The first high resolution silicon immersion grating spectrograph

Jian Ge, Daniel McDavitt, Bo Zhao, Suvrath Mahadevan, Curtis DeWitt, Sara Seager

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

3 Citations (Scopus)

Abstract

We report the development of the first high resolution cross-dispersed silicon immersion grating spectrometer. This instrument is called the Florida IR Silicon immersion grating specTrometer (FIRST). FIRST can produce R = 50,000 under a 0.6 arcsec seeing and simultaneously cover 1.3-1.8 μm with a 1k×1k HgCdTe array at the Apache Point Observatory 3.5 meter telescope. FIRST has a 50 mm diameter collimated beam and the overall instrument is within a volume of 0.8×0.5×0.5 m 3. The high dispersion, large wavelength coverage and small instrument volume become possible due to the use of a silicon immersion grating (54.7 deg blaze angle and 50 mm diameter entrance pupil) with extremely high dispersion power (3.4 times dispersion power of a conventional echelle) and coarse grooves (16.1 1/mm, coarser than the commercially available echelles). The silicon immersion grating used in a lab bench mounted Czeney-Turner spectrograph with an only 25 mm diameter collimated beam and a 100 um core fiber has produced R = 55,000 cross-dispersed solar spectra. This instrument is designed to precisely measure radial velocities of low mass stars, M dwarfs for detecting 5-10 Earth mass planets. The estimated Doppler precision is ∼ 3 m/s for a J = 9 M5V dwarf in 15 min at the APO 3.5m telescope.

Original languageEnglish (US)
Title of host publicationGround-based and Airborne Instrumentation for Astronomy
Volume6269 I
DOIs
StatePublished - Oct 9 2006
EventGround-based and Airborne Instrumentation for Astronomy - Orlando, FL, United States
Duration: May 25 2006May 29 2006

Other

OtherGround-based and Airborne Instrumentation for Astronomy
CountryUnited States
CityOrlando, FL
Period5/25/065/29/06

Fingerprint

Spectrographs
Spectrograph
Silicon
Immersion
Gratings
submerging
spectrographs
High Resolution
gratings
high resolution
Diffraction gratings
silicon
Spectrometer
Telescopes
Telescope
Spectrometers
telescopes
spectrometers
Echelle
Radial velocity

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

Ge, J., McDavitt, D., Zhao, B., Mahadevan, S., DeWitt, C., & Seager, S. (2006). The first high resolution silicon immersion grating spectrograph. In Ground-based and Airborne Instrumentation for Astronomy (Vol. 6269 I). [62691D] https://doi.org/10.1117/12.670860
Ge, Jian ; McDavitt, Daniel ; Zhao, Bo ; Mahadevan, Suvrath ; DeWitt, Curtis ; Seager, Sara. / The first high resolution silicon immersion grating spectrograph. Ground-based and Airborne Instrumentation for Astronomy. Vol. 6269 I 2006.
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Ge, J, McDavitt, D, Zhao, B, Mahadevan, S, DeWitt, C & Seager, S 2006, The first high resolution silicon immersion grating spectrograph. in Ground-based and Airborne Instrumentation for Astronomy. vol. 6269 I, 62691D, Ground-based and Airborne Instrumentation for Astronomy, Orlando, FL, United States, 5/25/06. https://doi.org/10.1117/12.670860

The first high resolution silicon immersion grating spectrograph. / Ge, Jian; McDavitt, Daniel; Zhao, Bo; Mahadevan, Suvrath; DeWitt, Curtis; Seager, Sara.

Ground-based and Airborne Instrumentation for Astronomy. Vol. 6269 I 2006. 62691D.

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

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N2 - We report the development of the first high resolution cross-dispersed silicon immersion grating spectrometer. This instrument is called the Florida IR Silicon immersion grating specTrometer (FIRST). FIRST can produce R = 50,000 under a 0.6 arcsec seeing and simultaneously cover 1.3-1.8 μm with a 1k×1k HgCdTe array at the Apache Point Observatory 3.5 meter telescope. FIRST has a 50 mm diameter collimated beam and the overall instrument is within a volume of 0.8×0.5×0.5 m 3. The high dispersion, large wavelength coverage and small instrument volume become possible due to the use of a silicon immersion grating (54.7 deg blaze angle and 50 mm diameter entrance pupil) with extremely high dispersion power (3.4 times dispersion power of a conventional echelle) and coarse grooves (16.1 1/mm, coarser than the commercially available echelles). The silicon immersion grating used in a lab bench mounted Czeney-Turner spectrograph with an only 25 mm diameter collimated beam and a 100 um core fiber has produced R = 55,000 cross-dispersed solar spectra. This instrument is designed to precisely measure radial velocities of low mass stars, M dwarfs for detecting 5-10 Earth mass planets. The estimated Doppler precision is ∼ 3 m/s for a J = 9 M5V dwarf in 15 min at the APO 3.5m telescope.

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Ge J, McDavitt D, Zhao B, Mahadevan S, DeWitt C, Seager S. The first high resolution silicon immersion grating spectrograph. In Ground-based and Airborne Instrumentation for Astronomy. Vol. 6269 I. 2006. 62691D https://doi.org/10.1117/12.670860