Projections of Brodmann Area 6 to the Pyramidal Tract in Humans: Quantifications Using High Angular Resolution Data

Very high angular resolution ultraviolet telescope (VAULT2.0) is a Lyman-alpha (Ly[Formula: see text]; 1216[Formula: see text]Å) spectroheliograph designed to observe the upper chromospheric region of the solar atmosphere with high spatial ([Formula: see text]) and temporal (8[Formula: see text]s) resolution. Besides being the brightest line in the solar spectrum, Ly[Formula: see text] emission arises at the temperature interface between coronal and chromospheric plasmas and may, hence, hold important clues about the transfer of mass and energy to the solar corona. VAULT2.0 is an upgrade of the previously flown VAULT rocket and was launched successfully on September 30, 2014 from White Sands Missile Range (WSMR). The target was AR12172 midway toward the southwestern limb. We obtained 33 images at 8[Formula: see text]s cadence at arc second resolution due to hardware problems. The science campaign was a resounding success, with all space and ground-based instruments obtaining high-resolution data at the same location within the AR. We discuss the science rationale, instrument upgrades, and performance during the first flight and present some preliminary science results.

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Michelson-Spectro-Interferometry (MSI) of Be stars envelopes with the GI2T Interferometer

International Astronomical Union Colloquium ◽

10.1017/s0252921100023320 ◽

1995 ◽

Vol 149 ◽

pp. 365-368

Author(s):

Ph. Stee ◽

D. Bonneau ◽

P. Lawson ◽

F. Morand ◽

D. Mourard ◽

...

Keyword(s):

Angular Resolution ◽

Michelson Interferometer ◽

Numerical Code ◽

High Angular Resolution ◽

Be Stars ◽

Wind Model ◽

Long Baseline ◽

Balmer Lines ◽

Extended Sources ◽

Resolution Data

AbstractThe GI2T is an optical long-baseline Michelson interferometer which analyses dispersed stellar fringes in the multi-speckle mode with a spectral resolution of one Angstrom while the spatial resolution is about one milliarcsecond. This makes the GI2T a powerful instrument able to perform MSI of extended sources like Be stars or shell stars. In order to interpret these data we have developed a latitude dependent radiative wind model for Be stars. This numerical code enables us to compare directly computed 2D maps in some Balmer lines (Hα and Hβ) with high angular resolution data of some Be stars.

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Comparison between a Radiative Wind Model for be Stars and High Angular Resolution Data from the GI2T Interferometer

Circumstellar Matter 1994 ◽

10.1007/978-94-011-0147-9_144 ◽

1995 ◽

pp. 561-562

Author(s):

Ph. Stee

Keyword(s):

Angular Resolution ◽

High Angular Resolution ◽

Be Stars ◽

Wind Model ◽

Resolution Data

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Comparison between a radiative wind model for be stars and high angular resolution data from the GI2T interferometer

Astrophysics and Space Science ◽

10.1007/bf00667955 ◽

1995 ◽

Vol 224 (1-2) ◽

pp. 561-562 ◽

Cited By ~ 3

Author(s):

Ph. Stee

Keyword(s):

Angular Resolution ◽

High Angular Resolution ◽

Be Stars ◽

Wind Model ◽

Resolution Data

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A lower limit to the accretion disc radius in the low-luminosity AGNNGC 1052 derived from high-angular resolution data

Monthly Notices of the Royal Astronomical Society Letters ◽

10.1093/mnrasl/sly079 ◽

2018 ◽

Vol 478 (1) ◽

pp. L122-L126 ◽

Cited By ~ 1

Author(s):

Lennart Reb ◽

Juan A Fernández-Ontiveros ◽

M Almudena Prieto ◽

Klaus Dolag

Keyword(s):

Lower Limit ◽

Angular Resolution ◽

Accretion Disc ◽

High Angular Resolution ◽

Resolution Data

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Small-Angle Electron Scattering (SAES) of Polymers

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100117467 ◽

1985 ◽

Vol 43 ◽

pp. 78-79

Author(s):

Ralph Oralor ◽

Pamela Lloyd ◽

Satish Kumar ◽

W. W. Adams

Keyword(s):

Electron Scattering ◽

Small Angle ◽

Angular Resolution ◽

Structural Features ◽

Objective Lens ◽

High Angular Resolution ◽

Push Button ◽

First Case ◽

Diffraction Mode ◽

Very High

Small angle electron scattering (SAES) has been used to study structural features of up to several thousand angstroms in polymers, as well as in metals. SAES may be done either in (a) long camera mode by switching off the objective lens current or in (b) selected area diffraction mode. In the first case very high camera lengths (up to 7Ø meters on JEOL 1Ø ØCX) and high angular resolution can be obtained, while in the second case smaller camera lengths (approximately up to 3.6 meters on JEOL 1Ø ØCX) and lower angular resolution is obtainable. We conducted our SAES studies on JEOL 1ØØCX which can be switched to either mode with a push button as a standard feature.

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Large-angle convergent-beam electron-diffraction study of coherent precipitates and decorated dislocations

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100167470 ◽

1996 ◽

Vol 54 ◽

pp. 1002-1004

Author(s):

J.M.K. Wiezorek ◽

H.L. Fraser

Keyword(s):

Electron Diffraction ◽

Angular Resolution ◽

Large Angle ◽

Electron Diffraction Study ◽

Convergent Beam Electron Diffraction ◽

Crystal Defects ◽

High Angular Resolution ◽

Beam Electron ◽

Diffraction Plane ◽

Convergent Beam

Conventional methods of convergent beam electron diffraction (CBED) use a fully converged probe focused on the specimen in the object plane resulting in the formation of a CBED pattern in the diffraction plane. Large angle CBED (LACBED) uses a converged but defocused probe resulting in the formation of ‘shadow images’ of the illuminated sample area in the diffraction plane. Hence, low-spatial resolution image information and high-angular resolution diffraction information are superimposed in LACBED patterns which enables the simultaneous observation of crystal defects and their effect on the diffraction pattern. In recent years LACBED has been used successfully for the investigation of a variety of crystal defects, such as stacking faults, interfaces and dislocations. In this paper the contrast from coherent precipitates and decorated dislocations in LACBED patterns has been investigated. Computer simulated LACBED contrast from decorated dislocations and coherent precipitates is compared with experimental observations.

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