Telescope Focus Issues (hardware?)

Wednesday, February 5, 2020

Problem(s) Encountered:

Focus got stuck again. Noticed it during evening twilight when I tried to run the focus4k prospero routine. No means...

Dome Shutter Noise

Sunday, December 15, 2019

Problem(s) Encountered:

Dome shutter is making a loud rhythmic racket near the top of its travel, louder than I remember.


Guide Probe Hangup

Saturday, December 14, 2019

Problem(s) Encountered:

Guide probe stopped responding to commands and stayed in place. 


...cured this by...

Dome HOME failure

Friday, December 13, 2019

Problem(s) Encountered:

I used the software switch to send the dome home at the end of the night and rather than going home, it kept rotating...

Pointing Issues(?)

Friday, December 6, 2019

Problem(s) Encountered:

Lost pointing big time at the end of the night. Kept resetting the offsets to the wrong objects. When I set the telescope...

Another Instance of RA Preload Bolt Failure

Thursday, December 5, 2019

Problem(s) Encountered:

One of the bolts on the RA preload plate sheared shortly after opening. And then a second. And then a third. Decided...

FOV Obstruction in OSMOS

Wednesday, November 6, 2019

Problem(s) Encountered:

While taking spectroscopic and photometric flats, there appeared a dark blob right of center in each image. Tried...

Focus Motion Failures

Saturday, October 19, 2019

Problem(s) Encountered:

Had an issue with the telescope focus tonight. I noticed it wasn't maintaining the focus I set at the beginning of...

RA Preload Bolt Failure

Thursday, October 10, 2019

Problem(s) Encountered:

I heard a slightly disconcerting noise when slewing to a target. I quickly looked around the dome mid-slew to make...

RA Jumps While Tracking

Friday, September 6, 2019

Problem(s) Encountered:

About a dozen times tonight, rather intermittently but perhaps more often in the north, the telescope would jump eastward...


2.4m Trouble Reports & Solutions

Recent trouble reports for the Hiltner 2.4m telescope.  Note that you may find it worthwhile to peruse the 2.4m reports as well in case your problem is instrument-related.

Scroll down for a link to the complete archives.

To open a simple and searchable database containing all archived trouble report solutions, click on the following links.  While there are individual links for each telescope, it is worthwhile to search both databases in the event that you experience trouble:

Hiltner 2.4m Trouble Report Database (2020Feb11)

McGraw-Hill 1.3m Trouble Report Database (2020Feb11)

Click Here for the Full Archive