Optical design of FRIDA, the integral-field spectrograph and imager for the AO system of the Gran Telescopio Canarias

2008 ◽  
Author(s):  
Salvador Cuevas ◽  
Stephen S. Eikenberry ◽  
Beatriz Sánchez ◽  
Oscar Chapa ◽  
Carlos Espejo ◽  
...  
Keyword(s):  
Optical Design ◽  
Integral Field Spectrograph ◽  
Integral Field

scholarly journals Design of pre-optics for laser guide star wavefront sensor for the ELT

2017 ◽  
Vol 6 (6) ◽  
Author(s):  
Eduard Muslimov ◽  
Kjetil Dohlen ◽  
Benoit Neichel ◽  
Emmanuel Hugot
Keyword(s):  
Optical Design ◽  
Laser Guide Star ◽  
Wavefront Sensors ◽  
Incoming Beam ◽  
Wavefront Error ◽  
Integral Field Spectrograph ◽  
Guide Star ◽  
Laser Guide ◽  
Light Integral ◽  
Integral Field

AbstractIn the present paper, we consider the optical design of a zoom system for the active refocusing in laser guide star wavefront sensors. The system is designed according to the specifications coming from the Extremely Large Telescope (ELT)-HARMONI instrument, the first-light, integral field spectrograph for the European (E)-ELT. The system must provide a refocusing of the laser guide as a function of telescope pointing and large decentring of the incoming beam. The system considers four moving lens groups, each of them being a doublet with one aspherical surface. The advantages and shortcomings of such a solution in terms of the component displacements and complexity of the surfaces are described in detail. It is shown that the system can provide the median value of the residual wavefront error of 13.8–94.3 nm and the maximum value <206 nm, while the exit pupil distortion is 0.26–0.36% for each of the telescope pointing directions.

scholarly journals GMTIFS: challenging optical design problems and their solutions for the GMT integral-field spectrograph

2016 ◽  
Author(s):  
John Hart ◽  
Gabe Bloxham ◽  
Robert Boz ◽  
Brady Espeland ◽  
Robert Sharp
Keyword(s):  
Optical Design ◽  
Design Problems ◽  
Integral Field Spectrograph ◽  
Integral Field

The first VisAO-fed integral field spectrograph: VisAO IFS

2010 ◽  
Author(s):  
Katherine B. Follette ◽  
Laird M. Close ◽  
Derek Kopon ◽  
Jared R. Males ◽  
Victor Gasho ◽  
...  
Keyword(s):  
Integral Field Spectrograph ◽  
Integral Field

scholarly journals The MURALES survey

2020 ◽  
Vol 645 ◽  
pp. A12
Author(s):  
B. Balmaverde ◽  
A. Capetti ◽  
A. Marconi ◽  
G. Venturi ◽  
M. Chiaberge ◽  
...  
Keyword(s):  
Emission Line ◽  
Large Scale ◽  
Line Emission ◽  
Emission Region ◽  
Gas Velocity ◽  
Ionized Gas ◽  
Large Scale Structures ◽  
Scale Structures ◽  
Integral Field Spectrograph ◽  
Integral Field

We present the final observations of a complete sample of 37 radio galaxies from the Third Cambridge Catalogue (3C) with redshift < 0.3 and declination < 20° obtained with the VLT/MUSE optical integral field spectrograph. These data were obtained as part of the MUse RAdio Loud Emission line Snapshot (MURALES) survey with the main goal of exploring the AGN feedback process in the most powerful radio sources. We present the data analysis and, for each source, the resulting emission line images and the 2D gas velocity field. Thanks to the unprecedented depth these observations reveal emission line regions (ELRs) extending several tens of kiloparsec in most objects. The gas velocity shows ordered rotation in 25 galaxies, but in several sources it is highly complex. We find that the 3C sources show a connection between radio morphology and emission line properties. In the ten FR I sources the line emission region is generally compact, only a few kpc in size; only in one case does it exceed the size of the host. Conversely, all but two of the FR II galaxies show large-scale structures of ionized gas. The median extent is 16 kpc with the maximum reaching a size of ∼80 kpc. There are no apparent differences in extent or strength between the ELR properties of the FR II sources of high and low gas excitation. We confirm that the previous optical identification of 3C 258 is incorrect: this radio source is likely associated with a quasi-stellar object at z ∼ 1.54.

scholarly journals The MAGNUM survey: a high-resolution study of the complex nuclear environment of local Seyfert galaxies

2019 ◽  
pp. 159-172
Author(s):  
M. Mingozzi ◽  
G. Venturi ◽  
F. Mannucci ◽  
A. Marconi ◽  
G. Cresci
Keyword(s):  
Seyfert Galaxies ◽  
Analysis Techniques ◽  
Central Regions ◽  
Galaxy Disk ◽  
Nuclear Environment ◽  
Physical Effects ◽  
Integral Field Spectrograph ◽  
Inner Parts ◽  
Integral Field ◽  
Extract Information

The central regions of Seyfert galaxies, comprising broad and narrow line regions and the inner parts of galaxy disk and bulge, is characterized by a complex interplay among many physical effects. Specifically, it is shaped by the influence of the central black hole, producing ionization by an hard continuum and gas outflows. The integral-field spectrograph MUSE at the ESO VLT allows to carry out a detailed study of these regions to obtain their ionization, dynamical, and metallicity properties. Here we present some highlights of the MAGNUM survey which is designed to study the central regions of a sample of nearby (D > 500 pc) Seyfert galaxies. We describe the rationale of the survey, the data analysis techniques used to extract information on ionization and dynamics, and the results for one galaxy, Centaurus A.

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