The Hobby-Eberly Telescope: Performance upgrades, status, and plans

John A. Booth, Mark T. Adams, Edwin S. Barker, Frank N. Bash, James R. Fowler, John M. Good, Gary J. Hill, Phillip W. Kelton, David L. Lambert, Phillip J. MacQueen, Povilas Palunas, Lawrence William Ramsey, Gordon L. Wesley

Research output: Contribution to journalConference article

12 Citations (Scopus)

Abstract

The Hobby-Eberly Telescope (HET) is a fixed-elevation, 9.2-m telescope with a spherical primary mirror and a tracker at prime focus to follow astronomical objects. The telescope was constructed for $13.9M over the period 1994-1997. A series of extensive engineering upgrades and corrective actions have been completed recently, resulting in significantly improved delivered image quality and increased operational efficiency. The telescope's Spherical Aberration Corrector (SAC) optics were recoated with a highly reflective and durable broadband coating at Lawrence Livermore National Laboratory. The software mount model that maintains optical alignment of the SAC with the 11-m primary mirror array was recalibrated and improved. The acquisition and guiding optics for both the High Resolution Spectrograph (HRS) and the Low Resolution Spectrograph (LRS) were reworked and improved, allowing for better focus and SAC alignment monitoring and control. Recoating of the primary mirror segment array was begun. Telescope images of 0.82 arcseconds have been recorded for sustained periods in preliminary testing following the engineering upgrade, an improvement of 50% over previous best performance. Additional engineering upgrades are scheduled to consolidate these performance gains and to continue improving delivered image quality, throughput, and telescope operational efficiency. The HET is now capable of the science performance for which it was designed.

Original languageEnglish (US)
Pages (from-to)288-299
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5489
Issue numberPART 1
DOIs
StatePublished - Dec 24 2004
EventGround-based Telescopes - Glasgow, United Kingdom
Duration: Jun 21 2004Jun 25 2004

Fingerprint

Hobby-Eberly Telescope
Telescopes
Telescope
telescopes
Corrector
Aberration
Mirror
Spectrograph
Aberrations
Engineering
Image Quality
aberration
Mirrors
Optics
Spectrographs
engineering
mirrors
Optical Alignment
Image quality
spectrographs

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Booth, J. A., Adams, M. T., Barker, E. S., Bash, F. N., Fowler, J. R., Good, J. M., ... Wesley, G. L. (2004). The Hobby-Eberly Telescope: Performance upgrades, status, and plans. Proceedings of SPIE - The International Society for Optical Engineering, 5489(PART 1), 288-299. https://doi.org/10.1117/12.552500
Booth, John A. ; Adams, Mark T. ; Barker, Edwin S. ; Bash, Frank N. ; Fowler, James R. ; Good, John M. ; Hill, Gary J. ; Kelton, Phillip W. ; Lambert, David L. ; MacQueen, Phillip J. ; Palunas, Povilas ; Ramsey, Lawrence William ; Wesley, Gordon L. / The Hobby-Eberly Telescope : Performance upgrades, status, and plans. In: Proceedings of SPIE - The International Society for Optical Engineering. 2004 ; Vol. 5489, No. PART 1. pp. 288-299.
@article{33fc8601b43a4829baad8be880651447,
title = "The Hobby-Eberly Telescope: Performance upgrades, status, and plans",
abstract = "The Hobby-Eberly Telescope (HET) is a fixed-elevation, 9.2-m telescope with a spherical primary mirror and a tracker at prime focus to follow astronomical objects. The telescope was constructed for $13.9M over the period 1994-1997. A series of extensive engineering upgrades and corrective actions have been completed recently, resulting in significantly improved delivered image quality and increased operational efficiency. The telescope's Spherical Aberration Corrector (SAC) optics were recoated with a highly reflective and durable broadband coating at Lawrence Livermore National Laboratory. The software mount model that maintains optical alignment of the SAC with the 11-m primary mirror array was recalibrated and improved. The acquisition and guiding optics for both the High Resolution Spectrograph (HRS) and the Low Resolution Spectrograph (LRS) were reworked and improved, allowing for better focus and SAC alignment monitoring and control. Recoating of the primary mirror segment array was begun. Telescope images of 0.82 arcseconds have been recorded for sustained periods in preliminary testing following the engineering upgrade, an improvement of 50{\%} over previous best performance. Additional engineering upgrades are scheduled to consolidate these performance gains and to continue improving delivered image quality, throughput, and telescope operational efficiency. The HET is now capable of the science performance for which it was designed.",
author = "Booth, {John A.} and Adams, {Mark T.} and Barker, {Edwin S.} and Bash, {Frank N.} and Fowler, {James R.} and Good, {John M.} and Hill, {Gary J.} and Kelton, {Phillip W.} and Lambert, {David L.} and MacQueen, {Phillip J.} and Povilas Palunas and Ramsey, {Lawrence William} and Wesley, {Gordon L.}",
year = "2004",
month = "12",
day = "24",
doi = "10.1117/12.552500",
language = "English (US)",
volume = "5489",
pages = "288--299",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE",
number = "PART 1",

}

Booth, JA, Adams, MT, Barker, ES, Bash, FN, Fowler, JR, Good, JM, Hill, GJ, Kelton, PW, Lambert, DL, MacQueen, PJ, Palunas, P, Ramsey, LW & Wesley, GL 2004, 'The Hobby-Eberly Telescope: Performance upgrades, status, and plans', Proceedings of SPIE - The International Society for Optical Engineering, vol. 5489, no. PART 1, pp. 288-299. https://doi.org/10.1117/12.552500

The Hobby-Eberly Telescope : Performance upgrades, status, and plans. / Booth, John A.; Adams, Mark T.; Barker, Edwin S.; Bash, Frank N.; Fowler, James R.; Good, John M.; Hill, Gary J.; Kelton, Phillip W.; Lambert, David L.; MacQueen, Phillip J.; Palunas, Povilas; Ramsey, Lawrence William; Wesley, Gordon L.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5489, No. PART 1, 24.12.2004, p. 288-299.

Research output: Contribution to journalConference article

TY - JOUR

T1 - The Hobby-Eberly Telescope

T2 - Performance upgrades, status, and plans

AU - Booth, John A.

AU - Adams, Mark T.

AU - Barker, Edwin S.

AU - Bash, Frank N.

AU - Fowler, James R.

AU - Good, John M.

AU - Hill, Gary J.

AU - Kelton, Phillip W.

AU - Lambert, David L.

AU - MacQueen, Phillip J.

AU - Palunas, Povilas

AU - Ramsey, Lawrence William

AU - Wesley, Gordon L.

PY - 2004/12/24

Y1 - 2004/12/24

N2 - The Hobby-Eberly Telescope (HET) is a fixed-elevation, 9.2-m telescope with a spherical primary mirror and a tracker at prime focus to follow astronomical objects. The telescope was constructed for $13.9M over the period 1994-1997. A series of extensive engineering upgrades and corrective actions have been completed recently, resulting in significantly improved delivered image quality and increased operational efficiency. The telescope's Spherical Aberration Corrector (SAC) optics were recoated with a highly reflective and durable broadband coating at Lawrence Livermore National Laboratory. The software mount model that maintains optical alignment of the SAC with the 11-m primary mirror array was recalibrated and improved. The acquisition and guiding optics for both the High Resolution Spectrograph (HRS) and the Low Resolution Spectrograph (LRS) were reworked and improved, allowing for better focus and SAC alignment monitoring and control. Recoating of the primary mirror segment array was begun. Telescope images of 0.82 arcseconds have been recorded for sustained periods in preliminary testing following the engineering upgrade, an improvement of 50% over previous best performance. Additional engineering upgrades are scheduled to consolidate these performance gains and to continue improving delivered image quality, throughput, and telescope operational efficiency. The HET is now capable of the science performance for which it was designed.

AB - The Hobby-Eberly Telescope (HET) is a fixed-elevation, 9.2-m telescope with a spherical primary mirror and a tracker at prime focus to follow astronomical objects. The telescope was constructed for $13.9M over the period 1994-1997. A series of extensive engineering upgrades and corrective actions have been completed recently, resulting in significantly improved delivered image quality and increased operational efficiency. The telescope's Spherical Aberration Corrector (SAC) optics were recoated with a highly reflective and durable broadband coating at Lawrence Livermore National Laboratory. The software mount model that maintains optical alignment of the SAC with the 11-m primary mirror array was recalibrated and improved. The acquisition and guiding optics for both the High Resolution Spectrograph (HRS) and the Low Resolution Spectrograph (LRS) were reworked and improved, allowing for better focus and SAC alignment monitoring and control. Recoating of the primary mirror segment array was begun. Telescope images of 0.82 arcseconds have been recorded for sustained periods in preliminary testing following the engineering upgrade, an improvement of 50% over previous best performance. Additional engineering upgrades are scheduled to consolidate these performance gains and to continue improving delivered image quality, throughput, and telescope operational efficiency. The HET is now capable of the science performance for which it was designed.

UR - http://www.scopus.com/inward/record.url?scp=10444238018&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10444238018&partnerID=8YFLogxK

U2 - 10.1117/12.552500

DO - 10.1117/12.552500

M3 - Conference article

AN - SCOPUS:10444238018

VL - 5489

SP - 288

EP - 299

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

IS - PART 1

ER -