scholarly journals High-resolution observations of prominence plume formation with the new vacuum solar telescope

2021 ◽  
Vol 21 (9) ◽  
pp. 222
Author(s):  
Jian-Chao Xue ◽  
Jean-Claude Vial ◽  
Yang Su ◽  
Hui Li ◽  
Zhi Xu ◽  
...  
Keyword(s):  
High Resolution ◽  
Solar Telescope

scholarly journals The Indian National Large Solar Telescope (NLST)

2009 ◽  
Vol 5 (S264) ◽  
pp. 499-504 ◽  
Author(s):  
S. S. Hasan
Keyword(s):  
Water Vapor ◽  
High Resolution ◽  
Adaptive Optics ◽  
State Of The Art ◽  
Indian Institute ◽  
Solar Telescope ◽  
Concept Design ◽  
Night Time ◽  
Innovative Design ◽  
Instrumental Polarization

AbstractThe Indian National Large Solar Telescope (NLST) will be a state-of-the-art 2-m class telescope for carrying out high resolution studies of the solar atmosphere. Sites in the Himalayan region at altitudes greater than 4000-m that have extremely low water vapor content and are unaffected by monsoons are under evaluation. This project is led by the Indian Institute of Astrophysics and has national and international partners.NLST is an on-axis alt-azimuth Gregorian multi-purpose open telescope with the provision of carrying out night time stellar observations using a spectrograph. The telescope utilizes an innovative design with low number of reflections to achieve a high throughput and low instrumental polarization. High order adaptive optics is integrated into the design that works with a modest Fried's parameter of 7-cm to give diffraction limited performance. The telescope will be equipped with a suite of post-focus instruments including a high resolution spectrograph and a polarimeter. A detailed concept design of the telescope is presently being finalized and fabrication is expected to begin in 2010 with first light in 2014.

scholarly journals Active Region Evolution Through Coordinated Observations

1993 ◽  
Vol 141 ◽  
pp. 63-66 ◽  
Author(s):  
N. Mein ◽  
P. Mein ◽  
B. Schmieder ◽  
O. Engvold ◽  
R. Molowny ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Resolution ◽  
Active Region ◽  
White Light ◽  
Imaging Spectroscopy ◽  
Solar Telescope ◽  
La Palma ◽  
Rocket Experiment ◽  
Region Evolution

On May 7, 1991, several ground-based instruments have been coordinated to observe AR 6615 (S10-W26), before and during the flight of the SERTS rocket experiment (Schmieder et al.,1992):– Imaging spectroscopy (MSDP) at the VTT telescope of Tenerife (collaboration Paris-Meudon and KIS Freiburg). Hα and NaD1 are observed simultaneously in 2D fields, with 9 and 11 wavelengths respectively (Mein, 1991).– High resolution “white light” pictures (around 4686Å) at the Swedish Vacuum Solar Telescope (SVST) of La Palma (Scharmer et al., 1985).We present below some data from both instruments. Magnetic field maps are also available from the Huairou magnetograph (China), and from the GCT telescope (KIS/Tenerife).

scholarly journals The EST project

2010 ◽  
Vol 6 (S274) ◽  
pp. 310-313
Author(s):  
Francesca Zuccarello ◽  
Keyword(s):  
Magnetic Field ◽  
High Resolution ◽  
Conceptual Design ◽  
Optical Design ◽  
High Resolution Imaging ◽  
Solar Telescope ◽  
Magnetic Field Generation ◽  
Medium Term ◽  
Design Study ◽  
Resolution Imaging

AbstractEST European Solar Telescope is a pan-european project, presently in its Conceptual Design Study financed by the European Commission in the framework of FP7, involving 29 partners, from 14 different countries. The EST project is aimed at the realization of a 4-m class telescope, characterized by an optical design and a set of instruments optimized for extremely high resolution imaging and spectropolarimetric observations from near UV to NIR. EST will be four times larger than any existing high resolution solar telescope and it is designated with the highest priority among the ground-based, medium term (2016-2020) new projects in the ASTRONET Roadmap (Panel C). The EST instruments will measure fundamental astrophysical processes at their intrinsic scales in the Sun's atmosphere to establish the mechanism of magnetic field generation and removal, and of energy transfer from the surface to the upper solar atmosphere and eventually to the whole heliosphere. The conceptual Design Study started on February 2008 and will finish during 2011. EST will be operational at the same time as major ESA and NASA space missions aimed at studying solar activity.

scholarly journals Scientific Programmes with India's National Large Solar Telescope and their contribution to Prominence Research

2013 ◽  
Vol 8 (S300) ◽  
pp. 355-361
Author(s):  
S. S. Hasan
Keyword(s):  
High Resolution ◽  
Adaptive Optics ◽  
High Spatial Resolution ◽  
Optical Design ◽  
Primary Objective ◽  
Spectral Lines ◽  
Solar Telescope ◽  
Optical Elements ◽  
Scientific Questions ◽  
Adaptive Optics System

AbstractThe primary objective of the 2-m National Large Solar Telescope (NLST) is to study the solar atmosphere with high spatial and spectral resolution. With an innovative optical design, NLST is an on-axis Gregorian telescope with a low number of optical elements and a high throughput. In addition, it is equipped with a high order adaptive optics system to produce close to diffraction limited performance.NLST will address a large number of scientific questions with a focus on high resolution observations. With NLST, high spatial resolution observations of prominences will be possible in multiple spectral lines. Studies of magnetic fields, filament eruptions as a whole, and the dynamics of filaments on fine scales using high resolution observations will be some of the major areas of focus.

scholarly journals Witnessing magnetic twist with high-resolution observation from the 1.6-m New Solar Telescope

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Haimin Wang ◽  
Wenda Cao ◽  
Chang Liu ◽  
Yan Xu ◽  
Rui Liu ◽  
...  
Keyword(s):  
High Resolution ◽  
Solar Telescope ◽  
Resolution Observation ◽  
High Resolution Observation

A HIGH RESOLUTION INTEGRAL FIELD SPECTROGRAPH FOR THE EUROPEAN SOLAR TELESCOPE

2013 ◽  
Vol 02 (01) ◽  
pp. 1350007 ◽  
Author(s):  
A. CALCINES ◽  
R. L. LÓPEZ ◽  
M. COLLADOS
Keyword(s):  
High Resolution ◽  
Near Infrared ◽  
Optical Quality ◽  
Solar Chromosphere ◽  
Solar Telescope ◽  
Infrared Wavelength ◽  
Multi Wavelength ◽  
Integral Field Spectrograph ◽  
Field Unit ◽  
Integral Field

This paper presents the proposal of a high resolution, integral field spectrograph that is currently being designed for the 4-meter aperture European Solar Telescope that will be located in the Canary Islands. This instrument is optimized to study the solar chromosphere and photosphere to allow the investigation of several phenomena concentrated within these two layers. It will be able to observe simultaneously a bidimensional field of view of 80 arcsec2 that is reorganized, using an integral field unit, into 8 long slits of 200 arcsec length by 0.05 arcsec width. It will have the capability to observe different layers of the Sun at the same time due to its multi-wavelength capability that allows the observation of 5 visible and 3 near-infrared wavelength intervals from 3900 to 23,000 Å, with a spectral resolution of about 300,000. The designed instrument is telecentric and presents an optical quality limited by diffraction.

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