Rotator failure
Problem(s) Encountered:
The rotator won't rotate.
Solution:
Power-cycling the rotator control box corrected the issue....
Dec oscillations
Problem(s) Encountered:
The very first target of the night was a standard star (BD +28 4211) at +28 degrees, and the telescope refused to...
Mirror cover closure failure
Problem(s) Encountered:
When I used the close mirror command, the west mirror cover did not close. I attempted to re-close the mirror covers...
4K failed quadrant
Problem(s) Encountered:
Upper right portion of CCD lost sensitivity. pressing on thick control cable seemed to fix it but the problem quickly...
TCS power on and brake release failure
Problem(s) Encountered:
Set up the telescope for some engineering work and found that the brakes would not release. Further investigation...
More tracking problems, jumps
Problem(s) Encountered:
The problem with E/W tracking, reported earlier, returned about01:30 local time.As a reminder, the telescope jumps...
Dome rotation issues
Problem(s) Encountered:
I discovered a sticky spot a little east of due north, where it can hang up if it's trying to track through (i.e.,...
Horizon limit and high declination
Problem(s) Encountered:
...on the last exposure the telescope sent me an approaching limits warning and then immediately said I hit the limit...
4K image noise
Problem(s) Encountered:
Noticed bands of elevated background noise at the top and bottom of the image (somewhat shaped like a negative of...
Guider anomoly oddity
Problem(s) Encountered:
I had just finished an exposure and was about to take some images to check the centering when the guide star jumped...
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 (2025Jan21)
•McGraw-Hill 1.3m Trouble Report Database (2025Jan21)