WIYN bench upgrade

A revitalized spectrograph

M. Bershady, S. Bardenb, Pierre Alexandre Blanche, D. Blancod, C. Corsond, S. Crawford, J. Glaspey, S. Habraken, G. Jacoby, J. Keyes, P. Knezek, P. Lemaire, M. Liang, E. McDougall, G. Poczulp, D. Sawyer, K. Westfall, D. Willmarth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

We describe the redesign and upgrade of the versatile fiber-fed Bench Spectrograph on the WIYN 3.5m telescope. The spectrograph is fed by either the Hydra multi-object positioner or integral-field units (IFUs) at two other ports, and can be configured with an adjustable camera-collimator angle to use low-order and echelle gratings. The upgrade, including a new collimator, charge-coupled device (CCD) and modern controller, and volume-phase holographic gratings (VPHG), has high performance-to-cost ratio by combining new technology with a system reconfiguration that optimizes throughput while utilizing as much of the existing instrument as possible. A faster, all-refractive collimator enhances throughput by 60%, nearly eliminates the slit-function due to vignetting, and improves image quality to maintain instrumental resolution. Two VPH gratings deliver twice the diffraction efficiency of existing surface-relief gratings: A 740 l/mm grating (float-glass and post-polished) used in 1st and 2nd-order, and a large 3300 l/mm grating (spectral resolution comparable to the R2 echelle). The combination of collimator, high-quantum efficiency (QE) CCD, and VPH gratings yields throughput gain-factors of up to 3.5.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7014
DOIs
StatePublished - 2008
Externally publishedYes
EventGround-based and Airborne Instrumentation for Astronomy II - Marseille, France
Duration: Jun 23 2008Jun 28 2008

Other

OtherGround-based and Airborne Instrumentation for Astronomy II
CountryFrance
CityMarseille
Period6/23/086/28/08

Fingerprint

Spectrographs
Spectrograph
Gratings
seats
spectrographs
Diffraction gratings
Throughput
Antenna feeders
gratings
Charge coupled devices
collimators
Echelle
Holographic gratings
Charge-coupled Device
Diffraction efficiency
Spectral resolution
Quantum efficiency
Telescopes
Image quality
Cameras

Keywords

  • CCD performance
  • Fiber-fed spectrograph design
  • Volume phase holographic grating

ASJC Scopus subject areas

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

Cite this

Bershady, M., Bardenb, S., Blanche, P. A., Blancod, D., Corsond, C., Crawford, S., ... Willmarth, D. (2008). WIYN bench upgrade: A revitalized spectrograph. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7014). [70140H] https://doi.org/10.1117/12.789112

WIYN bench upgrade : A revitalized spectrograph. / Bershady, M.; Bardenb, S.; Blanche, Pierre Alexandre; Blancod, D.; Corsond, C.; Crawford, S.; Glaspey, J.; Habraken, S.; Jacoby, G.; Keyes, J.; Knezek, P.; Lemaire, P.; Liang, M.; McDougall, E.; Poczulp, G.; Sawyer, D.; Westfall, K.; Willmarth, D.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7014 2008. 70140H.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bershady, M, Bardenb, S, Blanche, PA, Blancod, D, Corsond, C, Crawford, S, Glaspey, J, Habraken, S, Jacoby, G, Keyes, J, Knezek, P, Lemaire, P, Liang, M, McDougall, E, Poczulp, G, Sawyer, D, Westfall, K & Willmarth, D 2008, WIYN bench upgrade: A revitalized spectrograph. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7014, 70140H, Ground-based and Airborne Instrumentation for Astronomy II, Marseille, France, 6/23/08. https://doi.org/10.1117/12.789112
Bershady M, Bardenb S, Blanche PA, Blancod D, Corsond C, Crawford S et al. WIYN bench upgrade: A revitalized spectrograph. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7014. 2008. 70140H https://doi.org/10.1117/12.789112
Bershady, M. ; Bardenb, S. ; Blanche, Pierre Alexandre ; Blancod, D. ; Corsond, C. ; Crawford, S. ; Glaspey, J. ; Habraken, S. ; Jacoby, G. ; Keyes, J. ; Knezek, P. ; Lemaire, P. ; Liang, M. ; McDougall, E. ; Poczulp, G. ; Sawyer, D. ; Westfall, K. ; Willmarth, D. / WIYN bench upgrade : A revitalized spectrograph. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7014 2008.
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