منابع مشابه
Iris2 : a Working Infrared Multi-object Spectrograph & Camera
IRIS2 is a near-infrared imager and spectrograph based on a HAWAII1 HgCdTe detector. It provides wide-field (7.7'×7.7') imaging capabilities at 0.4486 " /pixel sampling, long-slit spectroscopy at λ/Δλ≈2400 in each of the J, H and K passbands, and the ability to do multi-object spectroscopy in up to three masks. These multi-slit masks are laser cut, and have been manufactured for both traditiona...
متن کاملEngineering performance of IRIS2 infrared imaging camera and spectrograph
IRIS2, the infrared imager and spectrograph for the Cassegrain focus of the Anglo Australian Telescope, has been in service since October 2001. IRIS2 incorporated many novel features, including multiple cryogenic multislit masks, a dual chambered vacuum vessel (the smaller chamber used to reduce thermal cycle time required to change sets of multislit masks), encoded cryogenic wheel drives with ...
متن کاملOn directed designs with block size five
In a t-(v, k, λ) directed design the blocks are ordered k-tuples and every ordered t-tuple of distinct points occurs in exactly λ blocks (as a subsequence). We study t-(v, 5, 1) directed designs with t = 3 and t = 4. In particular, we construct the first known examples, and an infinite class, of 3-(v, 5, 1) directed designs, and the first known infinite class of 4-(v, 5, 1) directed designs.
متن کاملMOSFIRE: a multi-object near-infrared spectrograph and wide-field camera for the Keck Observatory
MOSFIRE, the multi-object spectrometer for infra-red exploration, is a near-IR (0.97-2.45 micron) spectrograph and imager for the Cassegrain focus of the Keck I telescope. The optical design provides imaging and multi-object spectroscopy over a field of view (FOV) of 6.14' x 6.14' with a resolving power of R~3,270 for a slit width of 0.7 arc seconds (2.9 pixels along dispersion). The detector i...
متن کاملThe Spectrograph
JILA Fellow John Hall will deliver the 2006 Richard C. Lord Lecture on May 2, on “Optical clocks, combs and coherence: defining and measuring optical frequency.” Born in 1934 in Denver, Hall is an alumnus of the Carnegie Institute of Technology, where he received B.S., M.S. and Ph.D. degrees. He conducted postdoctoral studies at the Department of Commerce’s National Bureau of Standards, now cal...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1972
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/157.4.403