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ESA Space Science Talks March 2009. Dave Clements and Matt Griffin: A profile of the Herschel infrared observatory's SPIRE – Far-IR Photometer and Spectrometer.
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The Herschel SPIRE Instrument
Dave Clements, Imperial College London
Matt Griffin, SPIRE PI, Cardiff University
Schloss Braunschardt
19/3/09
The SPIRE Instrument | Dave Clements | Herschel | Pag. 2
SPIRE – Far-IR Photometer and Spectrometer
SPIRE consists of two sub-instruments
A three colour far-IR Camera
-Simultaneous images at 250, 350, 500 microns:
first time these wavelengths have been explored
from space
- Also parallel mode with PACS
An imaging spectrometer
-Wavelength range 200-670 microns: first
spectral coverage from sapce
-Simultaneous coverage of full wavelength range
For both sub-instruments detectors at 0.3K,
optics and mechanisms at 2K and 5K
> SPIRE undergoing lab testing
The SPIRE Instrument | Dave Clements | Herschel | Pag. 2
From cosmology to planet formation
What the Photometer Will do?
Cosmology
Find the missing 50% of energy generation
in the universe
-Galaxies evolve very differently in optical
and far-IR, with many more far-IR bright
objects early on, hiding 50% of energy
generation. SPIRE will find and study them.
Star and Planet Formation
Star and planet formation is inherently dusty
phenomenon
-SPIRE will find and determine properties of
protostars and planetary debris disks > SPIRE’s scientific targets
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SPIRE/PACS
The SPIRE Instrument | Dave Clements | Herschel | Pag. 2
From cosmology to planet formation
SPIRE Spectrometer: Exploring molecules in
space
Rich and largely unexplored range of
spectral lines in far-IR/submm
-SPIRE Spectrometer will provide our first
chance to study this region
-Look for water and CO lines
-Look for complex organic molecules
-Examine the mineralogy of interplanetary
and intersteller dust
-Survey instrument so not aimed at
individual known lines so discovery potential
is huge
> SPIRE Spectrometer targets
Handy fact:
The SPIRE Photometer can detect power of a 100W lightbulb a million km away - or a low energy bulb (20W) on the Moon.
Herschel Blog:
http://herschelmission.wordpress.com/
THANK YOU
Dave Clementsd.clements@imperial.ac.uk
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