HIRES: a high-resolution stigmatic extreme ultraviolet spectroheliometer for studies of the fine-scale structure of the solar chromosphere, transition region, and corona

1991 ◽  
Vol 30 (8) ◽  
pp. 1142
Author(s):  
J. Gethyn Timothy
Keyword(s):  
High Resolution ◽  
Transition Region ◽  
Extreme Ultraviolet ◽  
Scale Structure ◽  
Solar Chromosphere ◽  
Fine Scale

High-resolution stigmatic EUV spectroheliometer for studies of the fine scale structure of the solar chromosphere, transition region, and corona

1991 ◽  
Author(s):  
J. Gethyn Timothy ◽  
Thomas E. Berger ◽  
Jeffrey S. Morgan ◽  
Arthur B. C. Walker II ◽  
Jagadish C. Bhattacharyya ◽  
...  
Keyword(s):  
High Resolution ◽  
Transition Region ◽  
Scale Structure ◽  
Solar Chromosphere ◽  
Fine Scale

scholarly journals Experiment to Determine the Temperature Structure in the Solar Chromosphere and Corona

1972 ◽  
Vol 14 ◽  
pp. 668-669
Author(s):  
C. R. Negus
Keyword(s):  
Transition Region ◽  
Extreme Ultraviolet ◽  
Normal Incidence ◽  
Research Unit ◽  
Emission Lines ◽  
Solar Chromosphere ◽  
Temperature Structure ◽  
Ultraviolet Emission ◽  
Ionization Temperature ◽  
Intensity Ratios

An experiment is in course of preparation at the Astrophysics Research Unit at Culham for flight on a Sun-pointing rocket. It is designed to determine the ionization temperature and electron density as a function of height in the temperature range of about 8 × 104 K to 3 × 106 K by measuring limb to disk intensity ratios of extreme ultraviolet emission lines in the 170 to 850 Å region. The work is an extension of current experiments in which normal-incidence spectrographs are used to determine the structure lower in the chromosphere-corona transition region.

High-resolution Imaging of the Solar Chromosphere/Corona Transition Region

1999 ◽  
Vol 519 (1) ◽  
pp. L97-L100 ◽  
Author(s):  
T. E. Berger ◽  
B. De Pontieu ◽  
C. J. Schrijver ◽  
A. M. Title
Keyword(s):  
High Resolution ◽  
Transition Region ◽  
Solar Chromosphere ◽  
High Resolution Imaging ◽  
Resolution Imaging

Mapping a bloom of the coccolithophorid Emiliania huxleyi from airborne thematic mapper (ATM) data

1996 ◽  
Vol 76 (4) ◽  
pp. 839-849 ◽  
Author(s):  
Carlos Garcia-Soto ◽  
Bablu Sinha ◽  
Robin D. Pingree
Keyword(s):  
High Resolution ◽  
Close Agreement ◽  
Emiliania Huxleyi ◽  
Scale Structure ◽  
Satellite Observations ◽  
Thematic Mapper ◽  
Fine Scale ◽  
Visible Band ◽  
First Time ◽  
Very High

The fine-scale structure of a bloom of the coccolithophorid Emiliania huxleyi has been mapped for the first time with an airborne thematic mapper (ATM) scanner (visible bands at 420–450 nm, 450–520 nm, 520–600 nm, 605–625 nm and 630–690 nm). The airborne results are in close agreement with simultaneous satellite observations from the visible band (580–680 nm) of the advanced very high resolution radiometer (AVHRR

High Resolution Stereography of Complementary Freeze-Fracture Replicas Reveals the Presence of Depressions Opposite Membrane Associated Particles of Split Membranes

1971 ◽  
Vol 29 ◽  
pp. 442-443
Author(s):  
Russell L. Steere
Keyword(s):  
High Resolution ◽  
Cardiac Muscle ◽  
Electron Micrographs ◽  
Chromic Acid ◽  
Freeze Fracture ◽  
Distilled Water ◽  
Fine Scale ◽  
Acid Cleaning ◽  
Cleaning Solution

Complementary replicas have revealed the fact that the two common faces observed in electron micrographs of freeze-fracture and freeze-etch specimens are complementary to each other and are thus the new faces of a split membrane rather than the original inner and outer surfaces (1, 2 and personal observations). The big question raised by published electron micrographs is why do we not see depressions in the complementary face opposite membrane-associated particles? Reports have appeared indicating that some depressions do appear but complementarity on such a fine scale has yet to be shown.Dog cardiac muscle was perfused with glutaraldehyde, washed in distilled water, then transferred to 30% glycerol (material furnished by Dr. Joaquim Sommer, Duke Univ., and VA Hospital, Durham, N.C.). Small strips were freeze-fractured in a Denton Vacuum DFE-2 Freeze-Etch Unit with complementary replica tooling. Replicas were cleaned in chromic acid cleaning solution, then washed in 4 changes of distilled water and mounted on opposite sides of the center wire of a Formvar-coated grid.

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