Low Resolution Spectrograph 2 (LRS2)

  • LRS2-R was deployed in November 2015

  • An unscheduled warm up in January 2016 occurred. The unit was returned to Austin.

  • LRS2-R and LRS2-B deployed in February 2016.

  • Reliable offsetting between LRS2-B and LRS2-R achieved in April 2016

  • Data automatically transferred to TACC in April 2016

  • April 2016 one controller of LRS2-B was found to be dropping bits as was swapped May 2016.

  • Blind offsets using ACAM and gstar predictions achieved in May 2016

  • The UV chip on LRS2 was replaced in November 2016.

  • The LRS2-B spectrograph was cold-pumped Oct 2019, and has been extremely stable and productive.

  • As of Jan 2020 the LRS2 exposure time calculator is now available for PIs

  • In late Feb 2020 the CCD controller for LRS2-R was replaced after it became unreliable

  • In late Oct 2022 the CCD controller for LRS2-B was replaced after it showed similar signs of unreliability

  • Last updated: Sat, 30 Dec 2023 02:11:11 +0000 stevenj


    The Telescope

    Technical Overview

    Object Observability


    Non-sidereal observations



    LRS2 Summary

    LRS2 Details

    LRS2 Fiber Layout and Position Angle

    LRS2 Throughput

    LRS2 Observing details


    VIRUS - Summary

    VIRUS - Setting up on targets

    VIRUS - Misc details

    VIRUS - Throughput and sensitivity

    VIRUS - low surface brightness sensitivity

    VIRUS - Dithers, IFUs, Tiling

    VIRUS - Tiling observations

    Habitable Zone Planet Finder (HPF)

    HPF Details

    HPF Setting up on targets

    HPF Throughput and Exposure Meter

    HPF Data Reductions

    HRS-2 (in development)

    HRS-2 Summary

    HRS-2 Details

    HRS-2 configurations

    HRS-2 exposure meter

    HRS-2 Position Angle and Fiber layout

    HRS-2 Throughput

    Old Instruments

    HRS - old

    LRS - old

    MRS - old

    Program Preparation

    Web Management System