HRS-2 (High Resolution Spectrograph) Instrument Summary

  • Based on the HRS developed by Bob Tull

  • CCD and instrument PI is Phillip MacQueen, McDonald Observatory, UT Austin

  • Fiber-coupled, single object with sky fibers

  • Bench-mounted in insulated chamber in spectrograph room in HET basement

  • Spectrograph enclosure temperature stabilized to about X K

  • Mosaic to two R-4 echelle gratings and white pupil design

  • R = 18000 to 105000

  • 390 to 1100nm wavelength coverage in two exposures, one octave in one exposure

  • CCD is 4096 x 4096 mosaic of 2 E2V 2kx4k CCDs. The blue-side CCD is standard silicon, and the red-side CCD is a deep depletion device.

  • Max value 262143 ADU; max safe value is 255k to avoid nonlinearity issues.

  • Better than XX meter/second long-term wavelength stability

  • Low scattered light

  • X% peak throughput on the sky

  • Funded by NSF and UT Austin

  • Commissioned in XXXXX

  • For target acquisition and auto-guiding notes, see the performance page

  • Our best estimate of the limiting magnitude performance can be found here




Last updated: Thu, 22 Oct 2015 15:18:54 -0500 shetrone



Overview

The Telescope

Technical Overview

Object Observability

Performance

Instruments

HRS-2

HRS-2 Summary

HRS-2 Details

HRS-2 configurations

HRS-2 exposure meter

HRS-2 Position Angle and Fiber layout

HRS-2 Throughput

LRS2

LRS2 Summary

LRS2 Details

LRS2 Fiber Layout and Position Angle

LRS2 Throughput

LRS2 Observing details

VIRUS

VIRUS - Summary

VIRUS - Details

VIRUS - Throughput

VIRUS - Fiber Layout and Position Angle

Old Instruments

LRS - old

Wavelength Calibration

Program Preparation

Web Management System

Other HET Documentation