.0 deg 02:34:24   Telescope Parked Telescope parked (parking time 42s total) 02:34:54   Telescope State Handbox reads 'Scope parked Turn scope off.' 02:35:16   Telescope Switched Off Telescope Power has been switched off via UPB Switch. 02:36:43   Services Stopped Night Services stopped 02:36:46 Session Finishing Session Finishing started (Create Fits Summary, Transfer Files) 02:37:03     Dome (Find Park) Find Park started (Search Az 80.0 to 100.0°, Step 1.0°, Wide) 02:37:48     Dome Find Park found (Best Park Az 89.0°) 02:37:54     Dome (Find Park) Find Park started (Search Az 87.0 to 91.0°, Step 0.2°, Narrow) 02:38:38     Dome Find Park found (Best Park Az 88.7°) 02:38:43     Dome Dome has been synced at park position (Az 90.0°, Adjustment: +1.3°) 02:38:45   Dome Parked Dome parked 02:39:46   Dome Charging Dome is parked and re-charging Ok (49mA) 02:39:48 Session Finished Session Finished

Session Alerts & Alarms

Time     Type       Name Detail 23:18:01 Red Alert CcdCamera CcdCamera appears to be frozen (last cycle at 23:16:46) in section 'GetProperty / Temperature' 23:19:13 Green Clear CcdCamera SBIG Camera has been successfully restarted 23:21:01 Red Alert CcdCamera CcdCamera appears to be frozen (last cycle at 23:20:31) in section 'GetProperty / FilterIndexZeroBased' 23:22:12 Green Clear CcdCamera SBIG Camera has been successfully restarted 23:44:02 Red Alert SBIG Camera Alert Take Image failed (Command timed-out) 23:45:20 Green Clear SBIG Camera Take Image successfully completed (earlier flags are reset) 23:46:34 Red Alert SBIG Camera Alert Take Image failed (Command timed-out) 23:47:50 Green Clear SBIG Camera Take Image successfully completed (earlier flags are reset) 01:03:00 Red Alert SBIG Camera Alert Take Image failed (Command timed-out) 01:05:41 Green Clear SBIG Camera Take Image successfully completed (earlier flags are reset) 02:39:46 Green Clear Dome Charging Dome is parked and re-charging Ok (49mA)

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Operational Issues (2025-07-11, S1341)

• Critical Issues (0)
• Major Issues (0)
• Minor Issues (5)
• Small Defects (2)
• Continuous Improvement (9)
• Figures (6)
  

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Critical Issues

• None

Major Issues

• None

Minor Issues

• Several failures preparing for or taking CCD Images using SBIG Camera/CcdCamera (23:18, 23:21, 23:44, 23:46 & 01:03). CcdCamera reported frozen at 23:18:01 & 23:21:01. Focus frames reported to have failed / timed-out at 23:44:02, 23:46:34 & 01:03:00. All failures were automatically resolved by ObsOverseer or JobExecutor (TakeImageAsync)
   Known onngoing issue  2025-07-11 (AstroMain) 
   
• A TakeImage operation was initiated whilst RestartCCDSoft () was running (01:03). A 3s Focus Locate Frame was attempted for Target 5/10 (GCVS BL Lac)  at 01:02 but failed due to an Image TimeOut / Frozen CCDCamera and a RestartCCDSoft() operation was called at 01:03:02, which successful connected to CCDSoft Camera at 01:04:10 - 01:04:12.  However the reporting of the RestartCCDSoft with messages associated with taking a further 3s Image which began whilst CCDSoft / SBIG Camera were being stopped.  CCDCamera calls to Get / Set Camera properties inevitably failed (with timeouts after 2s). TaekImageAsync() routine operated correctly and cancelled the 'TakeImage'  with the message  "Cancelling Image as specifications have been lost". The operation to take a new image whilst CCDSoft/Camera was being restarted is clearly incorrect and that there wasn't a check of the bRestartingCCDSoft flag and associated wait loop until the flag became False. Fixed in AstroMain 3.75.13/
   Fixed 2025-07-12 (AstroMain 3.75.13)
   
• NorthCam Line traces shown in Keogram & NightSummary & DaySummaryPlots have shifted (2025-07-11 23:25). The vertical positioning of NorthCam line traces have instantaneously shifted at around 23:25 (see.Fig 1).  In case there was some error or glitch in a particular variable associated with cropping or positioning the line traces after 23:25 the two programs involved : AstroNorthCam (that produces the lines traces or  AstroAllSky (that integrates the line traces into keogram & SummaryPlots) were both restarted. But this didn't resolve the problem. Examaining NorthCam images shows that the view from the camera underwent a noticeable downward shift of around 8-9°  between the frame at  23:25:21 and the frame at 23:25:58, with the frame in between (23:25:40) capturing the actual movement of the camera. Besides the vertical shift there is also a smaller clockwise rotation of the camera. The shift is consistant with a downward force on the camera, that would be consistent with a heavy bird landing on the end of the camera which is considered to be the most likely cuprit, but a cat moving along the fence line & jumping onto the camera or the action of a human hand tampering with the camera would be other possibilities. A ghost image of an approaching bird that is faintly captured in the individually stacked frames confirms that a bird is indeed the cuplrit. the culprit.  The frame at 23:25:40 suggests something is covering the upper right part of the image, with something, possibly the feathers of a bird wing or tail,  covering the middle and right hand part of the view. The seemingly better lit view of house in bottom right corner of image is likely due to automated image brighteness adjustment by the Taop camera. The camera's orientation (vertical and rotational) needs to be adjusted and its mounting knobs tightened up. Camera orientation fixed on 2025-07-13.  In an attempt to stop the problem occuring again improvised bird spikes were attached to the top of the camera mast (see Fig 4)
   Fixed  2025-07-13 (Tapo NorthCam Camera) 
   
• Anomalous shifts in Z axis magnetometer readings (Pre-Session, 13:00 to 15:00). At 2025-07-11 13:00 UT there was a +110 nT shift in Z readings., following by a -200 nT shift at 14:15.  There were further,  though smaller, shifts in Z readings at 14:30 and 15:00 (-90 nT & +60 nT respectively). These occurred at a point 12 days after the SAM III system was restarted with Remedial Fix2b in operation. There was no anomalies with the readings from the X & Y sensors (see Remedial Fix 2 / 2b Update 2025-07-11 ).   Closed after review and installation of Remedial Fix 2c (47 ohm resistor).
   Closed after review 2025-07-13 (SAM III)
   
• Anomalous shifts in Z axis magnetometer readings (2025-07-12). At 2025-07-12 12:10 UT there was a -30 nT shift in X readings.  This  occurred at a point 13 days after the SAM III system was restarted with Remedial Fix2b in operation.  There was no associated anomalies with Y & Z readings.
  (see Remedial Fix 2 / 2b Update 2025-07-12 ).   Closed after review and installation of Remedial Fix 2c (47 ohm resistor).
   Closed after review 2025-07-13 (SAM III)

Small Defects

• UPB V3 Humidity value isn't being output to session's (monitor).dat file. Due to issues with Humidity Sensor with UPB V1 box a checkbox was added to AstroMain to allow the Humidity values to be disabled and replaced by vcNull (-99). AstroMain 3.76 modified so that the Humidty value is used when using a UPB V3 box (controlled by the value of cboxUseUPB_V3.checked) . it was noticed that regardless of the order in which the 3 drivers (Focuser, Switch * ObservingConditons) are disconnected an unhandled exception is generated in Unity Server when the final driver is disconnected (see Fig 5).  Issue has been passed to Pegasus Astro Support (2025-07-13)
   Fixed 2025-07-14 (AstroMag 3.76)
   
• Just-in-Time Debugger Dialog appears due to unhandled UnityServer exception after closing on ASCOM Unity Drivers. Whilst testing AstroMain 3.75.13 and new UPB V3 box it was noticed that regardless of the order in which the 3 drivers (Focuser, Switch * ObservingConditons) are disconnected an unhandled exception is generated in Unity Server when the final driver is disconnected (see Fig 5). Same issue occurs when closing PowerBox service. Issue has been passed to Pegasus Astro Support by email (2025-07-13) under request under request #8151 so they can investigate and work towards a fix.  A separate Continuous Improvement ticket has been raised that adds a workaround to Powerbox.Disconnect () routine that closes annoying appearance of JIT dialog. It will be interesting to see if this issue is fixed in Unity Platform 3 (which is due to be released shortly, Dec 2025)
  Under investigation by Pegasus Astro team 2025-07-13  (Pegaus Astro Unity, Pegusus Astro Support)

Continuous Improvement

• Install Pegasus Unity Platform on Observatory Computer and perfom test connection with new UPB V3 box. Pegasus Unity Platform (v2.10) was installed on the Observatory Computer on 2025-07-11 and temporarily connected to new UPB V3 Box. The later was upgraded to v1.5 firmware (from it pre-installed v1.4 firmware).  Seemed to be working ok, but there are a few queries with regard to ASCOM drivers and relationship between ASCOM Switch Numbers and the various outputs/ports on the UPB V3 box. (see Notes - New PowerBox - Pegasus Astro UPB v3, 2025-07-13)
   Done 2025-07-11 (Pegasus Unity Plaform, UPB V3)
   
• Send UPB V3 queries through to Pegasus Astro Support. After installing Unity Platform and making a test connection to new UPB V3 box there are a few queries with regard to ASCOM drivers and the relationship between ASCOM Switch Numbers and the various outputs/ports on the UPB V3 box.  Email with queries sent to Support 'at' Pegasus Astro on 2025-07-12.  Two of three queries were actually answered by daytime tests using the connected UPB V3 box .
   Done 2025-07-12 (Pegasus Unity Plaform, UPB V3)
   
• Modify AstroLaunch to be able to launch 'Pegasus Unity' when 'Use UPB V3' is selected. As an interim program feature whilst the operational UPB (Powerbox) is being swapped from UPB V1 to UPB V3 it is proposed to launch & monitor Pegasus Unity (Peg.UI.exe) when a new checkbox 'Use UPB V3' is selected (default is use existing UPB.exe).  Added new routine Powerbox.AssignSwitchNumbers() to set variables to point to the respective Switch Number dependant on the UPB version (1 or 3). Also added/modified buttons and routines on 'Main Scope/ASCOM Testing' tab to help test/validate use of UPB V3.  (see Notes - New PowerBox - Pegasus Astro UPB v3, 2025-07-13)
   Done  2025-07-12 (AstroMain 3.75.13)
   
• Modify AstroMain to be able to launch 'Pegasus Unity' when 'Use UPB V3' is selected. As an interim program feature whilst the operational UPB (Powerbox) is being swapped from UPB V1 to UPB V3 it is proposed to be able to launch Pegasus Unity (Peg.UI.exe) when a new checkbox 'Use UPB V3'  (on More/Cam2 tab) is selected (default is use existing UPB.exe / Powerbox).
   Done  2025-07-12 (AstroLaunch  1.13.4)
   
• Modify AstroMain to be able to set Switches for 'UPB V3'. In AstroMain 3.75.12 and earlier versions the ASCOM Switch numbers for LX200, TCF-S, Dew1 and Dew2 are defined by Enum Switch. However to support the transfer from UPB V1 to UPB V3 environment, it is neccessary to use new  variables (cPowerSwitchLX200,  cPowerSwitchTCF, cSwitchDew1  & cSwitchDew2) instead which are assigned by call to Powerbox.AssignSwitchNumbers() dependant on the state of the checkbox objConsole.cboxUseUPB_V3. Implemented in AstroMain 3.76.
   Done  2025-07-12 (AstroMain  3.76)
   
• Test connection to new UPB V3 box from ASCOM.  After installing Unity Platform and making a test connection to new UPB V3 box on 2025-07-11 the next step is to demonstrate connectivity to UPB box from ASCOM and validate i) operation of Power outputs using ASCOM Switch, ii) access to UPB Temperature/Humidity values using ASCOM.EnvironmentalConditons and iii) operation of TS80 Telescope's Pegasus Focuser using ASCOM.Focuser.  This will be somewhat difficult with the cabling currently in place for the UPB V1 box (including cables to Pegasus Motor Focus).  This likely requires setting up a test version of AstroMain that can switch between UPB V1 and UPB V3 control, and would benefit from an update to AstroLaunch.
   Done  2025-07-14 (UPB V3,  ASCOM)
   
• Replace 330 ohm resistor used to ground the unused wires on the Magnetometer cables with a 50 ohm resistor. Remedial Fix 2 to Geomagnetic Station grounded unused wires via a 1 M ohm resistor, but didn't produce much improvement  with significant spikes or shifts in readings occuring  within a 5 day period (see Geomagnetic Station -  Remedial Fix 2, ground unused wires (2025-05-22)).  Remedial fix 2b grounded unused wires via a 330 ohm resistor and produced some improvement (see  Geomagnetic Station -  Remedial Fix 2b (2025-06-29)) but shifts in Y and Z reading still occured over a 12-14 day period.  Proposal is to use of a resistor with a lower resistance. Implemented 2025-07-13 using a 50hm resistor and then run the system for a further 14 day period (see Remedial Fix 2c (47 ohm resistor)).
   Done 2025-07-13 (SAM III system)
   
• Create new AstroMain routine that check for presence of 'SBIG USB Camera With Firmware'.  Problems with SBIG Camera can be pre-empted or diagnosed by checking that 'SBIG USB Devices'  and 'SBIG USB Camera With Firmware' names are listed in Windows DeviceManager.  If the items are not present, a connection attempt will inevitably fail. Code for searching through DeviceManager suggested by CoPillot listed in Fig 6.  This was adapted into a new function 'IsSbigUsbCameraDeviceOk(Status)'  in AstroMain (3.76) that returns True is 'SBIG USB Camera With Firmware' is listed in Device Manager and has the status "OK".  It was necessary to not only add  ' "Imports System.Management' , but goto  'Add > Reference...' and in the resulting Reference Manager, expand Assemblies > Framework and Tick System.Management.  A new button / routine 'btnCheckSbigUsbCamera_Click()' has also been added to the 'More/Tests&Logs' Tab in order to access the new function.
   Done 2025-07-16 (AstroMain 3.76, SBIG Camera)
   
• Add a workaround to Just-in-Time Debugger Dialog each time Powerbox is disconnected. Due to an unhandled exception in the Pegusus UnityServer that occurs everytime the final ASCOM client is disconnected, a JIT Debugging Dialog / Chooser appears. Worakround added to AstroMain 3.77 which waits 2s after Powerbox.Disconnet finishes cllosing ASCOM clients, and if a JIT debugger process has started up it calls a routine to kill the process. Should there be a pre-existing dialog open, the operation to Kill JIT debugger process is skipped (added 2025-07-25).
   Done 2025-07-18  (AstroMain 3.77)

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2025-07-13

New Powerbox - Pegasus Astro UPB V3

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