The prime focus imaging spectrograph for the Southern African Large Telescope: structural and mechanical design and commissioning

2006 ◽  
Author(s):  
Michael P. Smith ◽  
Kenneth H. Nordsieck ◽  
Eric B. Burgh ◽  
Jeffrey W. Percival ◽  
T. B. Williams ◽  
...  
Keyword(s):  
Mechanical Design ◽  
Large Telescope ◽  
Imaging Spectrograph

InfraRed Imaging Spectrograph (IRIS) on TMT: OIWFS opto-mechanical design update

2020 ◽  
Author(s):  
Jenny Atwood ◽  
Brian Hoff ◽  
David Andersen ◽  
Jeffrey Crane ◽  
Jennifer S. Dunn
Keyword(s):  
Infrared Imaging ◽  
Mechanical Design ◽  
Imaging Spectrograph

Prime Focus Imaging Spectrograph for the Southern African Large Telescope: optical design

2003 ◽  
Author(s):  
Eric B. Burgh ◽  
Kenneth H. Nordsieck ◽  
Henry A. Kobulnicky ◽  
Ted B. Williams ◽  
Darragh O'Donoghue ◽  
...  
Keyword(s):  
Optical Design ◽  
Large Telescope ◽  
Imaging Spectrograph

scholarly journals Prime focus imaging spectrograph for the Southern African large telescope: operational modes

2003 ◽  
Author(s):  
Henry A. Kobulnicky ◽  
Kenneth H. Nordsieck ◽  
Eric B. Burgh ◽  
Michael P. Smith ◽  
Jeffrey W. Percival ◽  
...  
Keyword(s):  
Large Telescope ◽  
Operational Modes ◽  
Imaging Spectrograph

scholarly journals The Far Ultraviolet Imaging Spectrograph on Spartan-281

1990 ◽  
Vol 139 ◽  
pp. 459-460
Author(s):  
George R. Carruthers ◽  
Harry M. Heckathorn ◽  
John C. Raymond ◽  
Reginald J. Dufour ◽  
Adolf N. Witt ◽  
...  
Keyword(s):  
Spectral Range ◽  
Angular Resolution ◽  
Hubble Space Telescope ◽  
Compact Objects ◽  
High Angular Resolution ◽  
Large Telescope ◽  
International Ultraviolet Explorer ◽  
Far Ultraviolet ◽  
Compact Sources ◽  
Imaging Spectrograph

The study of diffuse celestial sources in the ground-inaccessible ultraviolet spectral range is less advanced than UV studies of point and compact sources. The main reason is that the characteristics of instrumentation optimized for the two types of objects are quite different. Studies of diffuse objects are best made with fast focal ratio optics with wide fields of view, whereas studies of point and compact objects are best made with large telescope aperture and high angular resolution. As a result, most space ultraviolet instruments to date (such as the International Ultraviolet Explorer and the forthcoming Hubble Space Telescope) are not well suited to the study of faint, extended diffuse objects in the ultraviolet.

scholarly journals The Infrared Imaging Spectrograph (IRIS) for TMT: multi-tiered wavefront measurements and novel mechanical design

2016 ◽  
Author(s):  
Jennifer Dunn ◽  
David Andersen ◽  
Edward Chapin ◽  
Vlad Reshetov ◽  
Ramunas Wierzbicki ◽  
...  
Keyword(s):  
Infrared Imaging ◽  
Mechanical Design ◽  
Imaging Spectrograph

B. Large Telescope Engineering Operations

1966 ◽  
Vol 27 ◽  
pp. 200-209
Keyword(s):  
Large Telescope ◽  
Advance Planning

Whitford : The next phase of the program has to do with advance planning of the instruments themselves, to make the logistics of operation simple and foolproof. I call first on Mr Rule to speak on ‘thinking ahead’.

The new CM-Series TEMs: integration of a five-axis motorized, fully computer-controlled goniometer

1993 ◽  
Vol 51 ◽  
pp. 258-259
Author(s):  
Marc J.C. de Jong ◽  
P. Emile S.J. Asselbergs ◽  
Max T. Otten
Keyword(s):  
Mechanical Design ◽  
Computer Control ◽  
Objective Lens ◽  
Access Port ◽  
Vibration Stability ◽  
Transmission Electron ◽  
Computer Controlled ◽  
High Degree ◽  
Five Axis ◽  
Five Axes

A new step forward in Transmission Electron Microscopy has been made with the introduction of the CompuStage on the CM-series TEMs: CM120, CM200, CM200 FEG and CM300. This new goniometer has motorization on five axes (X, Y, Z, α, β), all under full computer control by a dedicated microprocessor that is in communication with the main CM processor. Positions on all five axes are read out directly - not via a system counting motor revolutions - thereby providing a high degree of accuracy. The CompuStage enters the octagonal block around the specimen through a single port, allowing the specimen stage to float freely in the vacuum between the objective-lens pole pieces, thereby improving vibration stability and freeing up one access port. Improvements in the mechanical design ensure higher stability with regard to vibration and drift. During stage movement the holder O-ring no longer slides, providing higher drift stability and positioning accuracy as well as better vacuum.

Sign in / Sign up

Export Citation Format

Share Document