The Hobby-Eberly telescope completion project

John A. Booth, Marsha J. Wolf, James R. Fowler, Mark T. Adams, John M. Good, Phillip W. Kelton, Edwin S. Barker, Povilas Palunas, Frank N. Bash, Lawrence William Ramsey, Gary J. Hill, Phillip J. MacQueen, Mark E. Cornell, Edward L. Robinson

Research output: Contribution to journalConference article

28 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 number of telescope performance deficiencies were identified and corrected following construction. Remaining problems included: 1) Dome seeing, 2) inadequate initial mirror segment alignment accuracy, and 3) mirror segment misalignment with time. The HET Completion Project was created in May 2001 to attack these problems and to identify and solve the next tier of problems. To address dome seeing, large louvers were installed and in operation by May 2002. Efforts are also underway to eliminate or suppress heat sources within the dome environment. To address segment alignment accuracy, a prototype Shack-Hartmann device, the Mirror Alignment Recovery System (MARS), was built and is in routine use at HET. The Segment Alignment Maintenance System (SAMS) is in early operation and has markedly improved telescope performance. Two Differential Image Motion Monitor (DIMM) telescopes were brought into regular operation in July 2001 to quantify atmospheric seeing at HET. As these improvements have been implemented, telescope image quality has improved significantly. Plans are in place to address additional performance issues.

Original languageEnglish (US)
Pages (from-to)919-933
Number of pages15
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4837
Issue number2
DOIs
StatePublished - Jan 1 2002
EventLarge Ground-based Telescopes - Waikoloa, HI, United States
Duration: Aug 22 2002Aug 26 2002

Fingerprint

Hobby-Eberly Telescope
Telescopes
Telescope
Completion
telescopes
Dome
Mirror
Alignment
Domes
Mirrors
domes
alignment
mirrors
Misalignment
Heat Source
Image Quality
louvers
Monitor
Maintenance
Quantify

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., Wolf, M. J., Fowler, J. R., Adams, M. T., Good, J. M., Kelton, P. W., ... Robinson, E. L. (2002). The Hobby-Eberly telescope completion project. Proceedings of SPIE - The International Society for Optical Engineering, 4837(2), 919-933. https://doi.org/10.1117/12.458223
Booth, John A. ; Wolf, Marsha J. ; Fowler, James R. ; Adams, Mark T. ; Good, John M. ; Kelton, Phillip W. ; Barker, Edwin S. ; Palunas, Povilas ; Bash, Frank N. ; Ramsey, Lawrence William ; Hill, Gary J. ; MacQueen, Phillip J. ; Cornell, Mark E. ; Robinson, Edward L. / The Hobby-Eberly telescope completion project. In: Proceedings of SPIE - The International Society for Optical Engineering. 2002 ; Vol. 4837, No. 2. pp. 919-933.
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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 number of telescope performance deficiencies were identified and corrected following construction. Remaining problems included: 1) Dome seeing, 2) inadequate initial mirror segment alignment accuracy, and 3) mirror segment misalignment with time. The HET Completion Project was created in May 2001 to attack these problems and to identify and solve the next tier of problems. To address dome seeing, large louvers were installed and in operation by May 2002. Efforts are also underway to eliminate or suppress heat sources within the dome environment. To address segment alignment accuracy, a prototype Shack-Hartmann device, the Mirror Alignment Recovery System (MARS), was built and is in routine use at HET. The Segment Alignment Maintenance System (SAMS) is in early operation and has markedly improved telescope performance. Two Differential Image Motion Monitor (DIMM) telescopes were brought into regular operation in July 2001 to quantify atmospheric seeing at HET. As these improvements have been implemented, telescope image quality has improved significantly. Plans are in place to address additional performance issues.",
author = "Booth, {John A.} and Wolf, {Marsha J.} and Fowler, {James R.} and Adams, {Mark T.} and Good, {John M.} and Kelton, {Phillip W.} and Barker, {Edwin S.} and Povilas Palunas and Bash, {Frank N.} and Ramsey, {Lawrence William} and Hill, {Gary J.} and MacQueen, {Phillip J.} and Cornell, {Mark E.} and Robinson, {Edward L.}",
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Booth, JA, Wolf, MJ, Fowler, JR, Adams, MT, Good, JM, Kelton, PW, Barker, ES, Palunas, P, Bash, FN, Ramsey, LW, Hill, GJ, MacQueen, PJ, Cornell, ME & Robinson, EL 2002, 'The Hobby-Eberly telescope completion project', Proceedings of SPIE - The International Society for Optical Engineering, vol. 4837, no. 2, pp. 919-933. https://doi.org/10.1117/12.458223

The Hobby-Eberly telescope completion project. / Booth, John A.; Wolf, Marsha J.; Fowler, James R.; Adams, Mark T.; Good, John M.; Kelton, Phillip W.; Barker, Edwin S.; Palunas, Povilas; Bash, Frank N.; Ramsey, Lawrence William; Hill, Gary J.; MacQueen, Phillip J.; Cornell, Mark E.; Robinson, Edward L.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4837, No. 2, 01.01.2002, p. 919-933.

Research output: Contribution to journalConference article

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T1 - The Hobby-Eberly telescope completion project

AU - Booth, John A.

AU - Wolf, Marsha J.

AU - Fowler, James R.

AU - Adams, Mark T.

AU - Good, John M.

AU - Kelton, Phillip W.

AU - Barker, Edwin S.

AU - Palunas, Povilas

AU - Bash, Frank N.

AU - Ramsey, Lawrence William

AU - Hill, Gary J.

AU - MacQueen, Phillip J.

AU - Cornell, Mark E.

AU - Robinson, Edward L.

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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 number of telescope performance deficiencies were identified and corrected following construction. Remaining problems included: 1) Dome seeing, 2) inadequate initial mirror segment alignment accuracy, and 3) mirror segment misalignment with time. The HET Completion Project was created in May 2001 to attack these problems and to identify and solve the next tier of problems. To address dome seeing, large louvers were installed and in operation by May 2002. Efforts are also underway to eliminate or suppress heat sources within the dome environment. To address segment alignment accuracy, a prototype Shack-Hartmann device, the Mirror Alignment Recovery System (MARS), was built and is in routine use at HET. The Segment Alignment Maintenance System (SAMS) is in early operation and has markedly improved telescope performance. Two Differential Image Motion Monitor (DIMM) telescopes were brought into regular operation in July 2001 to quantify atmospheric seeing at HET. As these improvements have been implemented, telescope image quality has improved significantly. Plans are in place to address additional performance issues.

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