multi-object spectrograph
(multi-object spectrometer)
(device to record the spectrum of multiple targets simultaneously)
A multi-object spectrograph is a spectrograph designed to
collect spectrographic data from multiple targets simultaneously.
A spectrograph open to the image (i.e., no restricting slit,
a slitless spectrograph)
can do this (producing a little "rainbow" for each imaged star),
but the term is generally used for newer variations.
Generally, it uses a method to bring in
light from known locations
within the telescope's focal plane image, and requires preparation
in terms of adjusting the instrument for these specific locations.
This has been done by using a mask with multiple slits rather than
a single slit.
It has also been done using what amounts to an imaging spectrograph
or integral field spectrograph but designed so the "pixels" can
be placed so as to gather data from specific target locations rather
than being spread evenly over a field. An integral field unit
of the "fiber" type might have the fibers rearranged to certain
points in the focal plane image.
Telescopes/instruments using this:
- ESO VLT's VIMOS (Visible multi-object spectrograph)
- Subaru's FMOS (Fibre multi-object spectrograph)
The term multi-object spectrography indicates observation with
such instruments.
(color,EMR,instrument type,spectrography)
Further reading:
http://en.wikipedia.org/wiki/Fibre_multi-object_spectrograph
http://en.wikipedia.org/wiki/Visible_Multi_Object_Spectrograph
http://en.wikipedia.org/wiki/Slitless_spectroscopy
https://ui.adsabs.harvard.edu/abs/2016SPIE.9908E..1SC/abstract
Referenced by pages:
BigBOSS
Víctor M. Blanco Telescope
Dark Energy Survey (DES)
Dark Energy Spectroscopic Instrument (DESI)
European Extremely Large Telescope (E-ELT)
ESO Nearby Abell Cluster Survey (ENACS)
European Southern Observatory Very Large Telescope (ESO VLT)
fiber positioner
Gaia
GAMA
Gran Telescopio Canarias (GTC)
Hubble Space Telescope (HST)
Keck Observatory
KMOS
Las Campanas Redshift Survey (LCRS)
Magellan Telescopes
Multi-object Optical and Near-IR Spectrograph (MOONS)
PRIMUS
spectroscopy
Subaru Telescope
TAIPAN
Thirty Meter Telescope (TMT)
2dF-SDSS LRG and QSO survey (2SLAQ)
UK Schmidt Telescope (UKST)
VIMOS-VLT Deep Survey (VVDS)
WEAVE
James Webb Space Telescope (JWST)
Roman Space Telescope (RST)
Wide-field Multi-object Spectrograph (WFMOS)
William Herschel Telescope (WHT)
WIYN 3.5m Telescope
Index