SOAR Issue Status

Updated on December 16, 2022, 4:52 am

This page provides a brief summary of the status of significant issues with the SOAR Telescope and its associated instrumentation. The emphasis is on issues that are internal to SOAR. There are two tables - one comprising known issues, and the second second listing resolved issues in approximate reverse chronological order of resolution. The lists comprise only recurrent issues; responses to problems reported on individual night reports are not provided.




Activity toward Resolution

Remote connection speed

Remote connections are slow, both for VNC and file downloads

Setting up secure remote connections using newer firewall technology; deadline for switch is nominally start of Semester 2023A

SOI not in service

SOI is not available because guider detector failed; can only be operated by “borrowing” the EM CCD from another guider

Move CCD from optical Nasmyth now that new guider has been implemented there.

RESOLVED ISSUES (After Jun 2022)


Date Resolved



Goodman internal flexure/jumps

Dec 2022

Spectra would shift or jump during longer observations

Visit from UNC repaired flexure compensation mechanism & trained local staff

Goodman internal scattering

Dec 2022

Internal reflection from camera barrel at certain (low) grating angles compromised flat fields and spectra

Anodized camera barrel replaced with a barrel with a low-reflectivity coating

Elevation brake faults

Nov 2022

Mount control generated false brake fault alarms

Implemented relevant part of new mount control hardware

Elevation limit at 79 degrees

Nov 2022

Damage to encoder tape prevented telescope from operating above ~79 degrees elevation

New hardware (see previous) bypasses encoder that “sees” the damaged portion of the tape; a more permanent solution is pending.

Rotator brake faults

Aug 2022

Mount control generate false IR rotator brake faults

Bypassed alarm trigger; will be fully resolved with new mount control hardware