David's Astronomy Pages Notes - Session 835  (2020-11-27)

Notes (S834)

Notes Main

Home Page

Notes (S836)

	Session Aims & Highlights
	- Observing Result  - Night Summary Plot  - Session Event Log
	Operational Issues
	- Critical Issues (0),  Major Issues (0),  Minor Issues (3),  Continuous Improvement (0)
	Images from 2020-11-27 >>

Session Aims & Highlights (2020-11-27)

Main aims -

1. Refocus Main Scope.  Move LX200 main mirror so that scope is at focus at around the middle of TCF-S focuser range
   ( i.e. at a position of around 3500-4000,  focuser range of 0 - 7000)
    (problems encountered in prior session (S833) where best focus was as low as 150 and profiles were being clipped)
2. Targets. Acquire images of a selection of variable stars, nearby stars, comets and deep sky targets as allowed by bright moonlight conditions.
3. Bug Fixes. Check that bug fixes made since last session haven't upset the program operation and are working where appropriate.

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 3.32.9,  AstroGuard 1.4.6,   AstroPlan 1.17.5  AstroShCap 1.3.6, AstroVOE 1.5, AstroProtect 1.4.1
  (AstroWeather 1.10.13, AstroAllSky 3.6)

Dome position adjusted and resynced from 91.1 to 90.0 deg to achieve final park.

Highlights

• Targets.  x targets were observed.
• Telescope Refocusing.  Telescope main mirror moved allowing the TCF-S foucser (0-7000 range) to be at focus at 3930 instead of prior positon at 739.

Lowlights

•   None

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)

Pre-Session Weather Forecast (API data from darksky.net) Pre-Session Weather forecast showed cloudy skies throughout the first part of the night (cloud cover 90-100%) but clearing slightly from 01:00 onwards (cloud cover 22-68%) with calm conditions (wind 4-7 mph), Minimum temperature 2 degC. In the event there was a clear spell from 18:00 to 20:40 with a more prolonged clear spell from 23:20 to 04:40 and a further clear spell at 06:30 till dawn. Temperatures fell below 0 degC at 01:00 reaching a minimum of -1.5 degC.  Winds were calm to very light.

Session Event Log

Time     Event Detail 20:19:56 Session Monitoring AutoStart monitoring for Live Session opportunity starting between 20:19 & 06:11 20:19:58 Session AutoStarting Session autostarting (20:19) 20:20:29 Session Created Live Session Created (2020-11-27 S00835, ImageSaveNum: 835001) 20:20:31   Scope Switched On Telescope Power has been switched on via UPB Powerbox. 20:22:26   Services Started Observatory Services started 20:22:34 Observatory (Auto) Observatory placed in Fully-Automated Mode 20:22:38 Session Pending Session pending (2020-11-27) 20:22:40 Session Initiating Session initiating (2020-11-27) 20:22:42   Plan Requested Observing Plan requested from AstroPlan (1.17.5) 20:24:05   Plan Loaded Observing Plan loaded to queue (2020-11-27 V1 BEST PLAN, Plan ID: 570) 20:24:18   Camera1 Connected SBIG Camera Connected (set point -20°C) 20:24:22   Telescope Connected Telescope Connected (TheSky6) 20:24:32 Session Equilibration Session ready for dome & camera equilibration 20:25:24   Dome Opened Dome opened (opening time 45s) 20:25:39 Session Running Session running 20:25:40   Queue Started Observing Queue started (43 targets selected) 20:26:44       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:31:54       Focusing Completed Foc1 AutoFocus Completed (Profile No 1) 20:32:34       Focusing Failed Foc1 focusing failed - star lost 20:32:38       Focusing Started-Foc2 Foc2 Focusing Started (Secondary Scope, using ShCap) 20:34:56       Focusing Completed Foc2 AutoFocus Completed (Profile No 2, wide) 20:36:49       Focusing Completed Foc2 AutoFocus Completed (Profile No 2) 20:37:06       Focusing Checked Foc2 Focusing Check Succeeded 20:37:39     Target Started (1/43) Target started (1/43, 61 Cyg) 20:40:48       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:45:40       Focusing Completed Foc1 AutoFocus Completed (Profile No 3) 20:48:21       Focusing Completed Foc1 AutoFocus Completed (Profile No 3) 20:49:33     Target Completed Target partially completed (1/43, 61 Cyg) 20:49:35     Target Started (2/43) Target started (2/43, GCVS Z And) 20:51:57       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 20:54:47       Focusing Completed Foc1 AutoFocus Completed (Profile No 4) 20:58:31     Target Completed Target completed (2/43, GCVS Z And) 20:58:33     Target Started (3/43) Target started (3/43, GCVS RX And) 21:06:40     Target Completed Target partially completed (3/43, GCVS RX And) 21:06:42     Target Started (4/43) Target started (4/43, 184P/Lovas) 21:09:39       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 21:19:50     Target Completed Target completed (4/43, 184P/Lovas) 21:19:52     Target Started (5/43) Target started (5/43, WDS GRB 34) 21:22:31       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:25:16       Focusing Completed Foc1 AutoFocus Completed (Profile No 5) 21:27:28     Target Completed Target completed (5/43, WDS GRB 34) 21:27:31     Target Started (6/43) Target started (6/43, NGC 514) 21:30:26       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:33:18       Focusing Completed Foc1 AutoFocus Completed (Profile No 6) 21:44:21     Target Completed Target completed (6/43, NGC 514) 21:44:24     Target Started (7/43) Target started (7/43, C/2019 L3 (ATLAS)) 21:46:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 21:49:34       Focusing Completed Foc1 AutoFocus Completed (Profile No 7) 21:55:36     Target Completed Target completed (7/43, C/2019 L3 (ATLAS)) 21:55:38     Target Started (8/43) Target started (8/43, GCVS HH And) 21:57:20       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:00:20       Focusing Completed Foc1 AutoFocus Completed (Profile No 8) 22:02:02     Target Completed Target completed (8/43, GCVS HH And) 22:02:50     Target Started (9/43) Target started (9/43, GCVS S Cyg) 22:05:43       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:08:33       Focusing Completed Foc1 AutoFocus Completed (Profile No 9) 22:18:16     Target Completed Target completed (9/43, GCVS S Cyg) 22:18:18     Target Started (10/43) Target started (10/43, C/2020 M3 (Atlas)) 22:22:08       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 22:23:40   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 22:26:20   SoftSuspend Cancelled Soft Suspend is cancelled due to Improved Conditions 22:28:33     Target Completed Target completed (10/43, C/2020 M3 (Atlas)) 22:29:06     Target Started (11/43) Target started (11/43, GCVS U And) 22:31:32       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:34:17       Focusing Completed Foc1 AutoFocus Completed (Profile No 10) 22:43:57     Target Completed Target completed (11/43, GCVS U And) 22:43:59     Target Started (12/43) Target started (12/43, GCVS SS Cyg) 22:46:44       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 22:49:34       Focusing Completed Foc1 AutoFocus Completed (Profile No 11) 22:53:09     Target Completed Target completed (12/43, GCVS SS Cyg) 22:58:25     Target Started (13/43) Target started (13/43, 156P/Russell-LINEAR) 23:01:35       Focusing Skipped Foc1 focusing skipped - star is lost (TCF-S) 23:11:01     Target Completed Target completed (13/43, 156P/Russell-LINEAR) 23:12:39     Target Started (14/43) Target started (14/43, GCVS GK Per) 23:14:54       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:17:45       Focusing Completed Foc1 AutoFocus Completed (Profile No 12) 23:20:15   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 23:20:41     Target Completed Target completed (14/43, GCVS GK Per) 23:20:43   Queue Paused Queue paused for Session Suspension 23:20:45 Session Suspended Session suspended 23:21:35   Dome Closed Dome closed (closing time 50s) 23:29:31 Session Resuming Session resuming 23:30:03     Target Cancelled Target cancelled (15/43, GCVS FO Ori) due to other condition 23:30:16   Dome Opened Dome opened (opening time 45s) 23:30:18 Session Running Session running 23:30:20   Queue Resumed Observing Queue resumed 23:30:22     Target Started (16/43) Target started (16/43, GCVS RR Tau) 23:32:43       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 23:35:32       Focusing Completed Foc1 AutoFocus Completed (Profile No 13) 23:41:32     Target Completed Target completed (16/43, GCVS RR Tau) 23:41:34     Target Started (17/43) Target started (17/43, GCVS SY Cnc) 23:44:40       Focusing Skipped Foc1 focusing skipped - star is lost (TCF-S) 23:48:47     Target Completed Target completed (17/43, GCVS SY Cnc) 23:51:01     Target Started (18/43) Target started (18/43, 398P/Boattini) 23:56:35       Focusing Skipped Foc1 focusing skipped - unable to find a star (TCF-S) 23:59:24   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 00:06:32     Target Completed Target completed (18/43, 398P/Boattini) 00:06:34   Queue Paused Queue paused for Session Suspension 00:06:36 Session Suspended Session suspended 00:07:19   Dome Closed Dome closed (closing time 45s) 00:14:07     Target Cancelled Target cancelled (19/43, GCVS CN Ori) due to cloud 00:24:05     Target Cancelled Target cancelled (20/43, GCVS DY Per) due to other condition 00:30:51 Session Resuming Session resuming 00:31:36   Dome Opened Dome opened (opening time 45s) 00:31:38 Session Running Session running 00:31:40     Target Started (21/43) Target started (21/43, GCVS CM Tau) 00:31:42   Queue Resumed Observing Queue resumed 00:42:07   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 00:42:12 Critical Cloud Alert Critical Cloud Alert (Obs.Manager will close the Shutter) 00:42:14   HardSuspend Called Hard Suspend is called due to Critical Conditions (cloud) 00:43:24     Target Aborted (21/43) Target aborted (21/43, GCVS CM Tau) due to cloud 00:43:26   Queue Paused Queue paused for Session Suspension 00:43:28 Session Suspended Session suspended 00:44:18   Dome Closed Dome closed (closing time 45s) 01:04:01     Target Cancelled Target cancelled (22/43, Scholz's Star) due to cloud 01:14:26     Target Cancelled Target cancelled (23/43, GCVS NV Ori) due to cloud 01:22:45     Target Cancelled Target cancelled (24/43, GCVS FU Ori) due to cloud 01:32:21     Target Cancelled Target cancelled (25/43, GCVS SU Tau) due to other condition 01:32:27 Session Resuming Session resuming 01:33:12   Dome Opened Dome opened (opening time 45s) 01:33:14 Session Running Session running 01:33:16     Target Started (26/43) Target started (26/43, GCVS U Mon) 01:33:18   Queue Resumed Observing Queue resumed 01:35:53       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 01:38:42       Focusing Failed Foc1 focusing failed - failed QC check (Ambiguous) 01:44:18     Target Completed Target completed (26/43, GCVS U Mon) 01:44:20     Target Started (27/43) Target started (27/43, GCVS U Gem) 01:45:43   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 01:47:43     Target Failed Target failed due to cloud (27/43, GCVS U Gem) 01:47:45   Queue Paused Queue paused for Session Suspension 01:47:47 Session Suspended Session suspended 01:50:08   Dome Closed Dome closed (closing time 50s) 01:52:22     Target Cancelled Target cancelled (27/43, GCVS U Gem) due to cloud 01:57:44   Camera1 SetPoint -25°C SBIG Camera Set Point Temperature Updated (new set point -25°C) 02:01:50 Session Resuming Session resuming 02:02:35   Dome Opened Dome opened (opening time 45s) 02:02:37 Session Running Session running 02:02:39   Queue Resumed Observing Queue resumed 02:02:41     Target Started (28/43) Target started (28/43, NGC 2782) 02:18:46     Target Completed Target partially completed (28/43, NGC 2782) 02:18:48     Target Started (29/43) Target started (29/43, C/2018 N2 (ASASSN)) 02:23:45       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:26:34       Focusing Completed Foc1 AutoFocus Completed (Profile No 15) 02:36:19     Target Completed Target partially completed (29/43, C/2018 N2 (ASASSN)) 02:36:21     Target Started (30/43) Target started (30/43, GCVS DX Cnc) 02:39:45       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:42:45       Focusing Completed Foc1 AutoFocus Completed (Profile No 16) 02:47:06     Target Completed Target completed (30/43, GCVS DX Cnc) 02:47:08     Target Started (31/43) Target started (31/43, GCVS RZ LMi) 02:49:07       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 02:51:57       Focusing Completed Foc1 AutoFocus Completed (Profile No 17) 02:56:50     Target Completed Target completed (31/43, GCVS RZ LMi) 02:56:52     Target Started (32/43) Target started (32/43, UGC 6930) 02:59:13       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 03:02:14       Focusing Completed Foc1 AutoFocus Completed (Profile No 18) 03:12:46     Target Completed Target completed (32/43, UGC 6930) 03:12:49     Target Started (33/43) Target started (33/43, NGC 4277) 03:17:26       Focusing Skipped Foc1 focusing skipped - unable to find a star (TCF-S) 03:34:55     Target Completed Target completed (33/43, NGC 4277) 03:34:57     Target Started (34/43) Target started (34/43, LAMOST-HVS1) 03:37:36       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 03:40:37       Focusing Completed Foc1 AutoFocus Completed (Profile No 19) 03:43:39     Target Completed Target completed (34/43, LAMOST-HVS1) 03:43:59     Target Started (35/43) Target started (35/43, NGC 3643) 03:47:13       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 04:04:46     Target Completed Target completed (35/43, NGC 3643) 04:06:21     Target Started (36/43) Target started (36/43, M85) 04:09:40       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 04:12:41       Focusing Completed Foc1 AutoFocus Completed (Profile No 20) 04:21:14     Target Completed Target completed (36/43, M85) 04:21:23     Target Started (37/43) Target started (37/43, GCVS ER UMa) 04:23:46       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 04:26:48       Focusing Completed Foc1 AutoFocus Completed (Profile No 21) 04:30:30     Target Completed Target completed (37/43, GCVS ER UMa) 04:31:41     Target Started (38/43) Target started (38/43, GCVS CN Leo) 04:36:38       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 04:45:09     Target Completed Target completed (38/43, GCVS CN Leo) 04:45:12     Target Started (39/43) Target started (39/43, M61) 04:48:12       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 05:04:56     Target Completed Target completed (39/43, M61) 05:07:15     Target Started (40/43) Target started (40/43, GCVS AM CVn) 05:09:29       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 05:12:08       Focusing Completed Foc1 AutoFocus Completed (Profile No 22) 05:14:53     Target Completed Target completed (40/43, GCVS AM CVn) 05:16:48     Target Started (41/43) Target started (41/43, NGC 4559) 05:19:06       Focusing Skipped Foc1 focusing skipped - star is too dim (TCF-S) 05:36:11     Target Completed Target completed (41/43, NGC 4559) 05:39:10     Target Started (42/43) Target started (42/43, UGCA 244) 05:41:13       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 05:44:21       Focusing Completed Foc1 AutoFocus Completed (Profile No 23) 06:00:25     Target Completed Target completed (42/43, UGCA 244) 06:01:32     Target Started (43/43) Target started (43/43, UGCA 220) 06:05:09       Focusing Started-Foc1 Foc1 Focusing Started (TCF-S) 06:08:16       Focusing Completed Foc1 AutoFocus Completed (Profile No 24) 06:20:18   SoftSuspend Called Soft Suspend is called due to Deteriorating Conditions (too few stars) 06:22:54   SoftSuspend Cancelled Soft Suspend is cancelled due to Improved Conditions 06:36:55     Target Completed Target completed (43/43, UGCA 220) 06:36:58   Queue Completed Job Queue completed 06:37:00 Session Closing Session closing 06:37:55   Dome Closed Dome closed (closing time 50s) 06:38:53   Dome Parked Dome parked (parking time 51s), Az: 90.1 deg 06:39:40   Telescope Parked Telescope parked (parking time 42s) 06:40:10   Telescope Switched Off Telescope Power has been switched off via UPB Switch. 06:40:57   Services Stopped Night Services stopped 06:40:59 Session Housekeeping Housekeeping Started (Cleanup FITS, Create Fits Summary, Transfer Files) 06:41:20 Session Finished Session Finished

Session Alerts

Time     Alert Detail 04:22:31 Dome Discrepency Difference between Telescope Az and Dome Az is > 8 deg (GCVS ER UMa) 06:04:02 Dome Discrepency Difference between Telescope Az and Dome Az is > 8 deg (UGCA 220)

Back to Top

Operational Issues (2020-11-27 S835)

• Critical Issues (0)
• Major Issues (0)
• Minor Issues (3)
• Continuous Improvement (1)

[ Prev | Next ]

Critical Issues

• None

Major Issues

• None

Minor Issues

• An unnecessary delay of 4s is being added prior each Focus Frame. A delay of 4s is being applied before each focus frame. For a profile with 14 points this corresponds to an extra 56s of wasted time. This is nearly an extra minute ! (or more than a minute if any points needed to be repeated). Examining the code show the addition of an extra 4s isn't formally set,  the TakeFocusImage() routine uses whatever is set in Camera Properties.   Changing it to 0 whilst image is being taken doesn't work as the routine records the delay setting before taking the focus frame and reapplies the saved setting once the focus frame is completed.    Code changed to explicitly set Camera.Delay to 0s prior to taking Focus Frames. 
  Fixed 2020-11-28 (AstroMain 3.32.10)
   
• Final 3 frames of Target 1/43 (61 Cyg) , 7 x 2s, R were cancelled to prevent the target from overruning its time slot.  Whilst this is as per current design, and is absolutely required when taking say 5 x 180s C frames, where delaying 3 x 180s (9 minutes) can not possibly be allowed,  a delay of 3 x 2s (ie 6s or  18s including 2x2 binned image download time) should probably be allowed in order to get the target completed. What is the appropriate cutoff ?   Code changed so that cancellation only happens for exposures >5s.
  Fixed 2020-11-28 (AstroMain 3.32.10)
   
• Foc2 Wide Search Profile was plotted ok or was partially overwritten.  Profile 2 (Wide) explored the focus range 8370 to 9120 and found best focus at 8770,  however the graph (FocusProfile.20201127.profile02_wide.gif) shows a Foc1 style range (1500 to 6000)  with data points from 8370-9120 plotted off to one side of the graph. the data table to right of graph looks normal. The corresponding graph on website (Session.Foc2Profile2.gif) is correct and displays the range 8250 to 9150, suggesting that the graph has somehow become overwritten when starting Foc1  Profile 3 (Wide). This also used a 1500 to 6000 x-axis range confirming the diagnosis. Fix attempted by placing FP.Number = gProfileNo + 1  before the call to objConsole.SetUpFocusProfile() routine.
  Fixed attempted 2020-11-28 (AstroMain 3.32.10)

Continuous Improvement 

• Check if GRB Alert at 06:29 (2020-11-28) could have been reacted to. At 06:29 a GCN/Swift Notice was received by AstroVOE (1.5)  for a GRB in Bootes at a suitable sky position (Az 99/Alt 37.7), and with a suitable sky darkness (SunAlt -13.6) and suitablly small positional error (0.1 deg). AstroVOE rejected the alert on the basis that the 'Observatory isn't operating in automated mode and can't react.'  Checking logs shows that the Observatory was under Automated control at this time, taking Image 7/9  for Target 43/43 (UGCA 220). Whilst this was the last target in the plan there is no reason why the observatory couldn't have reacted. Why did AstroVOE think that the observatory wasn't operating in automated mode ?   Observatory is currently on GMT time - so no difference between local time and UT time.  Should the GRB have been saved to Database and ToO issued for immediate reaction, it would have been interesting to see how the observatory would have reacted with it being that lat target in the plan and close to the Plan's End Time (would the GRB observation been allowed to finish or would it have been cut short ?)
  Although a SoftSuspend had called at 06:20:18, it was lifted at 06:22:54, so Observatory was operating in normal Running mode. The observatory didn't enter into a closing state until 06:37.  AstroVOE code show that the above rejection message would only have been given if ObsStatus.ObservatoryMode <> ObsMode.FullyAutomated, and this is read from an intermediary file (ObsStatus.dat) every 6s or so. Whilst session was started using AutoStart, mode would have switched to FullyAutomated and then remained in this state till session was ended at 06:41.  The Swift GRB Alert was followed by Fermi GRB Alerts at 06:29:40 and 06:29:49 but these failed due to un-useable positional errors (31.6-33.5deg). As they arrived some 40s later they are not factors in the failure to react to the Swift Alert.  Apart from the AstroMain logs there is no records are kept to show the status of the ObsStatus.dat file. The same file is also accessed by AstroGuard and obviously AstroMain when it writes the file.  In the event of a momentary issue reading the ObsStatus.dat file, AstroMain will catch the exception and set ObsStatus.ObservatoryMode to ObsMode.Undefined, but the time of such exceptions are not logged.   Later review at 2020-12-05 showed that some 59 exceptions had occurred during the past 6-7 day period,   indicating that 1) an exception is the most probably reason why the observatory was deemed to not be operating in automated at time of 06:29 GRB alert when it was in fact operating. 2) number of exceptions isn't overly excessive and the particular fix that has been implemented shouldn't allow a rare exception from blocking a obsrevatory response to a GRB alert.
  Fixed 2020-11-28  (AstroVOE 1.5.1)
  
  2020-11-28T06:29:00 GCN/SWIFT NOTICE 61 Observation SWIFT_BAT_GRB_POSITION 1009679 GRB_ALERT
Name: GRB Swift 1009679
Trigger No: 1009679
RA: 14.9°
Dec: 26.7°
Pos Error: 0.1°
Con: Boo (Bootes)
GRB Alt: 37.7° (Clair Observatory)
GRB Az: 99.2° (Clair Observatory)
Sun Alt: -13.6° (Clair Observatory)
Moon Dist 140.6°
Moon Illum: 95.9%
Observatory isn't operating in automated mode and can't react.

[ Prev | Next ]

Back to Top