Coronal Heating by MHD Waves: Results from the SECIS Instrument during the 1999 Eclipse

We report on results from the Solar Eclipse Coronal Imaging System (SECIS), an instrument using fast CCD cameras designed to search for short-period modulations in visible-light emission from the corona during an eclipse or with a coronagraph. The instrument was successfully used during the total eclipse of 1999 August 11 from a site in Bulgaria. This paper summarizes both the instrument and preliminary results.

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Mapping prominence plasma parameters from eclipse observations

Proceedings of the International Astronomical Union ◽

10.1017/s1743921313011368 ◽

2013 ◽

Vol 8 (S300) ◽

pp. 420-421

Author(s):

Sonja Jejčič ◽

Petr Heinzel ◽

Maciej Zapiór ◽

Miloslav Druckmüller ◽

Stanislav Gunár ◽

...

Keyword(s):

Visible Light ◽

Electron Density ◽

Solar Eclipse ◽

Light Emission ◽

Total Solar Eclipse ◽

Quiescent Prominence ◽

Plasma Parameters ◽

Eclipse Observations ◽

First Time ◽

Visible Light Emission

AbstractUsing the eclipse observations, we construct the maps of quiescent prominence temperatures, electron densities, pressures and geometrical thicknesses. For this we use the RGB signal of prominence visible-light emission detected during the total solar eclipse on August 1, 2008 in Mongolia, and quasi-simultaneous Hα spectra taken at Ondřejov observatory. The method of disentangling the electron density and effective geometrical thickness was described by Jejčič & Heinzel (2009) and is used here for the first time to analyse the spatial variations of various prominence parameters.

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Preliminary results of evaluation of time sequenced images of visible light emission from a compact toroid plasma

[1991] IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Conference Proceedings ◽

10.1109/pacrim.1991.160811 ◽

2002 ◽

Author(s):

S.E. Englert ◽

S.K. Coffey

Keyword(s):

Visible Light ◽

Light Emission ◽

Preliminary Results ◽

Compact Toroid ◽

Visible Light Emission

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Scanning luminescence x-ray microscopy: Progress toward selective staining using microspheres

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100168104 ◽

1994 ◽

Vol 52 ◽

pp. 74-75

Author(s):

C. Jacobsen ◽

J. Fu ◽

S. Mayer ◽

Y. Wang ◽

S. Williams

Keyword(s):

Visible Light ◽

Active Sites ◽

Light Emission ◽

Chinese Hamster ◽

Polystyrene Spheres ◽

Good Resistance ◽

X Ray ◽

Selective Staining ◽

Visible Light Emission ◽

Specific Labelling

In scanning luminescence x-ray microscopy (SLXM), a high resolution x-ray probe is used to excite visible light emission (see Figs. 1 and 2). The technique has been developed with a goal of localizing dye-tagged biochemically active sites and structures at 50 nm resolution in thick, hydrated biological specimens. Following our initial efforts, Moronne et al. have begun to develop probes based on biotinylated terbium; we report here our progress towards using microspheres for tagging.Our initial experiments with microspheres were based on commercially-available carboxyl latex spheres which emitted ~ 5 visible light photons per x-ray absorbed, and which showed good resistance to bleaching under x-ray irradiation. Other work (such as that by Guo et al.) has shown that such spheres can be used for a variety of specific labelling applications. Our first efforts have been aimed at labelling ƒ actin in Chinese hamster ovarian (CHO) cells. By using a detergent/fixative protocol to load spheres into cells with permeabilized membranes and preserved morphology, we have succeeded in using commercial dye-loaded, spreptavidin-coated 0.03μm polystyrene spheres linked to biotin phalloidon to label f actin (see Fig. 3).

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