Abstract
The AAO is building an optical high resolution multi-object spectrograph for the AAT for Galactic Archaeology. The instrument has undergone significant design revision over that presented at the 2008 Marseilles SPIE meeting. The current design is a 4-channel VPH-grating based spectrograph providing a nominal spectral resolving power of 28,000 and a high-resolution mode of 45,000 with the use of a slit mask. The total spectral coverage is about 1000 Angstroms for up to 392 simultaneous targets within the 2 degree field of view. Major challenges in the design include the mechanical stability, grating and dichroic efficiencies, and fibre slit relay implementation. An overview of the current design and discussion of these challenges is presented.
Original language | English |
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Title of host publication | Ground-Based and Airborne Instrumentation for Astronomy III |
Editors | Ian S. McLean, Suzanne K. Ramsay, Hideki Takami |
Place of Publication | Bellingham, WA |
Publisher | SPIE |
Pages | 1-19 |
Number of pages | 19 |
Volume | 7735 |
Edition | PART 1 |
ISBN (Print) | 9780819482259 |
DOIs | |
Publication status | Published - Jul 2010 |
Externally published | Yes |
Event | Ground-Based and Airborne Instrumentation for Astronomy III - San Diego, CA, United States Duration: 27 Jun 2010 → 2 Jul 2010 |
Other
Other | Ground-Based and Airborne Instrumentation for Astronomy III |
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Country/Territory | United States |
City | San Diego, CA |
Period | 27/06/10 → 2/07/10 |
Keywords
- AAT
- fiber
- galactic archeology
- high resolution
- multi-object
- spectrograph
- volume phase holographic grating