A Small Plane Grating Monochromator

Fastie, W. G.

doi:10.1364/josa.42.000641

Cited by 252 publications

(39 citation statements)

References 8 publications

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“…Ebert described two versions of his spectrograph: an "in-plane," in which the dispersion was in the plane of the principal ray of the spectrograph and the grating grooves perpendicular to this plane, and an "off-plane," with the converse arrangement; both used a spherical mirror for the collimator/camera. An improvement of this design was developed by Fastie (1952), where he used a parabolic mirror in order to avoid spherical aberrations; Fastie has also produced a history of this design type, a design that is underutilized in modern (ground-based) astronomical instrumentation (Fastie 1991).…”

Section: Initial Meanderingsmentioning

confidence: 99%

“…The initial MTT spectrograph design was based on an offplane Ebert-Fastie spectrograph (Fastie 1952), which was used as the design for the spectrograph at the Cananea 2.1 m telescope in Chihuahua, Mexico (Furenlid & Cardona 1988); Figure 1 is an optical layout of this design. The Fastie and Cananea spectrographs both use parabolic mirrors.…”

Section: Initial Meanderingsmentioning

confidence: 99%

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An Improved, “Newtonian” Version of the Ebert‐Fastie Spectrograph

Barry

Bagnuolo

Riddle

2002

PUBL ASTRON SOC PAC

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ABSTRACT.A new variation of the off-plane Ebert-Fastie spectrograph is described in which a Newtonian folding arrangement is mounted between the collimator/camera mirror and the grating. This arrangement removes the sagittal and tangential astigmatism and coma of the classical Ebert-Fastie, allowing the design to be extended from a monochromator to CCD spectroscopy. The Newtonian modification (which includes a spherical collimator/ camera) results in a point-spread function that is nearly isotropic across the field of view, well suited to spectroscopic studies of stellar objects. This spectrograph is the dedicated science instrument of the Georgia State University 1 m Multiple Telescope Telescope.

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Section: Initial Meanderingsmentioning

confidence: 99%

Section: Initial Meanderingsmentioning

confidence: 99%

An Improved, “Newtonian” Version of the Ebert‐Fastie Spectrograph

Barry

Bagnuolo

Riddle

2002

PUBL ASTRON SOC PAC

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“…In the vertical cross section [9,10] . A further improvement might be accomplished by fitting the slits to the true spatial slit CUTve, as derived above.…”

Section: 2 Slit Curve-in-plane and Off-plane Monochromatorsmentioning

confidence: 99%

Theory of mirror spectographs. III. Focal surfaces and slit curvature of Ebert and Ebert-Fastie spectographs

Mielenz¹

1964

J. RES. NATL. BUR. STAN. SECT. C. ENG. INSTR.

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A sp ati al t h eo r y of the focal surfaces an d slit cur ves of EbcrL an e! EbcI'L-Fast ie mon ochrom atol's and sp cctrograph s is pl'csc n ted.In a scco nd-order a pprox im atio n, i t y i el d s close d expr ess ion s f or U1C' focal surface, from w hi ch a " sto p-shift " t heo r y is developed to st u dy t he influence o f Lh c posi t io n of t he grat i ng i n t he spectr og r aph upon th e curvat ure of t he spect r um. 1'1 1(' co nd it ion for an C'xtended fl at spectrum is deri vee! , and t h e Ebe r L-l cast ie sy stl' m is shown La b e t he p ref eriI,bl e on e fo r spectr ogr ap h design.T lw cllrvatu r e of l ong m onoc hrom ato r sli t s is al so de ri ved as a cl osed, seco nd-ord er C'xp J'('ss ion. Th e Eber sys tem, on ly , ca n be equ i pped with lo ng sl it s, so that it , in t urn , co n i i Lu Les Lhe super ior monoc hromato r m oun t in g.A fourLh-ol'e! er approxi maLion is also incl uded for sLill m o re acc u mLe comp u tations.

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“…The goal in the design of such a spectrometer is twofold: first, to maximize spectral resolution under dimensional constraints; second, to make a design that is suitable for component fabrication in a simple MEMS batch process, while allowing relatively large tolerances in component alignment during system assembly. The use of a single spherical mirror defines the optical design as a modified Fastie-Ebert mounting [11] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

High-resolution microspectrometer with an aberration-correcting planar grating

Grabarnik

Emadi

et al. 2008

Appl. Opt.

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A concept for a highly miniaturized spectrometer featuring a two-component design is presented. The first component is a planar chip that integrates an input slit and aberration-correcting diffraction grating with an image sensor and is fabricated using microelectromechanical systems (MEMS) technologies. Due to the fabrication in a simple MEMS batch process the essential elements of the spectrometer are automatically aligned, and a low fabrication cost per device can be achieved. The second component is a spherical mirror, which is the only external part. The optimized grating structure compensates for aberrations within the spectrometer operating range, resulting in a diffraction-limited performance of the spectrometer optics. The prototype of the device has been fabricated and characterized. It takes a volume of 0:5 cm 3 and provides a FWHM spectral resolution of 0:7 nm over a 350 nm bandwidth from 420 nm to 770 nm combined with an etendue of 7:4 × 10 −5 mm 2 sr.

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A Small Plane Grating Monochromator

Cited by 252 publications

References 8 publications

An Improved, “Newtonian” Version of the Ebert‐Fastie Spectrograph

An Improved, “Newtonian” Version of the Ebert‐Fastie Spectrograph

Theory of mirror spectographs. III. Focal surfaces and slit curvature of Ebert and Ebert-Fastie spectographs

High-resolution microspectrometer with an aberration-correcting planar grating

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