Optical spectroscopy with a near single-mode fiber feed and adaptive optics

Jian Ge, J Roger P Angel, Chris Shelton

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

20 Citations (Scopus)

Abstract

We report on first astronomical results with a cross-dispersed optical échelle spectrograph fed by a near single-mode fiber. We also present on a novel design of a new adaptive optics (AO) optimized fiber-fed cross-dispersed échelle spectrograph. The spectrograph is designed to match with AO corrected images in the optical bands provided by such as the Mt. Wilson 100 inch, Starfire Optical Range 3.5 m AO telescopes. Ultimately, it will be installed at the 6.5 m MMT, when this has high resolution AO correcting the optical spectrum. The spectrograph, fed by a 10 micron fused silica fiber, is unique in that the entire spectrum from 0.4 micron to 1.0 micron will be almost completely covered at resolution 200,000 in one exposure. The detector is a 2k×4k AR coated back illuminated CCD with 15 micron pixel size. The close order spacing allowed by the sharp AO image makes the full cover possible. A 250×125 mm2 Milton Roy R2 echelle grating with 23.2 grooves mm-1 and a blaze angle of 63.5 deg provides main dispersion. A double pass BK7 prism with 21 deg wedge angle provides cross dispersion, covering the spectrum from order 193 to 77. The spectrograph is used in the quasi-Littrow configuration with an off-axis Maksutov collimator/camera. The fiber feeds the AO corrected beams from the telescope Cassegrain focus to the spectrograph, which is set up on an optical bench. The spectrograph will be used mainly to study line profiles of solar type stars, to explore problems of indirect detection of planets and also study interstellar medium, circumstellar medium and metal abundance and isotopic ratios of extremely metal-poor stars.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages253-263
Number of pages11
Volume3355
DOIs
StatePublished - 1998
EventOptical Astronomical Instrumentation - Kona, HI, United States
Duration: Mar 26 1998Mar 26 1998

Other

OtherOptical Astronomical Instrumentation
CountryUnited States
CityKona, HI
Period3/26/983/26/98

Fingerprint

Spectrographs
Adaptive optics
Single-mode Fiber
Spectrograph
Adaptive Optics
Single mode fibers
adaptive optics
spectrographs
Spectroscopy
optics
fibers
spectroscopy
Fiber
Telescopes
Stars
Telescope
Fibers
Star
Metals
echelle gratings

Keywords

  • Adaptive optics
  • Encircled energy
  • Fiber-feed
  • Spectroscopy

ASJC Scopus subject areas

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

Cite this

Ge, J., Angel, J. R. P., & Shelton, C. (1998). Optical spectroscopy with a near single-mode fiber feed and adaptive optics. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3355, pp. 253-263) https://doi.org/10.1117/12.316767

Optical spectroscopy with a near single-mode fiber feed and adaptive optics. / Ge, Jian; Angel, J Roger P; Shelton, Chris.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3355 1998. p. 253-263.

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

Ge, J, Angel, JRP & Shelton, C 1998, Optical spectroscopy with a near single-mode fiber feed and adaptive optics. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3355, pp. 253-263, Optical Astronomical Instrumentation, Kona, HI, United States, 3/26/98. https://doi.org/10.1117/12.316767
Ge J, Angel JRP, Shelton C. Optical spectroscopy with a near single-mode fiber feed and adaptive optics. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3355. 1998. p. 253-263 https://doi.org/10.1117/12.316767
Ge, Jian ; Angel, J Roger P ; Shelton, Chris. / Optical spectroscopy with a near single-mode fiber feed and adaptive optics. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3355 1998. pp. 253-263
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