Mirror cover closure failure

Monday, November 4, 2024

4K failed quadrant

Sunday, October 27, 2024

TCS power on and brake release failure

Monday, August 5, 2024

Dome rotation issues

Sunday, June 9, 2024

Horizon limit and high declination

Monday, June 3, 2024

4K image noise

Thursday, May 2, 2024

Guider anomoly oddity

Saturday, February 24, 2024

HE-to-detector cable issue

Saturday, February 17, 2024

JSkyCalc window hung

Friday, February 16, 2024

Mirror cover(s) fail to close

Tuesday, February 13, 2024

RA motion failure (mechanically seized... sort of) x2

Sunday, February 4, 2024

RA motion failure (mechanically seized)

Thursday, January 18, 2024

Mirror cover [close] failure

Friday, January 12, 2024

Guide probe motion failure (y-axis)

Thursday, January 11, 2024

MAJOR RA motion failure

Tuesday, January 9, 2024

Weather station issues

Tuesday, September 12, 2023

Dome motion failure (motors)

Thursday, June 29, 2023

Prospero hangup

Monday, June 26, 2023

Image Saturation (4K)

Saturday, June 11, 2022

Dome/Telescope Synchronization Issue

Friday, June 10, 2022

Prospero: data-write failure and lost (and found) files

Wednesday, May 25, 2022

Dome HOME failure

Tuesday, April 26, 2022

Zenith set positioning

Monday, April 18, 2022

Dome failure. This time it would not start to rotate.

Thursday, February 3, 2022

Dome HOME failure, continued...

Monday, January 24, 2022

Dome HOME failure

Saturday, January 15, 2022

Focus motion issues

Monday, January 3, 2022

Mirror cover open/close status failure

Sunday, December 12, 2021

Mirror support, HP2 failure

Wednesday, December 8, 2021

Mirror support system failure

Tuesday, November 9, 2021

Focus creep

Monday, November 1, 2021

Dome rotation, it just keeps spinning

Friday, October 29, 2021

Spectral artifacts in OSMOS

Friday, October 15, 2021

Slew motion confusion when guiding is left ON

Thursday, October 14, 2021

Guide probe motion failure

Wednesday, October 13, 2021

Monitor power issues

Monday, October 11, 2021

TCS oddities

Thursday, September 23, 2021

Telescope focus failure

Sunday, September 12, 2021

MIS guide probe failure

Sunday, September 5, 2021

xmis2 functionality failures, revisiting SOPs

Friday, September 3, 2021

Rotator motion failure

Tuesday, July 6, 2021

B4K Pattern Noise

Monday, June 7, 2021

Prospero Writing Only Every Other File

Tuesday, June 1, 2021

Guide Probe Sticking(?)

Monday, May 31, 2021

RA motion failure

Tuesday, May 18, 2021

Guider connection failure

Sunday, May 16, 2021

All-sky camera down

Monday, April 19, 2021

TCS cycling and mirror covers

Wednesday, March 10, 2021

Our tenuous air bag support system

Wednesday, November 11, 2020

Dome Shutter Not Opening

Saturday, November 7, 2020

Guide Probe Focus Failure

Thursday, February 27, 2020

Dome Shutter Control Issues

Wednesday, February 26, 2020

Telescope Motion Failure(s)

Wednesday, February 19, 2020

Telescope Focus Issues (hardware?)

Wednesday, February 5, 2020

Dome Shutter Noise

Sunday, December 15, 2019

Guide Probe Hangup

Saturday, December 14, 2019

Dome HOME failure

Friday, December 13, 2019

Pointing Issues(?)

Friday, December 6, 2019

Another Instance of RA Preload Bolt Failure

Thursday, December 5, 2019

FOV Obstruction in OSMOS

Wednesday, November 6, 2019

Focus Motion Failures

Saturday, October 19, 2019

RA Preload Bolt Failure

Thursday, October 10, 2019

RA Jumps While Tracking

Friday, September 6, 2019

Echelle CCD Readout Weirdness

Monday, September 2, 2019

OSMOS Producing Low Image Counts

Tuesday, August 27, 2019

Ensure brakes are OFF

Sunday, August 11, 2019

Power Issue to the Andor PC

Wednesday, July 31, 2019

MIS Guide Probe Failure, y-stage origin limit

Monday, July 29, 2019

Dynamic OSMOS Dispersion, FYI

Tuesday, July 2, 2019

RA Drive Preload Plate Bolt Sheered

Saturday, June 22, 2019

Rotator Encoder Issue

Friday, June 21, 2019

Tracking Slow - MOVE WEST!

Thursday, June 6, 2019

TCS/Tracking Issues

Tuesday, June 4, 2019

Airbag Support Failure

Tuesday, June 4, 2019

No Light on Detector (4K) Weirdness

Sunday, June 2, 2019

Rotator - Unexpected Impact on Cabling

Sunday, June 2, 2019

Rotator - Unexpected Rotation

Thursday, May 30, 2019

System Restarts - Know your Hardware

Sunday, May 12, 2019

CCDS Slit-Viewer Image Artifact

Friday, May 10, 2019

Prospero Readout Issue, Again

Saturday, May 4, 2019

Prospero Readout Issue

Friday, May 3, 2019

HA Friction Drive Adjustment

Wednesday, April 10, 2019

Telescope Motion and Guiding Issues

Thursday, April 4, 2019

RA Motion Failure

Saturday, March 30, 2019

Guide Probe Motion Failure

Wednesday, March 27, 2019

Fill Tube Failure

Sunday, March 3, 2019

Airbag Failure--Trefoil

Sunday, February 24, 2019

Rotator GUI-controller Failure

Thursday, February 7, 2019

Guider Focus Failure, fixed for real this time(?)

Tuesday, January 29, 2019

Some Startup Hiccups...

Friday, January 25, 2019

Guider Focus Failure

Monday, January 14, 2019

Focus Motion Failure

Friday, January 4, 2019

Mirror Covers Fail to Open

Thursday, January 3, 2019

Temperature-dependent Focus Compensation

Tuesday, December 4, 2018

Peripherals Interface Failure x2

Tuesday, November 20, 2018

Peripherals Interface Failure

Tuesday, October 2, 2018

Telescope Focus Failure Revisited 2

Saturday, September 29, 2018

Temperature-Compensating Focus Routine

Thursday, September 27, 2018

Guider Anomaly

Monday, September 24, 2018

Failure to Complete Slew

Monday, September 24, 2018

TCS-JSkyCalc Connection

Monday, September 10, 2018

IC Failures(?)

Friday, September 7, 2018

Comp Lamps and Prospero Scripts(?)

Thursday, September 6, 2018

Bumping the Dome Workaround (?)

Monday, June 4, 2018

Echelle Readout Failure (Revisited from 05/09)

Monday, June 4, 2018

Guiding Issues

Friday, June 1, 2018

TCS Connectivity and Tracking Issues

Friday, June 1, 2018

MIS Issue when Changing Filter Position

Friday, June 1, 2018

One More Comment on the Dome Issues

Monday, May 14, 2018

Oh the Dome...

Saturday, May 12, 2018

TCS Command Issues

Wednesday, May 2, 2018

Telescope Focus Failure Revisited

Friday, April 13, 2018

Telescope Focus Shift

Saturday, April 7, 2018

Dec Jump

Tuesday, March 20, 2018

More Instrument Rotator Clarification

Wednesday, March 14, 2018

ModSpec Shutter Connection

Thursday, March 1, 2018

Telescope Focus Failure

Wednesday, February 28, 2018

Instrument Rotator Clarification

Saturday, February 24, 2018

Condensation on Detector Window

Saturday, February 17, 2018

Data Writing (/hiltner)

Monday, February 12, 2018

Continued Guider Issues

Thursday, February 8, 2018

Guider Issues

Tuesday, February 6, 2018

Remote Access Device Failure

Monday, February 5, 2018

Fill Straw Frozen to Dewar

Wednesday, January 10, 2018

Dome Home Failure

Monday, January 8, 2018

B4K Failure

Sunday, January 7, 2018

Focus-Guider Interplay and Telescope Run Away

Friday, December 22, 2017

B4K Chip Quadrant Failure

Thursday, December 21, 2017

Dome Run Away & TCS Restart

Wednesday, December 20, 2017

TCS PC Display & Airbag Control Failures

Monday, December 11, 2017

R4K, more on “icicles”

Sunday, December 10, 2017

R4K "Icicles"

Friday, December 8, 2017

Focus Issues in New TCS(?)

Sunday, November 19, 2017

Prospero/OSMOS Command Issue

Sunday, November 5, 2017

Rotator Positional Errors

Thursday, October 26, 2017

osctrtask Hangup

Thursday, October 26, 2017

Dome/Telescope (new TCS)

Thursday, October 19, 2017

Guiding Issues

Monday, October 16, 2017

New Hand Paddle Focus Button Sensitivity

Sunday, October 15, 2017

Dome Home Failure

Wednesday, October 11, 2017

Echelle Readout Failure

Wednesday, October 11, 2017

MIS Guider Failure

Thursday, September 21, 2017

Initialization (Prospero and Data Handlers) Issues

Monday, September 4, 2017

Some Prospero Issues and Limit Reached

Thursday, August 31, 2017

TCS Pointing/hiltner Timestamp Issue

Thursday, August 24, 2017

Hiltner Reboot Failure

Tuesday, July 18, 2017

Erroneous Pointing, Limit Switches

Thursday, June 29, 2017

Pointing Errors

Sunday, June 18, 2017

Guide Probe Stage Motion Failure

Tuesday, June 13, 2017

Dome Encoder Error

Thursday, June 8, 2017

JSkyCalc-to-MIS Link Broken

Friday, June 2, 2017

JSkyCalc-xtcs Coordinate Input Confusion

Saturday, May 27, 2017

SDSS-gri Filter Anomaly Possibly Detected

Friday, May 26, 2017

osctrtask issues

Thursday, May 4, 2017

V-band Image Counts

Monday, May 1, 2017

RA Drift

Friday, April 28, 2017

Network Connectivity Issues

Tuesday, April 25, 2017

Rotator Offset Error

Sunday, April 9, 2017

We’ve got bears

Thursday, April 6, 2017

Dome AZ Cable Disconnect

Thursday, March 30, 2017

Prospero Connection Issues, IC & TC

Saturday, March 25, 2017

Airbag Control PC Failure

Saturday, March 25, 2017

B4K HE Woes

Sunday, March 19, 2017

Dome “Fugue” State

Monday, March 13, 2017

Telescope Motion Failure, hand paddle

Tuesday, February 28, 2017

Mirror Cover Fail-to-Open

Tuesday, February 28, 2017

Slit Acquisition Software (OSMOS)

Sunday, February 26, 2017

Duplicate files and Frozen Prospero

Friday, February 24, 2017

Queue Observing Issues

Monday, January 30, 2017

Multiple Issues x2

Thursday, January 26, 2017

RA Motion Issues

Wednesday, January 18, 2017

Multiple Issues

Sunday, December 18, 2016

Guide probe Issue at Large Rotator Angle

Monday, December 12, 2016

Light Not Reaching Detector (ModSpec/Nellie)

Monday, December 5, 2016

Light Not Reaching Detector (ModSpec/Echelle)

Sunday, December 4, 2016

Dome Manual Control Button (Yellow Button)

Saturday, December 3, 2016

West Mirror Cover Fail-to-Open

Thursday, December 1, 2016

Proper LN2 Fills

Thursday, November 24, 2016

osqlsp Software Issue (OSMOS)

Friday, November 18, 2016

Mirror Cover and Dome Rotation Failures

Tuesday, November 15, 2016

Rotator Motion Failure

Thursday, November 3, 2016

Humidity & Weather Sensing

Sunday, September 11, 2016

Dome Home Error

Thursday, September 8, 2016

Propsero Data System Issues

Tuesday, August 16, 2016

Dome Tracking Failure

Tuesday, August 16, 2016

Guider Failure

Sunday, August 7, 2016

Rotator Connection Failure

Saturday, August 6, 2016

Mirror Covers

Friday, August 5, 2016

Dome tracking issues

Monday, June 27, 2016

Echelle Failure

Monday, June 20, 2016

OSMOS IE hung

Friday, June 3, 2016

Tracking stuck ON

Wednesday, June 1, 2016

OSMOS and certain KPNO Filters

Monday, May 9, 2016

Guide Probe and OSMOS

Monday, May 9, 2016

R4K Quadrant Noise

Wednesday, May 4, 2016

Guide Probe Motion Failure

Thursday, April 14, 2016

Setting RA/Dec Encoders (input fields)

Monday, April 4, 2016

Andor (slit-view) Failure

Thursday, March 3, 2016

Prospero Com Errors

Monday, February 29, 2016

RA Tracking Oscillations

Wednesday, February 24, 2016

Airbag System Fault, Small Visible Motions

Saturday, January 30, 2016

Dec Moving (North)

Monday, January 11, 2016

OSMOS Disperser Wheel Timeout

Saturday, December 26, 2015

Mirror Cover Pneumatics Issue

Tuesday, December 15, 2015

Guider Failure

Tuesday, December 15, 2015

Closing Mirror Covers

Sunday, December 13, 2015

Dewar Warmed Up

Friday, December 11, 2015

Documentation and Power Blips

Thursday, December 10, 2015

Tilt Sensor Display Errors

Saturday, November 28, 2015

Dome Rotations and Erroneous TCS Messages

Monday, November 23, 2015

Dome Motion Issues

Saturday, November 21, 2015

Guider Communications Issues

Monday, November 16, 2015

TC

Friday, November 13, 2015

Rotator Motion Failure

Wednesday, November 11, 2015

Guide Probe Motion Failure

Sunday, November 8, 2015

“Coils Appear to be Frozen”

Saturday, October 24, 2015

Guider Exposure Window Shrinks

Friday, October 23, 2015

TCS START Button Does Not Turn on TCS

Thursday, October 15, 2015

Prospero-MIS Communication Issues

Tuesday, September 8, 2015

Guide Probe Motion Failure

Saturday, September 5, 2015

OSMOS Disperser Motion Failures

Friday, September 4, 2015

R4K Saturation Issues

Friday, June 12, 2015

Filter-Dependent Aberration with OSMOS

Thursday, June 11, 2015

Guide Probe Motion Failure

Thursday, April 23, 2015

Dome Rotation and Encoder Errors

Monday, March 30, 2015

Dome Encoder Issues, Fugue State?

Sunday, March 29, 2015

B4K 1Kx1K ROI Failure

Wednesday, March 25, 2015

OSMOS/4K Chip Readout Failure

Saturday, March 14, 2015

Telescope Motion when TCS PC Reboot

Thursday, March 12, 2015

Dome Encoder Failure

Thursday, March 12, 2015

Rotator Position Readout Error

Friday, January 23, 2015

Prospero IE Hardware Disconnect

Wednesday, January 21, 2015

Dome Shutter Motion Failure

Tuesday, December 23, 2014

RA Tracking Drive Failure

Wednesday, December 10, 2014

Owl Binning & Subarray Initialization

Monday, November 10, 2014

Guide Probe, x-axis hung

Thursday, October 30, 2014

ModSpec Shutter Controller Failure

Sunday, August 31, 2014

TCSlink on Prospero “Down”

Saturday, June 7, 2014

Erroneous Encoder Issue Warning

Monday, June 2, 2014

Auto Dome Status Confused

Wednesday, May 21, 2014

Telescope Hand Paddle Issues

Saturday, May 17, 2014

Scripts Missing* & Failing

Wednesday, May 7, 2014

Guider Drift/Failure

Friday, April 25, 2014

Dome Motion Failure

Wednesday, April 23, 2014

Continuous North Motion at Guide Speed

Tuesday, April 22, 2014

Prospero Data Interruption

Saturday, April 5, 2014

Guider Image Motion and Focal Issues

Monday, March 17, 2014

JSkyCalc Errors

Wednesday, January 8, 2014

Dec Drive Friction System (Lost Motion)

Friday, June 21, 2013

OWL Nonresponsive

Friday, May 24, 2013

Rotator Angle Discrepancy

Tuesday, May 14, 2013

CCDS Acq. Camera Saturation/Brightness

Monday, May 6, 2013

Erroneous Pointing

Monday, May 6, 2013

OSMOS MOS Mask Deformities

Saturday, April 13, 2013

OSMOS Hardware Control Failure

Monday, April 8, 2013

Guider Erroneous Correction Pulses

Monday, March 18, 2013

RA Drift Issue (?)

Monday, March 18, 2013

RA Readout Drift (Lost Pulses)

Sunday, March 3, 2013

Mirror AC Control System Failure

Sunday, February 3, 2013

Hung xmis2

Wednesday, January 16, 2013

Frozen Water Pipes

Tuesday, January 15, 2013

Rotator Issues when not at Zenith

Monday, January 14, 2013

Prospero Data Collection Failure

Saturday, December 8, 2012

Finder Mirror Motor Drivetrain

Tuesday, November 20, 2012

Airbag Pressure Failure

Saturday, October 13, 2012

Vesuvius Authorization Failure (8K)

Tuesday, October 9, 2012

PSF Triangularity

Monday, October 8, 2012

Prospero Command Window Freezing

Saturday, October 6, 2012

OSMOS Component Comm Failure

Friday, October 5, 2012