Eight different fusion techniques for use with very high-resolution data

2005 ◽  
Author(s):  
Konstantinos G. Nikolakopoulos
Keyword(s):  
High Resolution ◽  
High Resolution Data ◽  
Very High ◽  
Resolution Data

Investigation of the Chromosphere–Corona Interface with the Upgraded Very High Angular Resolution Ultraviolet Telescope (VAULT2.0)

2016 ◽  
Vol 05 (01) ◽  
pp. 1640003 ◽  
Author(s):  
Angelos Vourlidas ◽  
Samuel Tun Beltran ◽  
Georgios Chintzoglou ◽  
Kevin Eisenhower ◽  
Clarence Korendyke ◽  
...  
Keyword(s):  
High Resolution ◽  
Angular Resolution ◽  
Solar Spectrum ◽  
High Angular Resolution ◽  
High Resolution Data ◽  
Lyman Alpha ◽  
And Performance ◽  
White Sands ◽  
Very High ◽  
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.

scholarly journals Route choice sets for very high-resolution data

2013 ◽  
Vol 9 (9) ◽  
pp. 825-845 ◽  
Author(s):  
Nadine Rieser-Schüssler ◽  
Michael Balmer ◽  
Kay W. Axhausen
Keyword(s):  
High Resolution ◽  
Route Choice ◽  
High Resolution Data ◽  
Choice Sets ◽  
Very High ◽  
Resolution Data

scholarly journals Direct phasing of nanocrystal diffraction

2013 ◽  
Vol 69 (6) ◽  
pp. 559-569 ◽  
Author(s):  
Veit Elser
Keyword(s):  
High Resolution ◽  
Free Electron ◽  
Free Electron Laser ◽  
Signal To Noise Ratio ◽  
Signal To Noise ◽  
High Resolution Data ◽  
X Ray ◽  
Particle Intensity ◽  
Very High ◽  
Resolution Data

Recent experiments at free-electron laser X-ray sources have been able to resolve the intensity distributions about Bragg peaks in nanocrystals of large biomolecules. Information derived from small shifts in the peak positions augment the Bragg samples of the particle intensity with samples of its gradients. Working on the assumption that the nanocrystal is entirely generated by lattice translations of a particle, an algorithm is developed that reconstructs the particle from intensities and intensity gradients. Unlike traditional direct phasing methods that require very high resolution data in order to exploit sparsity of the electron density, this method imposes no constraints on the contrast other than positivity and works well at low resolution. Successful reconstructions are demonstrated with simulatedP1 lysozyme nanocrystal data down to a signal-to-noise ratio of 2 in the intensity gradients.

Sign in / Sign up

Export Citation Format

Share Document