palomar: cosmic web imager
DESCRIPTION
Palomar: Cosmic Web Imager. Who are CWI? Khanh Bui (Structure design) Daphne Chang (Opto-mechanical lead, GRA) Matt Matuszewski (Grating, articulation unit, GRA) Chris Martin (PI) Anna Moore (System Lead) Patrick Morrissey (Detector) Shahin Rahman (Software, GRA) What is CWI? - PowerPoint PPT PresentationTRANSCRIPT
All-hands meeting 31st Jan 2007 Anna Moore
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Palomar: Cosmic Web Imager
Who are CWI?Khanh Bui (Structure design)Daphne Chang (Opto-mechanical lead, GRA)Matt Matuszewski (Grating, articulation unit, GRA)Chris Martin (PI)Anna Moore (System Lead)Patrick Morrissey (Detector)Shahin Rahman (Software, GRA)
What is CWI?Optical spectrograph for 200” Hale telescope designed specifically for high resolution spectroscopy of low-surface-brightness extended emission with exquisite sky background subtractionBased on slicer-IFU, 50” FoV, R~5000
Science goal:Science goal is to directly detect faint cosmic web and circum-galactic medium emission at high redshiftsFirst light late 2008
CWI shown mounted to the Cassegrain station of the 200” Hale telescope, without enclosure
All-hands meeting 31st Jan 2007 Anna Moore
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Palomar: Cosmic Web Imager
IFU
Collimator
VPH grating
Camera and dewar
The camera and dewar assembly must rotate about the center of the
grating
Side view/zenith pointing
All-hands meeting 31st Jan 2007 Anna Moore
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Infrared Imaging Spectrograph(IRIS) Concept Design
James Larkin PI (UCLA)
Anna Moore co-PI (Caltech)
First light instrument for TMT (2016?)
~1 year CODR study with review in Feb 2009
~450k study, 1/3rd to COO
0.8-2.5mm, imager and IFU R<4000
Imager: FoV 10” goal
IFU(lenslet): 4/9 mas/pixel; 2” FoV
IFU(slicer): 22/50 mas/pixel
Spectrograph offers high strehl lenslet and high efficiency slicer
Large part of CODR is to combine lenslet and slicer optics efficiently
All-hands meeting 31st Jan 2007 Anna Moore
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2.25m
IRIS Envelope Dimensions
The generic instrument envelope is a 2m dia. cylinder extending 3.75m axially from the interface plane– A “snout” portion protrudes
0.5m into NFIRAOS
– Maximum total instrument length = 4.25m
The instrument centre of mass is required to lie on axis, 2.25m from the interface plane
4.25m
SNOUT 0.5m
ROTATOR BEARING e.g.
ROLLIX 02-1415-00
C of M (5T)
INTERFACE PLANE