David's Astronomy Pages Observatory Notes by Topic

Session Notes

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Imaging Sessions

List of observatory notes by theme & subject
 
(Information can also be accessed from a list of Session Notes ordered by date)

	Theme		Subject
	Observatory		| General | Pulsar Dome | Dome Relay |  Power  |  Zigbee Network |
	Equipment		Equipment associated with Observatory Computer | General | LX200 | TS 80mm APO | (Telescopes) | ST-10XME | ZWO 178MC | (Cameras) | CFW10 | Herschel Wedge | TCF-S | UPB | UPS |
			Equipment associated with AllSky/Weather Computer | AllSky Camera | CloudSensor |  ObsCam | UCH | WMR80 Weather Station |
	Computers		| General | AllSky/Weather Computer | Observatory Computer | Development Computer |
	Software		| General |
	AstroSuite		| AstroMain | AstroGuard | AstroLaunch | AstroMove | AstroPlan | AstroShCap | | AstroAllSky | AstroWeather | AstroObsCam | DomeLink |TeleLink |
	3rd Party		| ASCOM | ASPS | ASTAP | CCDSoft 5 | DeviceHub | Dimension4 | ImageMagicK | | Meade Generic | PHD2 | POTH Hub | RSpec | SharpCap | | Siril | StarNet |  TPoint | PemPro | TheSky6 | Visual Studio | VWS |
	Observing		| General | Comets | Exoplanet | GRBs | Weather |
	Techniques		| General | Autoguiding | Centering | Collimation | Darks | Dual Scope/Cam Ops | Flats | Focusing | Optics | Periodic Error | Polar Alignment | Rebalancing |  Solar | Spectroscopy | Tracking Rate |  TPoint Mapping |
	Unfiled

Observatory Notes

	General		Observatory Notes
	2024-03-11		System Tests - Robustness of Observatory system to a mains power outage
	2023-02-22		Investigation - Response to deterioration in sky conditions with leading edge rain
	2021-12-05		Observatory Maintainance
	2018-08-04		Automated Observatory Operation Testing
	2018-08-07		Automated Observatory Operation Testing
	2018-07-25		Automated Observatory Operation Testing
	2018-07-24		Automated Observatory Operation Testing
	2018-07-22		Automated Observatory Operation Testing (2018-07-18, 2018-07-22)
	2018-07-22		Observatory Commissioning, Stress Test  (2018-06-11, 2018-06-13, 2018-06-25)
	Dome		Pulsar Dome
	2024-03-15		Review - Uninterruptible Power Supply (UPS) for the Pulsar Dome & Cloud Sensor
	2024-03-13		Investigation - Pulsar Dome Settings reset themselves after a power outage
	2024-02-29		Investigation - Shutter Issues (comms between Shutter & Controller frozen)
	2024-01-05		Pulsar Dome - Software Update (Firmware 1.52 & ASCOM Driver 6.4)
	2023-12-13		Observatory - Water Ingress during week of wet weather
	2023-12-07		DomeLink 1.0 - Dome Driver
	2023-12-05		Investigation - Dome Azimuth incorrect by 38° by end of session
	2023-12-02		Pulsar Dome - Shutter Software Reinstall (Shutter 1.25)
	2023-12-02		Pulsar Dome - ASCOM Conformance Tests
	2023-12-02		Pulsar Dome - Recalibration
	2023-11-30		Investigation - Pulsar Dome holding up at Az 168°
	2023-11-17		Pulsar Dome - Replacement Rotation Drive Wheel
	2023-11-15		Pulsar Dome - Software Update (Firmware 1.51 & ASCOM Driver 6.3.10)
	2023-11-09		New Zigbee Sensor for Dome's Shutter (Top)
	2023-11-09		Investigation - Dome failed to fully close during session suspension and safe-recovery attempts
	2023-11-07		Investigation - Dome failed to finish opening after 90s
	2023-10-27		Pulsar Dome - Loose Rotation Drive Wheel
	2023-10-27		Anti-Slip Tape for Improving Observatory Dome Rotation
	2023-10-25		Investigation - Hold-ups during Dome Slewing
	2023-10-22		Replay Dome Slews (new AstroMain feature)
	2023-08-17		Investigation - Dome Shutter failed to close when commanded
	2023-07-19		Pulsar Dome - Rotation Drive Tension Adjustment
	2022-07-13		Pulsar Dome - Home Magnet Tests
	2022-07-02		Pulsar Dome - ASCOM Driver Review
	2022-04-10		Investigation - Commands to open Observatory shutter failed
	2021-12-05		Attempted remediation of bulge in observatory roof panel
	2021-12-01		Review - Dome Shutter Operations
	2021-11-28		Investigation - Dome not reporting correct ShutterState
	2021-11-10		Investigation - Shutter failed to fully close
	2021-11-08		Observatory Dome - Wall Sealant
	2021-04-13		Investigation - Shutter didn't fully close at end of session
	2021-03-31		Pulsar Dome Software Update (Shutter 1.25)
	2021-03-18		Pulsar Dome Software Update (Shutter 1.24)
	2021-03-04		Pulsar Dome Software Update (Shutter 1.23 attempt)
	2021-02-26		Pulsar Dome Software Update (Rotation 1.41)
	2021-01-15		Pulsar Dome - Shutter Chain Adjustments
	2021-01-08		Investigation:  Shutter Opening failed with ShutterStatus=5 (Error)
	2020-12-30		ASCOM Conform Tests - Pulsar Dome Driver
	2020-12-26		Pulsar Dome - New Home Magnet
	2020-12-17		Investigation:  Dome Failed To Close (Mechanical Failure)
	2020-10-28		ASCOM Conform Tests - Pulsar Dome Driver
	2020-10-26		Investigation :  False 'Failed to Park' Alerts during Dome Parking - a timing gotcha
	2020-09-11		Dome Connection Issues
	2020-09-07		Investigation - Dome appears non-responsive or stuck (S805)
	2020-09-01		Pulsar Dome - Corroded Home Magnet
	2020-06-01		Investigation - Opening Dome Issue (S755 & S763)
	2020-05-31		POTH.Dome / Pulsar Driver Glitch (23:43 to 00:06)
	2020-03-27		Investigation - Dome Closing Issue
	2020-03-27		Investigation - Telescope Parking Issue
	2020-01-19		Investigation: Telescope Slew Path Issue
	2019-12-17		Melt water from overnight frost
	2019-11-18		Drainage Holes for Condensation Puddles
	2019-11-17		Cable Conduit Fixing for Dome Controller Leads
	2019-11-17		Repair to Observatory Base Sealent
	2019-09-19		Pulsar Dome - Shutter Battery Not Charging
	2019-09-03		Observatory Exterior Cleaning and Tree Line Trimming
	2019-09-01		Investigation - Dome Drive Slippage, Slow Slewing & Park Dome Failures
	2019-02-13		Investigation - Shutter Drive Unit didn't detect that Shutter had finished opening
	2019-02-07		Investigation - Shutter unexpected closed during initial dome opening
	2019-01-23		Pulsar Dome - Temperature Monitoring
	2019-01-23		Pulsar Dome - Battery Monitoring
	2019-01-22		Investigation - Failure to Close Shutter and Park Scope at end of Session
	2019-01-18		Pulsar Dome - Loose Drive Motor Head
	2019-01-18		Pulsar Dome - Encoder Arm Spring Replacement
	2018-12-22		Pulsar Dome - Software & Driver Updates
	2018-12-20		Investigation - Dome Still Open after Session Finished
	2018-12-17		Dome Port Switching
	2018-12-14		Daytime Observatory Tests
	2018-12-05		Frost Patterns On Inside of Dome
	2018-12-05		Dome Port Switching Issue
	2018-11-28		POTH Dome Exception & COM Port Switching & Way Forward (2018-11-26 to 28)
	2018-08-21		Automated Observatory Operation Testing
	2018-08-21		Dropped Shutter Drive Chain
	2018-05-17		Observatory Commissioning, including TPoint Mapping
	2018-05-16		Observatory Commissioning, including Periodic Error Checks & Polar Alignment
	Dome Relay		Dome Relay
	2023-10-28		Investigation - Dome Relay Protection Stopped Working
	2023-08-17		Investigation - Dome Shutter failed to close when commanded and when Relay State changed to 'Unsafe'
	2020-05-19		Dome Relay Follow Up Testing
	2020-05-15		Dome Relay Repair
	2020-05-13		Dome Relay Testing
	2019-01-12		Dome Relay Project
	Power Supply		Power Supply
	2024-03-15		Review - Uninterruptible Power Supply (UPS) for the Pulsar Dome & Cloud Sensor
	2024-03-11		System Tests - Robustness of Observatory system to a mains power outage
	2024-03-03		Eaton 3S 850B UPS - Off Line Uninterruptible Power Supply System
	2024-03-03		Review - Uninterruptible Power Supply (UPS) for the Observatory Telescope
	2024-02-28		Review - Increasing observatory & session resistance to small power outages
	2024-02-26		Investigation - Effects of Short Power Outage (06:14)
	2018-04-21		Observatory Power Installation
	2018-02-18		Electrical and Connectivity Requirements
	Zigbee Network		Zigbee Network
	2024-03-18		Zigbee - Greenhouse's Temperature/Humidity Sensor not reconnecting to network
	2024-03-13		Investigation - Zigbee Shutter sensors not showing correct states after a power outage
	2023-12-13		Zigbee - AtPark Sensor for Observatory Dome
	2023-12-13		Zigbee - Open/Close Sensor for Greenhouse Door
	2023-12-03		Zigbee - Smart Plug for Greenhouse Heater
	2023-11-21		Additional Greenhouse Sensors
	2023-11-09		New Zigbee Sensor for Dome's Shutter (Top)
	2023-10-10		Greenhouse Temperature/Humidity Sensor
	2023-10-10		Zigbee / Rest API Notes
	2022-11-18		MoesGo Portable Remote Control
	2022-10-22		deCONZ - WebSocket Configuration
	2022-10-22		deCONZ - WebSocket Listener
	2022-10-21		Observatory Zigbee Network
	2022-10-21		Conbee II - Firmware reinstall
	2022-10-16		Zigbee Project
	2022-10-16		Conbee II
	2022-10-16		deCONZ
	2022-10-16		Phoscon App
	2022-10-16		deCONZ - REST API
	2022-10-16		deCONZ - WebSockets

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Equipment Notes

	General		Equipment Notes
	2018-10-20		New Equipment Review - Dew Controller, Motor Focus &  Mount Hub
	2016-12-30		Plans for New Equipment in 2017
	2013-11-27		Systems Test
	2010-01-18		Temporary Setup - 8" LX200 Classic & ST-10XME
	TS 80mm APO		80mm f6 Triplet APO Telescope (TS Photoline)
	2023-01-23		Images taken with TS80 & ZWO 178MC (S1088, 2023-01-18)
	2019-12-11		2" Field Flattener (TSFLAT2, 2019-12-11)
	2017-12-22		Image Coma (TS 80mm APO + ASI178MC)
	2018-11-07		TS 80mm f/6 APO  Critical Focal Zone & Focusing
	2018-11-07		Installation of Motor Focus Unit on TS80 secondary scope
	2017-01-23		TS Photoline 80mm APO - Mounting (Parts 1 & 2)
	2017-01-23		Autoguiding with TS 80mm APO
	2017-01-18		Images taken with TS80 & ZWO 178MC (S600, 2017-01-18)
	2017-01-18		TS Photoline 80mm APO
	2016-12-30		Guide/Imaging Scope Selection (TS Photoline 80mm f/6 FPL53 Triplet APO)
	AllSky Cam		AllSky Camera (Starlight Oculus)
	2023-11-30		AllSky Camera  - Latest Modification to Control Dew
	2023-11-15		AllSky Camera - Ventilation holes (attempt to cure dew problem)
	2023-01-25		AllSky Camera - New O-Ring
	2019-10-16		AllSky Camera - Earwig Problem
	2019-09-03		AllSky Camera - Installation of a baffle to block glare from nuisance lighting
	2013-12-28		Guide Chip Image Scale, Pixel Size and Placement, Oculus All Sky Camera Installation & First Light,
	ZWO 178MC		ASI 178MC Camera (ZWO)
	2023-01-23		Images taken with TS80 & ZWO 178MC (S1088, 2023-01-18)
	2020-10-25		New Chart - Cam2 Temperature (ZWO ASI 178MC)
	2018-10-30		ASI Camera Drivers (Native & ASCOM)
	2017-01-18		Images taken with TS80 & ZWO 178MC (S600, 2017-01-18)
	2017-01-18		ZWO ASI178MC Master Darks
	2017-01-16		ZWO ASI178MC Camera: Read Noise Tests
	2017-01-06		ZWO ASI178MC Camera: Installation,  Test Shots, First Light Image, AllSky Image, Software Notes
	2016-12-30		Planetary Camera Selection (ZWO ASI178MC)
	CFW10		CFW10 Filter Wheel (SBIG)
	2017-01-18		ZWO ASI178MC Master Darks
	2010-01-15		Filter Wheel changes
	CloudSensor		Cloud Sensor (Eurotech, Aurora)
	2021-01-12		Cloud Sensor Anomaly - low clarity ("cloud") values from a clear sky
	2018-08-25		Anomaly in Cloud Sensor Clarity readings
	2018-01-03		Cloud Sensor in New Outside Location
	Her. Wedge		Herschel Wedge
	2017-11-26		Herschel Wedge
	LX200 GPS		LX200 (12" GPS/R, including Autostar II)
	2024-03-03		Review - Uninterruptible Power Supply (UPS) for the Observatory Telescope
	2024-03-02		Recovery from Telescope Shut-Down in Unparked State
	2024-02-29		Investigation - Telescope Failed to Park and was turned off in 'unparked' state
	2023-12-16		Investigation - LX200 continued tracking even though tracking had been turned off
	2023-10-08		LX200 - Mirror Lock Fix
	2023-09-30		Investigation - Drift in Best Focus Position, LX200 Primary Mirror Focus Slipping / Mirror Lock Not Working
	2023-02-09		Lymax SCT Cooler
	2023-01-18		LX200 - Condensation inside Scope
	2023-01-16		Snow slid off Shutter onto Scope
	2022-11-11		Focusing - Temperature and Primary Mirror Slippage Effects
	2022-03-25		Investigation -  Slow Dome Slew / Slow Scope Slew to one particular target
	2021-12-12		Investigation - LX200 Tracking Rate Discrepency
	2021-12-05		Telescope Maintainance
	2021-11-23		Residual Dec Backlash Measurements
	2021-11-23		Polar Alignment Adjustment
	2021-11-22		Ra/Dec Drive Training
	2021-11-21		Dec Backlash Measurements
	2021-11-21		Improvement Plan
	2021-11-19		Dec Centering and Guiding Issues
	2021-11-10		Dec Guide Anomalies (SSE Sky)
	2021-10-31		Occasional Large RA spikes during guiding
	2021-10-25		Proposed Polar Alignment Change
	2021-10-12		New Dec Motor Unit
	2021-04-17		Investigation - Unable to Connect to LX200 Scope
	2021-03-16		Camera Cable Re-Routing Results
	2021-03-14		Camera Cable Rerouting
	2021-01-21		Investigation - Guiding Issues (West of Meridian)
	2020-11-05		Investigation - Slew Failure (Invalid RA)
	2019-12-16		Declination Backlash (anti-backlash re-tried)
	2019-12-16		Tracking Rate (reset to sidereal rate)
	2019-12-11		Declination Drive Checks
	2019-12-10		Declination Backlash - Measurements
	2019-10-15		Telescope.Jog testing
	2019-10-14		Telescope Jog testing
	2019-01-12		Measures to Prevent Cable Snags
	2019-01-08		Cabling Changes & Daytime Tests
	2019-01-02		Telescope Cabling Adjustements
	2018-12-05		Pierro Astro USB-RS232 Cable for LX200
	2018-12-03		Disconnecting Telescope from TheSky
	2018-09-03		'Wrong Tracking State'
	2018-09-01		Timed out waiting for received data' error
	2018-06-11		Telescope Communication Error (TheSky Error Code=213)
	2018-04-27		RA Motor Unit Replacement ,  Dec Gear Regreasing
	2018-01-03		Condensation inside LX200 Tube
	2017-01-23		LX200 Problems (Dropped Connection/Unable to Get GPS Fix)
	2017-01-17		LX200 Periodic Error / PEC, TPoint Software Issue
	2016-12-27		LX200 Main Board Failure, RA Drive Issue,  RA Diagnostics & Tension Spring Adjustment, Autostar II Settings
	2013-11-27		LX200/Autostar II Firmware Update to 4.2G
	2010-02-17		12" LX200 ACF Return to Service
	2010-01-02		LX200R/Autostar II, System Failure, Fault Finding and Restore Attempts
	2009-12-27		LX200R Autostar II / Handbox problems
	2009-06-07		LX200R Slewing
	2009-03-15		Restart from Park Position
	2009-03-09		First Light for 12" LX200R + ST10XME
	LX200 8"		LX200 (8", Classic)
	2009-03-09		Tracking Problem - Counter Weight Balancing
	ST-10XME		SBIG ST-10XME Camera
	2021-01-02		SBIG Camera Bias Level (Sky Brightness Issue & Fix)
	2020-04-25		CCD Desicator Recharge
	2019-08-08		Investigation - Camera Cooling
	2019-08-03		Investigation - Tube Temperature
	2019-01-20		Investigation - Unexpected Disconnection of SBIG Camera
	2018-10-28		Lost Connection to SBIG Camera
	2017-12-22		Image Problem (LX200 + ST-10XME,  Dew, Condensation or Frost)
	ObsCam		ObsCam
	2021-04-14		ObsCam - IR leakage onto CCD Images (tests and solution)
	2020-02-16		ObsCam - New Camera for monitoring Observatory/Telescope
	2020-02-16		AstroObsCam - New Application for capturing ObsCam pictures
	TCF-S		TCF-S Focuser
	2019-08-18		TCF-S Connection Failure
	2018-10-30		TCF-S Focuser - ASCOM Driver
	2018-10-28		Lost Connection to TCF-S Focuser   Optec TCF-S Focuser, Temp Coefficient  2008-07-23
	UCH		Pegasus USB Control Hub (AllSky/Weather Computer)
	2021-10-16		AllSky/Weather Computer - Installation of Pegasus Astro USB Control Hub
	2021-10-15		Pegasus Astro USB Control Hub
	UPB		Pegasus Ultimate PowerBox
	2024-03-03		Review - Uninterruptible Power Supply (UPS) for the Observatory Telescope
	2021-10-07		Investigation - Connection to UPB Powerbox lost / Obs.Monitor freezing in 'Monitor Powerbox'
	2020-08-05		Pegasus UPB - ASCOM Driver Updates (Jun/2020)
	2020-05-24		Pegasus UPB - v1.6.0
	2020-05-15		Pegasus UPB - v1.5.0
	2019-04-22		Pegasus UPB - 16 AWG Extension Cable
	2019-10-02		Pegasus UPB - ASCOM Switch Driver (V2.0)
	2019-09-09		Pegasus UPB - Software Update (1.4.17)
	2019-08-28		Pegasus UPB - Software Update (1.4.16)
	2019-02-05		Pegasus UPB - Software & Firmware Updates (1.4.11 / 1.5)
	2019-01-29		Pegasus UPB - Replacement Humidity Sensor
	2019-01-20		Pegasus UPB - Voltage Supply Issue
	2019-01-12		Pegasus UPB - Humidity Sensor Failure
	2019-01-08		Pegasus UPB - Power Supply
	2018-12-04		Pegasus UPB - Disconnection & Port Switching caused by momentary Power Grid outage
	2018-11-01		Pegasus UPB - Pegasus Ultimate Power Box
	2018-10-20		New Equipment Review - Dew Controller, Motor Focus &  Mount Hub
	UPS		Uninterruptable Power Supply
	2024-03-15		Review - Uninterruptible Power Supply (UPS) for the Pulsar Dome & Cloud Sensor
	2024-03-03		Eaton 3S 850B UPS - Off Line Uninterruptible Power Supply System
	2024-03-03		Review - Uninterruptible Power Supply (UPS) for the Observatory Telescope
	2018-12-22		UPS Review
	WMR80		Weather Station
	2023-12-20		Future Weather Station - EcoWitt
	2022-07-02		Weather Station - Outside T/H Sensor (new batteries)  Future Weather Station - EcoWitt
	2022-02-24		Weather Station's base station moved to Observatory
	2020-09-25		Wind Data Problems
	2020-06-22		Wind Data Outage
	2020-04-26		Weather Station Batteries
	2019-09-07		New Wind Sensor (WMR800X)

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Computers

	General		General Computer Notes
	None		None
	AllSky		AllSky/Weather Computer Notes (Laptop7)
	2020-09-04		Replacement AllSky/Weather Computer - Goes Live
	2020-08-23		New AllSky Computer
	2020-08-18		AllSky Computer,  Potential Replacement
	2020-08-18		AllSky Computer Problems (BSOD & Failed Windows Startup)
	2019-11-25		AllSky/Weather Computer Outages
	2019-10-01		Investigation - Issue with Network & AllSky Computer
	2018-08-22		AllSky Computer Crash
	2018-08-09		AllSky Computer Problems
	2018-08-03		AllSky Computer Outage due to A/C Adapter Failure
	2018-06-11		AllSky Laptop Failure & Replacement (2018-06-11, 2018-06-13, 2018-06-25)
	Observatory		Observatory Computer Notes (Laptop9)
	2022-12-20		Investigation - Loss of Ethernet Connection
	2022-07-14		Investigation -  Unable to Connect Scope in TheSky6 (Blank TeleAPI Setting, following Windows Update)
	2022-06-23		Observatory Computer - Device Setup / Daytime Testing
	2022-06-21		Observatory Computer - Windows 10 Reinstall & Rebuild
	2022-06-16		Observatory Computer - Inaccessible Boot Device
	2021-12-10		First Session with new Observatory Computer
	2021-12-06		Observatory Computer Replacement
	2020-09-05		Development Computer - Windows 10 update (2004), CCDSoft & TeleAPI fixes
	2019-01-08		Observatory Computer - USB Port Repairs
	2018-12-04		Update on Computer Crash Issue
	2018-11-30		Unexpected Computer Restarts
	2018-11-09		COM Port Numbers Changing
	2018-11-06		Observatory Computer COM Ports
	2018-10-28		New USB Hub
	2017-11-17		CCDSoft Re-Install
	2013-11-27		USB Hub/COM Settings
	Development		Development / Desktop Computer Notes (Laptop 10)
	2023-02-24		New Development Computer, 2023
	2022-07-14		Windows 10 - Disable IE Retirement Notification
	2022-04-24		Migration to Visual Studio 2022
	2020-09-05		Development Computer - Windows 10 update (2004), CCDSoft & TeleAPI fixes
	2019-08-03		Windows 10 upgrade (1903) & CCDSoft DLLs
	2018-09-14		New Laptop - Software Installation
	2018-07-29		Desktop Computer Failure & Fix
	2017-11-02		Desktop Computer Upgrade to Windows 10

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Software Notes

	General		Software Notes
	2020-10-28		TS80/178MC - Software Review
	2016-12-30		Planetary Image Capture & Processing Software
	2009-06-07		Software Routine Testing
	Aladin		Aladin Notes
	2009-12-27		Aladin Software (IC 95, M101))
	Ascom		ASCOM Notes
	2022-11-27		Conform Universal 1.0.0
	2022-11-12		ASCOM 6.6 SP1
	2022-04-24		ASCOM 6.6
	2020-12-30		ASCOM 6.5 SP1
	2018-10-31		Programming access to ASCOM Drivers using NameSpaces
	2018-10-30		ASCOM 6.4 SP1
	ASPS		ASPS Notes
	2021-09-15		All Sky Plate Solver (ASPS)
	ASTAP		ASTAP Notes
	2021-03-14		ASTAP - Plate Solving Software
	AstroSuite		AstroSuite Notes
	2018-11-23		AstroSuite,  AstroSuite Program Development & Deloyment
	2018-11-23		Program Version Numbers
	2017-12-13		Communication Ports
	AstroAllSky		AstroAllSky Notes
	2018-11-24		AstroAllSky Refactoring
	AstroMain		AstroMain Notes
	2023-04-02		Investigation - CcdCamera Loop freezing
	2023-03-30		Investigation - Target failed due to a 'RPC server is unavailable' exception
	2024-03-27		Investigation - CCD Monitor lowered Camera SetPoint Temperature to an unachievable level
	2024-03-27		Investigation - TheSky6 failing to Image Link and to Update Telescope Coordinates
	2024-03-05		AstroMain - Task Manager Assistant
	2024-02-29		Investigation - Telescope Failed to Park and was turned off in 'unparked' state
	2023-12-13		Zigbee - AtPark Sensor for Observatory Dome (FindPark)
	2023-11-15		Investigation - Target Circle mispositioned on real time JPG Pictures
	2023-11-02		Investigation - ObsManager freezing just after entering 'Session Running'
	2023-10-22		Replay Dome Slews  (new feature)
	2023-03-14		Investigation - Problem linking one particular image
	2023-02-22		Investigation - Response to deterioration in sky conditions with leading edge rain
	2023-02-11		Investigation - Cross-Thread Problem & Non Responsive UI
	2022-12-18		Investigation - Job Queue/TheSky6 froze during Plate Solution
	2022-11-29		Investigation - Anomalous Centering Operation for Target AT2022sz (RA error)
	2022-11-25		Investigation - Incorrect Scope 2 Offset leading to Incorrect/Missing Cam1 FOV on JPG pictures
	2022-11-03		Investigation - Slewing Discrepency (Jupiter)
	2022-10-29		Investigation - CCDSoft, ObsMonitor & ObsManager freezing
	2022-09-21		Investigation - Auto-Centering Telescope on Jupiter
	2022-07-28		Investigation - PHD2 Client/Server Comms Issues
	2022-07-15		Investigation - CCDSoft and ObsMonitor ('Update Foc1 Fields') Hanging
	2022-06-06		Investigation -  Anomalous Dome Slew (HIP 87937, 01:40) - False-Alert
	2022-03-25		Investigation -  Slow Dome Slew / Slow Scope Slew to one particular target
	2021-12-01		Review - Dome Shutter Operations
	2021-10-07		Investigation - Connection to UPB Powerbox lost / Obs.Monitor freezing in 'Monitor Powerbox'
	2021-08-28		Investigation - Target Position Failure (2 Pallas)
	2021-05-06		Investigation - Abnormal Pointing Errors & Centering Failures
	2021-04-30		Investigation - JobQueue Freezing during Telescope.Jog
	2021-04-24		Investigation - Slewing Scope Path Resolution
	2021-04-20		Investigation - Jog Execution held up by "Unable to start the DirectSlew" dialog from TheSky6/ASCOM
	2021-04-20		Investigation - Straight Line ScopePaths when using Meade Generic Ascom Telescope Driver
	2021-04-20		Investigation - Scope appearing to slew across Due North Plane from Az 43.9° to Az 358.6°
	2021-03-31		Investigation - AstroMain stalls when importing Observing Plan
	2021-03-24		Investigation - Incorrect Reporting of Guiding Results
	2021-03-16		New Button Routine to Check/Reset Telescope Pointing
	2021-03-13		Investigation - Multiple Dome Closure Commands
	2021-03-08		Investigation - Hang-ups during Observatory Monitoring
	2021-02-26		Investigation - UI lock up during live sessions
	2021-01-11		Analysis: Protection from approaching showers
	2021-01-08		Investigation:  Job Queue stopped / Targets executed with closed dome shutter
	2020-11-28		Investigation - Impossibly Large Pointing Error (156P/Russell-LINEAR)
	2020-11-05		Investigation - Slew Failure (Invalid RA)
	2020-10-26		Investigation :  False 'Failed to Park' Alerts during Dome Parking - a timing gotcha
	2020-10-25		New Chart - Cam2 Temperature (ZWO ASI 178MC)
	2020-10-23		Investigation - Session unexpectedly moved to Suspended State (from Equilibration State)
	2020-09-29		Investigation - ToO Insertion Issue (S815)
	2020-09-29		Investigation - CCDSoft Images not getting saved to disk [0000 issue]
	2020-09-26		Earliest Plan Start Time
	2020-09-07		Investigation - Scope Slewing Chart shows telescope slew passing across North Celestrial Pole (Scope Path had only two points)
	2020-08-28		Investigation - Ongoing Issues that prevent fully reliable operations
	2020-07-17		Investigation - Obs.Manager freezing upon entering Closing State
	2020-07-06		Investigation - Session not completed or shutdown (Job Queue froze whilst closing dome)
	2020-06-01		Dew Heater Control
	2020-01-18		Investigation - AstroMain Program Hung
	2019-11-18		Investigation - Observatory Manager and GUI became frozen at 06:31
	2019-09-26		ObsOverseer, ObsWorker and other new Processes (AstroMain)
	2019-09-26		Investigation - Invalid Sun Altitude at session start (AstroMain)
	2019-09-03		AdvMain - Multiple Critical Cloud Alert Messages
	2019-09-03		Live Session Data Feed
	2019-09-01		Investigation - Incorrect Mosaic Coordinates
	2019-09-01		Investigation - Job Queue froze whilst attempting Mosaic Target
	2018-08-25		Analysis of Temperature Plots, Dew Heating and Dew Point
	2018-08-25		Investigation - Frozen Job Queue (Waiting on Telescope Jog to finish)
	2019-08-22		Investigation -  Session Suspension Issues
	2018-08-13		Job Queue Freezing
	2019-08-03		Investigation - Premature End of Session (jobAbortTarget issue)
	2018-12-03		GA Scheduling Convergence Plots
	2018-10-28		Targets of Opportunity
	2018-06-09		CCDApp2 Freezing - Investigation
	2017-01-02		Observatory Software Issues/Fixes
	AstroGuard		AstroGuard & AstroProtect Notes
	2019-04-22		AstroProtect - Successful Observatory Shutdown
	2019-02-12		AstroGuard Telescope Protection
	2019-02-06		AstroProtect Telescope Protection
	2018-12-22		AstroProtect
	AstroLaunch		AstroLaunch Notes
	2018-11-23		AstroLaunch
	AstroMove		AstroMove Notes
	2018-11-23		AstroMove
	AstroObsCam		AstroObsCam Notes
	2021-10-23		Daytime Tests - Examination of IR Leakage from Observatory WebCam
	2020-02-16		AstroObsCam - New Application for capturing ObsCam pictures
	AstroPlan		AstroPlan Notes
	2022-07-14		Investigation - Unsuccessful to rollback of Live Folder to previous session
	2021-10-14		Investigation -  AstroPlan stopped uploading files to website
	2021-09-15		Schedule Builder - Calibration Targets
	2021-03-29		Investigation - AstroPlan's FTP Uploading Stalls
	2020-09-26		Earliest Plan Start Time
	2019-09-17		Slow Schedule Building in AstroPlan
	2018-06-06		Computer Generated Observing Plan
	AstroShCap		AstroShCap Notes
	2019-10-12		AstroShCap Program
	AstroSN		AstroSN Notes
	2020-10-21		AstroSN - Data Source and Proof of Concept
	AstroWeather		AstroWeather Notes
	2023-12-04		Investigation - OpenWeather JSON Parsing Issue
	2021-11-02		Weather Forecast - OpenWeatherMap.Org vs DarkSky.Net
	2019-08-21		AstroWeather - Weather Forecast Chart (New)
	2018-01-03		Sky Brightness Plot with Rain & Clarity data,
	CCDSoft 5		CCDSoft 5 Notes
	2023-04-02		Investigation - CcdCamera Loop freezing
	2023-03-14		Investigation - Problem linking one particular image
	2021-01-02		SBIG Camera Bias Level (Sky Brightness Issue & Fix)
	2020-09-29		Investigation - CCDSoft Images not getting saved to disk [0000 issue]
	2020-09-05		Windows 10 update (1909 to 2004), CCDSoft & TeleAPI fixes
	2018-11-09		ASCOM Plug-In for CCDSoft
	2018-10-30		ASCOM Focuser (FocusAPI) Plug-in for CCDSoft
	2017-11-17		CCDSoft Re-Install
	DeviceHub		Device Hub Notes
	2022-11-14		TeleLink 1.0 - Telescope Driver
	2022-11-12		DeviceHub 6.6.1.1
	2022-07-23		DeviceHub 6.6.0.16
	2022-06-29		DeviceHub 6.6.0.13
	2022-06-26		DeviceHub 6.6.0.12
	2022-06-09		DeviceHub 6.6.0.11
	2022-06-06		Investigation -  Anomalous Dome Slew (HIP 87937, 01:40) - False-Alert
	2022-06-02		DeviceHub 6.6.0.10
	2022-05-15		DeviceHub 6.6.0.8
	2022-05-12		Investigation -  Dome didn't appear to move during telescope slew
	2022-04-28		DeviceHub 6.6.0.6
	2022-04-27		DeviceHub 6.6.0.5
	2022-04-24		DeviceHub 6.6.0.4
	2021-12-14		DeviceHub 6.5.1.9
	2021-12-13		DeviceHub 6.5.1.8
	2021-12-10		Investigation - Guiding Runaway (SideOfPier Issue)
	2021-11-03		DeviceHub 6.5.1.7
	2021-05-11		DeviceHub 6.5.1.4
	2021-05-06		DeviceHub 6.5.1.3
	2020-10-26		Investigation :  False 'Failed to Park' Alerts during Dome Parking - a timing gotcha
	2020-10-15		DeviceHub 6.5.0.1
	2020-10-15		Stalled Dome Issue - Status
	2020-09-26		Dome Data Stalled (S813)
	2020-09-18		DeviceHub 6.4.1.11 - Fast Poll Rates
	2020-09-07		Investigation - Scope Slewing Chart shows telescope slew passing across North Celestrial Pole (Scope Path had only two points)
	2020-09-07		Investigation - Dome appears non-responsive or stuck (S805)
	2020-06-01		ASCOM.DeviceHub
	Dimension4		Dimension4 Notes
	2022-04-24		Dimension 4, Version 5.31
	DomeLink		DomeLink Notes
	2023-12-07		DomeLink 1.0 - Dome Driver
	ImageMagicK		ImageMagicK Notes
	2019-09-28		ImageMagick
	MeadeGeneric		Meade Generic Driver Notes
	2024-03-02		MeadeGeneric 1.3.9
	2022-05-30		MeadeGeneric 1.3.5.414
	2021-12-19		MeadeGeneric 1.3.3.375
	2021-12-16		MeadeGeneric 1.3.3.373
	2021-12-10		Investigation - Guiding Runaway (SideOfPier Issue)
	2021-09-28		MeadeGeneric Telescope Driver (1.3.2)
	2021-08-16		MeadeGeneric Telescope Driver (1.3.1)
	2021-07-18		MeadeGeneric Telescope Driver (1.2.0 & 1.3.0)
	2021-04-23		MeadeLX200GPS Driver Testing (2021-04-22 to 2021-04-25)
	2021-04-23		MeadeGeneric Driver Testing (2021-04-22 to 2021-04-28)
	2021-04-20		Meade Generic Telescope Driver
	2021-04-17		Investigation - Unable to Connect to LX200 Scope
	PHD2		PHD2 Guiding Notes  (See also Techniques - Autoguiding)
	2024-02-17		PHD2 Update 2.6.13
	2023-01-29		PHD2 Update 2.6.11dev4
	2022-09-14		PHD2 Update 2.6.11dev2
	2022-08-28		Review - PHD2 AutoFind
	2022-07-28		Investigation - PHD2 Client/Server Comms Issues
	2022-06-27		PHD2 Calibration - TS80/178MC, S1020
	2021-12-10		Investigation - Guiding Runaway (SideOfPier Issue)
	2021-01-21		Investigation - Guiding Issues (West of Meridian)
	2021-08-09		PHD2 Update 2.6.10
	2021-06-02		PHD2 Update 2.6.9dev5
	2021-02-10		PHD2 Upgrade 2.6.9dev4
	2021-01-04		PHD2 Upgrade 2.6.9dev3
	2021-01-02		PHD2 Upgrade 2.6.9dev2 & Multi-Star Guiding
	2020-07-26		PHD2 Update to v2.6.9
	2020-05-13		PHD2 Update to v2.6.8
	2020-03-27		PHD2 Update to v2.6.7
	2019-12-10		PHD2 Update to v2.6.6.dev3
	2019-09-28		PHD2 Update to V2.6.6 dev2
	2018-08-14		PHD2 Autoguiding
	2017-12-04		PHD2 Calibration , ZWO Camera
	2017-11-17		PHD2 Guiding, Automated Guiding
	2017-11-14		PHD2 Guiding, Automated Guiding
	2017-11-02		PHD2 (2.6.4)
	2017-02-07		PHD2 Connection & Control, Automated Guiding
	2017-01-17		Autoguiding attempt with PHD2
	2017-01-06		PHD2 Notes
	2017-01-02		PHD2 Guiding Software
	POTH Hub		POTH Hub Notes
	2020-05-31		POTH.Dome / Pulsar Driver Glitch (23:43 to 00:06)
	2017-01-25		POTH Hub & Telescope Parking (Follow-Up)
	2017-01-23		ASCOM POTH Hub
	RSpec		RSpec Notes
	2021-08-30		RSpec Update (2.0.0)
	SharpCap		SharpCap Image Acquistion & Control Notes
	2021-08-28		SharpCap 4.0
	2021-02-26		SharpCap Software Update - v3.2.6480
	2021-01-04		SharpCap Upgrade 3.2.6473.0
	2020-10-15		SharpCap Scripting- Notes
	2020-07-26		SharpCap Update to v3.2.6383.0
	2020-01-18		SharpCap Notes - Area Selection for FWHM Measurement
	2019-12-04		SharpCap Update to v3.2.6137.0
	2019-10-25		SharpCap Notes (2019-10-25),  SharpCap Notes (2019-10-24)
	2019-10-22		SharpCap Notes (2019-10-22),  SharpCap Notes (2019-10-21)
	2019-10-12		SharpCap Scripting Notes
	2019-10-12		SharpCap (3.2)
	2017-11-26		SharpCap Browser
	2017-11-02		SharpCap (3.10)
	2017-02-07		SharpCap Connection & Control
	2017-01-23		SharpCap - Live Stacking with FWHM Filter Enabled
	2017-01-06		SharpCap Notes
	Siril		Siril Notes
	2023-12-20		Siril (1.2.0)
	2023-01-18		Siril 1.0.6
	2020-11-07		Siril 0.99.6
	StarNet		StarNet Notes
	2023-01-29		StarNet V2 Software
	TheSky6		TheSky6 Notes (including TeleAPI)
	2024-03-27		Investigation - TheSky6 failing to Image Link and to Update Telescope Coordinates
	2022-12-18		Investigation - Job Queue/TheSky6 froze during Plate Solution
	2022-11-14		TeleLink 1.0 - Telescope Driver
	2022-07-14		Investigation -  Unable to Connect Scope in TheSky6 (Blank TeleAPI Setting, following Windows Update)
	2020-11-05		Investigation - Slew Failure (Invalid RA)
	2020-09-05		Windows 10 update (1909 to 2004), CCDSoft & TeleAPI fixes
	2018-10-30		TheSky TimeOut Waiting for Received Data Issue
	TeleLink		TeleLink Notes
	2022-11-14		TeleLink 1.0 - Telescope Driver
	TPoint		TPoint Notes (See also Techniques - TPoint Mapping)
	2017-01-17		TPoint Issues & Install
	2013-12-20		TPoint Mapping Run
	Visual Studio		Visual Studio Notes
	2021-03-02		Visual Studio 2019 Installation and AstroSuite Project Transfer
	VWS		Virtual Weather Station Notes
	2020-08-17		Virtual Weather Station - Database Glitch
	PemPro
	2019-11-18		Investigation - Slew Failures (PemPro related)

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Observing Notes

	General		Observing Notes
	Comets		Comet Notes
	2020-05-29		Problems imaging C/2020 F8 (SWAN)
	2019-10-04		Comet Tracking with PHD2
	Exoplanet		Exoplanet Notes
	2005-08-08		HD 209458 (Osiris) - Extra-Solar Planet Transit
	2007-05-24		Baseline Image Analysis - HAT-P-2 (Sessions 196-199)
	2009-11-08		XO-2b Exoplanet Transit
	GRBs		GRB Notes
	2020-10-14		GCN Monitoring - GRB Swift 1000255
	2020-10-13		GCN Monitoring - GRB Swift 999948
	2020-05-28		Observatory Reaction to GCN Alert, GRB Swift 974942 (GRB 200529A)
	Weather		Weather Notes
	2023-12-13		Observatory - Water Ingress during week of wet weather
	2023-11-13		Storm Debi (2023)
	2023-10-19		Storm Babet (2023)
	2022-07-27		Missing Observing Opportunity (2022-07-27)
	2021-01-21		Storm Christoph (2021)

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Technique & Method Notes

	General		Software Notes
	2020-01-08		Updated Plate Scale
	2019-11-13		Imaging Improvement Plan (2019)
	2013-11-18		Imaging Improvement Plan (2013)
	Automation		Automation Notes
	2020-08-21		AutoStart Results,  AutoStart Results (2020-08-20), AutoStart Results (2020-08-24),
	2020-08-11		Observatory Alerts System (AstroAlarm)
	2020-08-08		AutoStart Results,  AutoStart Results (2020-08-09)
	2020-08-05		AutoStart Observatory Mode
	2019-10-26		Investigation - Soft Suspend
	2019-10-01		Investigation - Unexpected Dome Closure
	2019-09-30		Target Centering
	2019-09-11		Critical conditions alert with no obvious reason
	2019-08-22		Investigation -  Session Suspension Issues
	2018-08-19		Automated Observatory Operation Testing
	2011-01-20		Start-Up Gremlins
	Autoguiding		Autoguiding Notes
	2022-06-27		PHD2 Calibration - TS80/178MC, S1020
	2021-11-24		Investigation - Excessive Backlash Compensation ?
	2021-11-24		Guiding Issues
	2021-11-10		Dec Guide Anomalies (SSE Sky)
	2021-10-31		Occasional Large RA spikes during guiding
	2021-10-07		Autoguiding Review
	2021-01-21		Investigation - Guiding Issues (West of Meridian)
	2021-01-11		Investigation - Autoguiding Issues (Uncorrected Dec drif)
	2020-01-08		Guiding Performance
	2019-12-31		Guiding Performance Issues - Declination Backlash
	2019-12-16		Guiding Calibration (update to 0.90 guiding rate)
	2018-08-14		PHD2 Autoguiding
	2019-01-02		Autoguiding Problem
	2018-10-30		Guidescope Autoguiding
	2017-01-23		Autoguiding with TS 80mm APO
	2013-12-28		Guide Chip Image Scale, Pixel Size and Placement
	2013-11-18		Setup with AO-8 (adaptive options system)
	CCD Tests		CCD Test Notes (including CCD Linearity)
	2009-04-30		Linearity Checks
	2008-11-16		CCD Tests, Gain, Read-Out Noise, Dark Current  (ST-7E camera)
	Centering		Centering Notes
	2022-09-21		Investigation - Auto-Centering Telescope on Jupiter
	Collimation		Collimation Notes
	2009-08-07		Collimation Checks
	2009-04-05		Collimation Checks
	2009-04-01		Collimation
	2009-03-15		Collimination
	2009-03-09		Collimation Issues
	Darks		Dark Frame Notes
	2020-11-04		178MC Dark Frames
	2020-10-28		178MC Dark Frames
	2018-07-25		Dark Frames -10c,  Dark Frames -15c
	2019-02-07		Dark Frames -20 degC
	2019-01-20		Dark Frames -25 degC
	2013-11-18		Focusing, Imaging Improvement Plan
	2008-10-18		Dark Frame - Reducing Dark Current with CCD age  ???
	Dual Scope Ops		Dual Scope/Dual Camera Operation Notes
	2020-10-25		TS80/178MC - Improvement Plan
	2017-11-14		Dual Scope/Dual Camera Ops
	Flats		Flat Frame Notes
	2018-09-14		Sky Flats
	2018-09-09		Sky Flats Routine,  Sky Flats Reduction
	2018-09-08		Sky Flats Routine
	2018-09-04		Sky Flats Routine
	2017-12-22		Corrective Reduction Process
	2013-11-18		Flats ss
	2013-11-18		Flats
	2012-08-03		Impact of having an up-to-date flat field on final image (M101)
	2010-01-18		Filter Flats
	2009-04-05		Flat Frames
	2009-03-21		Flat Frames, Filter Flats
	2009-03-05		Flats History / 8" LX200 Classic + ST-7E
	Focusing		Focusing Notes
	2023-10-08		LX200 - Mirror Lock Fix
	2023-09-30		Investigation - Drift in Best Focus Position, LX200 Primary Mirror Focus Slipping / Mirror Lock Not Working
	2022-11-11		Focusing - Temperature and Primary Mirror Slippage Effects
	2020-12-02		Review - Anomalous points during autofocusing
	2020-11-21		Foc2 Wide Search Auto-Focusing Issue (S831)
	2020-09-28		Foc2 Focusing Problem (S813 & S814)
	2020-09-19		Temperature Effects on Foc1 Focusing (S811 & S812)
	2020-09-05		Foc1 AutoFocusing Error due to cosmic-ray (Profile 5),
	2020-08-30		Foc1 Auto-Focusing - Impact of Weather/Seasonal related focus changes
	2020-08-29		Foc2 Auto-Focusing Results (2020-08-29 to 2020-08-31)
	2020-08-24		Foc2 Auto-Focusing Result  Secondary Scope - Focusing 2019-11-18
	2020-05-24		TCF-S - Focus Temperature Compensation (12" LX200)
	2020-05-06		Best Focus Chart
	2020-05-02		Guidescope Focusing (V3)
	2020-04-27		Best Focus Chart
	2020-04-24		Zenith FWHM Chart
	2020-01-08		Refocusing
	2020-01-02		Investigation - Failed Focus Profile
	2019-11-18		Secondary Scope - Focusing
	2019-11-12		Focusing with New Backlash Compensation
	2019-11-11		Focusing using SharpCap Focus Measurements
	2019-11-11		Focusing Backlash
	2019-11-08		Secondary Scope - Focusing Issue
	2019-02-13		Autofocussing - FWHM Profile & HFD V-Slope Comparison
	2019-01-02		Autoguiding Problem
	2018-11-17		Code Review - Modifying Focusing Box Size & Position (2018-11-17)
	2018-10-30		Focusing & Camera 2 control
	2018-09-04		Critical Focus Zone
	2018-08-07		Autofocussing
	2013-11-18		Focusing
	2010-11-10		Spectral Image Focusing
	2010-09-26		Spectral Filter Focussing
	2010-02-17		Focus Offsets
	2010-01-18		Focus Offsets
	2010-01-18		Focuser Coefficients
	2009-08-07		Focuser Coefficients (12" LX200R operating at f/5.7)
	2009-04-05		Atmospheric Effects on Focus
	2009-04-01		Seeing/Atmospheric Refraction Effects
	2009-03-29		Automated Filter Adjusted Focusing
	2009-03-21		Real-Time Focus Graphs
	2009-03-15		Focus Offsets
	2009-03-15		Critical Focus Zone
	2008-09-22		Temperature Coefficient - LX200
	2008-07-23		Optec TCF-S Focuser, Temp Coefficient
	Optics		Optics Notes
	2020-01-08		Optical Cleaning
	Periodic Error		Periodic Error Notes
	2017-01-02		Periodic Error Assessment (S598.3)
	2009-12-10		PEC Refinement (S403)
	2009-05-28		PEC Refinement (S370)
	2009-03-29		PEC Training (S359)
	2009-03-21		PEC Training (S358)
	Polar Alignment		Polar Alignment Notes
	2021-10-25		Proposed Polar Alignment Change
	2019-12-10		Polar Alignment - Measurements and Adjustments
	2013-11-27		Polar Alignment Check
	2013-11-18		Polar Alignment Check
	2010-02-17		Polar Alignment Checks
	2010-01-18		Polar Alignment Adjustment
	2009-12-04		Polar Alignment Adjustment
	2009-03-29		Polar Alignment Checks
	2009-03-21		Polar Alignment Checks
	Rebalancing		Telescope Rebalancing Notes
	2021-04-23		Telescope Rebalancing
	2020-01-08		Re-Balancing
	2019-12-17		LX200 Re-Balancing (3)
	2019-12-11		LX200 Re-Balancing  Changes prior to session (Optical Cleaning, Rebalancing, Refocusing, Updated Plate Scale),  Guiding Performance  (2020-01-08)
	Solar		Solar Notes
	2017-11-26		Solar Observing Procedure, Solar Tracking Rate
	Spectroscopy		Spectroscopy Notes
	2021-08-30		RSpec Update (2.0.0)
	2021-08-30		Review - Spectra Processing and Analysis
	2009-12-26		P Cyg Spectrography, Vega Spectroscopy revisited
			2005-12-18
	TPoint Mapping		TPoint Mapping Notes
	2021-10-19		TPoint Mapping Run
	2020-01-17		TPoint Mapping
	2018-05-17		TPoint Mapping (Dome Observatory Commissioning)
	2017-12-07		TPoint Mapping Run
	2009-04-30		TPoint Mapping Attempt
	2007-10-02		TPoint Mapping Run (8" LX200)
	2007-09-03		TPoint Mapping Run (8" LX200)
	2005-12-18		TPoint Mapping (8" LX200)
	Tracking Rate		Tracking Rate Notes
	2017-11-26		Solar Tracking Rate
	2013-11-27		Tracking Rate Check & Adjustment
	2009-04-01		Tracking Rate Adjustment Trial
	2009-03-29		Tracking Rate Adjustment Trial
	2009-03-21		Tracking Rate Issue
	Weather		Weather Notes
	2020-08-07		Potential Observing Session not utilised (2020-08-07)
	2020-08-03		Potential Observing Sessions not utilised (2020-07-29 & 2020-08-03)
	2020-01-19		Warm Front

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Unfiled Notes (up to 2021-11-28)

Unfiled Notes (up to 2019-08-08)

	2018-06-06		Notes  (S00612)		Session S612 (, Light Artifact, POTH/Scope Issues
	2018-05-17		Notes  (S00611)		Session S611 (2018-05-17),  (2018-05-17, 2018-05-22)
	2018-05-16		Notes  (S00610)		Session S610 (2018-05-06),  (2018-05-05 to 2018-05-16)
	2017-12-22		Notes  (S00608) -		Session S608 (2017-12-22), , Corrective Reduction Process,

			LINKS BELOW HERE HAVE NOT YET BEEN DEVIDED BY SUBJECT
	2017-11-14		Notes  (S00604) - Aims/Highlights, Operational Issue,
	2010-11-10		Notes  (S00435) - Spectra Filter Test for Zero Order Shift
	2009-09-19		Notes  (S00389) - Remnant CCD electron counts / images of M110
	2009-03-15		Notes  (S00357) - Collimination, Focus Offsets
	2009-03-09		Notes  (S00356) -  Star Blooming, Image Comparison
	2009-02-27		Notes  (S00351) - Ted Agos Universal Focal Reducer Adapter Tube
	2008-10-04		Notes  (S00310) - Automated Slew, Locate and Guide, Automated guiding performance (HD 209458)
	2008-09-27		Notes  (S00306) - Automated Slew, Locate and Guide, Automated guiding performance (SS Cyg)
	2008-09-25		Notes  (S00305) - Slew and Jog Analysis (S297-305)
	2008-09-11		Notes  (S00301) - Image Linking - Raw Images for Target Centering / Reduced Images DY Per
	2008-05-07		Notes  (S00286) - Stellar Spectra - Repeatability
	2008-05-02		Notes  (S00285) - Focusing - Star Analyser 100, Autofocusing, Temperature Monitoring
	2008-03-12		Notes  (S00276) - Focus Profiles, Temperature Coefficient
	2008-02-19		Notes  (S00266) - Optec TCF-S Focuser, Focal Ratio, Critical Focus Range, Collimation Check
	2008-01-11		Notes  (S00252) - Polar Alignment Adjustment, Periodic Error check
	2007-09-10		Notes  (S00211) - Polar Alignment 2007-09-10
	2007-08-27		Notes  (S00208) - CCD Assisted Polar Alignment 2007-08-27
	2007-05-24		Notes  (S00199) - Baseline Image Analysis - HAT-P-2 (Sessions 196-199), Autoguiding Between Frames  & Re-Analysis of images of MPL 2006 VV2 taken 2007-04-01 (S187), Simulated Trace with Periodic Error)
	2007-05-19		Notes  (S00198) - Further Base Line Observations of HAT-P-2
	2007-05-14		Notes  (S00197) - Further Base Line Observations of HAT-P-2
	2007-05-07		Notes  (S00196) - Base Line Observations of XO-2 & HAT-P-2, Diffraction Spike Patterns
	2007-03-02		Notes  (S00179) - Sun - Mosaic Imaging & Construction
	2006-11-17		Notes  (S00153) - Example of Poor Seeing - Groombridge 34
	2006-05-12		Notes  (S00126) - Sky Conditions, RT Aug Analysis/Results
	2006-01-31		Notes  (S00112) - Sky Conditions, Frost Slugs
	2006-01-30		Notes  (S00111) - Sky Conditions, Frost Slugs & Ice Reflections
	2006-01-11		Notes  (S00110) - Sky Conditions, Impact of Light Wind on Dew Shield
	2006-01-03		Notes  (S00109) - Sky Conditions, 2x2 vs 1x1 binning compared
	2006-01-01		Notes  (S00108) - Sky Conditions, Impact of Light Dew/Condensation, Use of Log brightness scaling / False Colour
	2005-12-21		Notes  (S00107) - Sky Conditions, Sky Brightness Survey
	2005-11-05		Notes  (S00104) - Bright Star Tests
	2005-10-30		Notes  (S00102) - Sky Conditions, RR Lyrae Photometric Analysis, Sky Brightness Survey
	2005-10-13		Notes  (S00099) - Sky Conditions, RR Lyrae Photometric Analysis, Altair glare/focus, Star Elongation Analysis
	2005-10-08		Notes  (S00098) - Sky Conditions, RR Lyrae Photometric Analysis, Zero Point/Dew Condensation, Refocussing Issues
	2005-10-05		Notes  (S00097) - Sky Conditions, Delta Cepheid Magnitude Analysis
	2005-09-30		Notes  (S00095) - Sky Conditions, False Plate Solution Matches, M37 Mosaic Attempt
	2005-09-18		Notes  (S00094) - Sky Conditions, Positioning Error Analysis, Elongated Stars Analysis, Variable Star Patrol Tool
	2005-09-02		Notes  (S00093) - Sky Brightness Survey, Sky Conditions, S/N Data
	2005-08-05		Notes  (S00090) - Sky Conditions, Temporary Frost Effect in CCD Camera
	2005-06-10		Notes  (S00089) - Sky Brightness, Astronomical Sharpness / Seeing, Fine Focusing/Direct Read-Out of FWHM
	2005-06-06		Notes  (S00088) - Parfocal Test - B Filter / Image Linking
	2005-05-17		Notes  (S00087) - M27 Colour Image Construction, Master Flats)
	2005-01-15		Notes  (S00082b) - Dark Current Investigations
	2005-01-05
	2004-12-28		Notes (S00081) - Flat Frame Components, M61 Image Processing
	2004-12-07		Notes (S00078) - Wedge/Polar Axis Adjustments, PEC Training
	2004-09-07		Notes (S00071) - Albireo Star Field - Enhanced Image Display & Magnitude Limits
	2004-08-20		Notes (S00066) - HD 209458 Extra-Solar Planet Detection - Dry Run
	2003-11-21		Notes (S00054) - Frost Slugs on M33/M1 Images, Sky Brightness Survey
	2002-09-20		Notes (S00026) - Magnitude Reach, Uranian Moons, Double-Double in Lyra, M92 Glob. Cluster
	2002-09-12		Notes (S00025) - Telescope collimation, Uranian Moons, Master Flats)
	2002-08-31		Notes (S00022) - Identification of Uranian Moons
	2002-03-07		Notes (S00019) - Flat Fielding, Mosaic Construction, Aligning Planet Images, FWHM Analysis
	2002-02-16		Notes (S00017) - duplicate of S00019
	2002-01-31		Notes - CCD Imaging Performance (2001-Oct to 2002-Jan)
	2002-01-17		Notes (S00016) - Drift Imaging, FWHM analysis, Betelguese, Autoguiding, Dew
	2002-01-11		Notes (S00015) - Autoguiding Analysis, FWHM Analysis - Horsehead Nebula Images, Dew
	2001-12-20		Notes (S00014) - FWHM Analysis - M36 Image)
	2001-12-14		Notes (S00013) - FWHM Analysis, Autoguding Analysis)
	2001-09-25		Notes (S00002) - FWHM Analysis, Deconvolution processing of Double-Double Image (Lyra)

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LX200R - Electrical

- 12v  (8 x 1.5v Size C batteries)
- input jack requires connector with  5.5mm outer diameter, 2.5mm inner diameter
- center pin positive

Notes:
 The Power Supply that I use is a AC317 12V IC-Regulated AC Mains Power Supply Unit, 1200mA 
 The end of wire from the 12V DC Supply has two female holes which connect to two male pins at the end of conventional circular plug adapter.
 Whilst this allows the supply to deliver to both products needed center pin positive and center pin negative, it 
 is vital that LX200 GPS / R scope receives its input with center pin positive
 There is a danger of connecting the pins the 'wrong way' around, if taken apart.  In case of this the following
  information tells me which way the pins need to be inserted :

Arrow on Supply End of lead goes opposite the

+
 |
o
U
|
- 

****  Take photo and place here ......

  The non-volatile memory is retained using a "coin" battery—a Sony CR2032 3v lithium

   LX200 Classic used 18v supply and should not be used with LX200GPS or LX200R/LX200ACF scopes. I assume that the Classic required center pin positive supply (Check)
  Battery power can not be used unless the power input jack is removed 

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Asteroid or residual periodic error

A series of images of the near earth passing minor planet MPL 2006 VV2 were taken on 2007-04-01. Stacked image and animated sequence of images are shown below. It was noted at the time that the minor planet's path appeared to wobble, yet it was clearly evident that this could not have been an actual wobble or rotation in the minor planet.  Although relatively close to Earth, the minor planet is still much too far distant for any wobble/rotation to be observed

Although the possibility of a periodic error effect was considered the true cause of the wobble effect remained a bit of a mystery until it was decided to make a simulated picture of minor planet's apparent path assuming a residual periodic error of +/-2.5 arc secs for the LX200 scope.  There is a very similar pattern of wobble between the simulation and actual images, proving beyond reasonable doubt that the observed wobble was due to residual periodic error in the scope's tracking.

See notes & pictures at Re-Analysis of images of MPL 2006 VV2 taken 2007-04-01 (S187) - Simulated Trace with Periodic Error

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