Spatial heterodyne spectroscopy for the exploration of diffuse interstellar emission lines at far-ultraviolet wavelengths

Harlander, John M.; Reynolds, R. J.; Roesler, F. L.

doi:10.1086/171756

Cited by 209 publications

(146 citation statements)

References 0 publications

Supporting

Mentioning

141

Contrasting

Unclassified

Order By: Relevance

“…The spikelike transmission spectrum passes less flux than the sinusoidal Michelson. In the Heterodyned Holographic Spectrograph (HHS; e.g., Douglas 1997;Frandsen, Douglas, & Butcher 1993) and Spatially Heterodyning Spectrometer (e.g., Harlander, Reynold, & Roesler 1992), a grating is incorporated inside the interferometer (as well as externally). This severely limits the bandwidth because different wavelengths combine in a range of angles at the interferometer output to produce widely changing spatial fringe spacings on the CCD detector (Fig.…”

Section: Comparison To Previous Hybridsmentioning

confidence: 99%

An Externally Dispersed Interferometer Prototype for Sensitive Radial Velocimetry: Theory and Demonstration on Sunlight

Erskine

2003

PUBL ASTRON SOC PAC

View full text Add to dashboard Cite

ABSTRACT.A theory of operation of a wideband interferometric Doppler spectroscopy technique, called externally dispersed interferometry (EDI), is presented. The first EDI prototype was tested on sunlight and detected the 12 m s Ϫ1 amplitude lunar signature in Earth's motion. The hybrid instrument is an undispersed Michelson interferometer having a fixed delay of about 1 cm, in series with an external spectrograph of about 20,000 resolution. The Michelson provides the Doppler shift discrimination, while the external spectrograph boosts net white-light fringe visibility by reducing cross talk from adjacent continuum channels. A moiré effect between the sinusoidal interferometer transmission and the input spectrum heterodynes high spectral details to broad moiré patterns, which carry the Doppler information in its phase. These broad patterns survive the blurring of the spectrograph, which can have several times lower resolution than grating-only spectrographs typically used now for the Doppler planet search. This enables the net instrument to be dramatically smaller in size (∼1 m) and cost. The EDI behavior is compared and contrasted to the conventional grating-only technique.

show abstract

Section: Comparison To Previous Hybridsmentioning

confidence: 99%

An Externally Dispersed Interferometer Prototype for Sensitive Radial Velocimetry: Theory and Demonstration on Sunlight

Erskine

2003

PUBL ASTRON SOC PAC

View full text Add to dashboard Cite

show abstract

“…SHS instruments measure all interferogram samples simultaneously in the spatial domain using a line or array detector. They heterodyne the spatial fringe frequency around the Littrow wavenumber, L , of the gratings, which allows the optimum use of the number of array detector elements [12]. Detailed descriptions of the SHS concept and data analysis can be found in publications by Harlander et al [12,13], Englert et al [14], and Englert and Harlander [15].…”

Section: Heritagementioning

confidence: 99%

“…They heterodyne the spatial fringe frequency around the Littrow wavenumber, L , of the gratings, which allows the optimum use of the number of array detector elements [12]. Detailed descriptions of the SHS concept and data analysis can be found in publications by Harlander et al [12,13], Englert et al [14], and Englert and Harlander [15]. SHS instruments can be field widened with fixed prisms and they can be built as very compact, robust, and lightweight packages suitable for space flight [13].…”

Section: Heritagementioning

confidence: 99%

Doppler asymmetric spatial heterodyne spectroscopy (DASH): concept and experimental demonstration

Babcock²,

2007

View full text Add to dashboard Cite

We describe the concept of Doppler asymmetric spatial heterodyne spectroscopy (DASH) and present a laboratory Doppler-shift measurement using an infrared laser line. DASH is a modification of spatial heterodyne spectroscopy optimized for high precision, high accuracy Doppler-shift measurements of atmospheric emission lines either from the ground or a satellite. We discuss DASH design considerations, field widening, thermal stability and tracking, noise propagation, advantages, and trade-offs. DASH interferometers do not require moving optical parts and can be built in rugged, compact packages, making them suitable for space flight and mobile ground instrumentation.

show abstract

“…The prisms rotate the image of the gratings so that they appear to be located in a common virtual plane which is oriented perpendicular to the optical axis for a wide range of incident angles. At the end, the acceptance angle of the SHS including field widening prisms is only limited by spherical aberration for systems with small Littrow angles and astigmatism for large Littrow angles (Harlander et al, 1992). Depending on the actual 20 design, the prisms increase the etendue or throughput of an SHS by 1-2 orders of magnitude.…”

mentioning

confidence: 99%

“…Depending on the actual 20 design, the prisms increase the etendue or throughput of an SHS by 1-2 orders of magnitude. The calculation of the prism apex angle is given by, e.g., Harlander et al (1992).…”

mentioning

confidence: 99%

A highly miniaturized satellite payload based on a spatial heterodyne spectrometer for atmospheric temperature measurements in the mesosphere and lower thermosphere

Kaufmann¹,

Olschewski²,

Mantel³

et al. 2018

Preprint

View full text Add to dashboard Cite

Abstract. A highly miniaturized limb sounder for the observation of the O 2 A-Band to derive temperatures in the mesosphere and lower thermosphere is presented. The instrument consists of a monolithic spatial heterodyne spectrometer (SHS), which is able to resolve the rotational structure of the R-branch of that band. The relative intensities of the emission lines follow a Boltzmann distribution and the ratio of the lines can be used to derive the kinetic temperature. The SHS operates at a Littrow wavelength of 761.8 nm and heterodynes a wavelength regime between 761.9 nm and 765.3 nm with a resolving power of

show abstract

Spatial heterodyne spectroscopy for the exploration of diffuse interstellar emission lines at far-ultraviolet wavelengths

Cited by 209 publications

References 0 publications

An Externally Dispersed Interferometer Prototype for Sensitive Radial Velocimetry: Theory and Demonstration on Sunlight

An Externally Dispersed Interferometer Prototype for Sensitive Radial Velocimetry: Theory and Demonstration on Sunlight

Doppler asymmetric spatial heterodyne spectroscopy (DASH): concept and experimental demonstration

A highly miniaturized satellite payload based on a spatial heterodyne spectrometer for atmospheric temperature measurements in the mesosphere and lower thermosphere

Contact Info

Product

Resources

About